Commit Graph

890630 Commits

Author SHA1 Message Date
Johan Hovold
4d5ef53f75 USB: serial: ch341: handle unbound port at reset_resume
Check for NULL port data in reset_resume() to avoid dereferencing a NULL
pointer in case the port device isn't bound to a driver (e.g. after a
failed control request at port probe).

Fixes: 1ded7ea47b ("USB: ch341 serial: fix port number changed after resume")
Cc: stable <stable@vger.kernel.org>     # 2.6.30
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2020-01-17 16:22:45 +01:00
Josef Bacik
b35cf1f0bf btrfs: check rw_devices, not num_devices for balance
The fstest btrfs/154 reports

  [ 8675.381709] BTRFS: Transaction aborted (error -28)
  [ 8675.383302] WARNING: CPU: 1 PID: 31900 at fs/btrfs/block-group.c:2038 btrfs_create_pending_block_groups+0x1e0/0x1f0 [btrfs]
  [ 8675.390925] CPU: 1 PID: 31900 Comm: btrfs Not tainted 5.5.0-rc6-default+ #935
  [ 8675.392780] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba527-rebuilt.opensuse.org 04/01/2014
  [ 8675.395452] RIP: 0010:btrfs_create_pending_block_groups+0x1e0/0x1f0 [btrfs]
  [ 8675.402672] RSP: 0018:ffffb2090888fb00 EFLAGS: 00010286
  [ 8675.404413] RAX: 0000000000000000 RBX: ffff92026dfa91c8 RCX: 0000000000000001
  [ 8675.406609] RDX: 0000000000000000 RSI: ffffffff8e100899 RDI: ffffffff8e100971
  [ 8675.408775] RBP: ffff920247c61660 R08: 0000000000000000 R09: 0000000000000000
  [ 8675.410978] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffe4
  [ 8675.412647] R13: ffff92026db74000 R14: ffff920247c616b8 R15: ffff92026dfbc000
  [ 8675.413994] FS:  00007fd5e57248c0(0000) GS:ffff92027d800000(0000) knlGS:0000000000000000
  [ 8675.416146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [ 8675.417833] CR2: 0000564aa51682d8 CR3: 000000006dcbc004 CR4: 0000000000160ee0
  [ 8675.419801] Call Trace:
  [ 8675.420742]  btrfs_start_dirty_block_groups+0x355/0x480 [btrfs]
  [ 8675.422600]  btrfs_commit_transaction+0xc8/0xaf0 [btrfs]
  [ 8675.424335]  reset_balance_state+0x14a/0x190 [btrfs]
  [ 8675.425824]  btrfs_balance.cold+0xe7/0x154 [btrfs]
  [ 8675.427313]  ? kmem_cache_alloc_trace+0x235/0x2c0
  [ 8675.428663]  btrfs_ioctl_balance+0x298/0x350 [btrfs]
  [ 8675.430285]  btrfs_ioctl+0x466/0x2550 [btrfs]
  [ 8675.431788]  ? mem_cgroup_charge_statistics+0x51/0xf0
  [ 8675.433487]  ? mem_cgroup_commit_charge+0x56/0x400
  [ 8675.435122]  ? do_raw_spin_unlock+0x4b/0xc0
  [ 8675.436618]  ? _raw_spin_unlock+0x1f/0x30
  [ 8675.438093]  ? __handle_mm_fault+0x499/0x740
  [ 8675.439619]  ? do_vfs_ioctl+0x56e/0x770
  [ 8675.441034]  do_vfs_ioctl+0x56e/0x770
  [ 8675.442411]  ksys_ioctl+0x3a/0x70
  [ 8675.443718]  ? trace_hardirqs_off_thunk+0x1a/0x1c
  [ 8675.445333]  __x64_sys_ioctl+0x16/0x20
  [ 8675.446705]  do_syscall_64+0x50/0x210
  [ 8675.448059]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
  [ 8675.479187] BTRFS: error (device vdb) in btrfs_create_pending_block_groups:2038: errno=-28 No space left

We now use btrfs_can_overcommit() to see if we can flip a block group
read only.  Before this would fail because we weren't taking into
account the usable un-allocated space for allocating chunks.  With my
patches we were allowed to do the balance, which is technically correct.

The test is trying to start balance on degraded mount.  So now we're
trying to allocate a chunk and cannot because we want to allocate a
RAID1 chunk, but there's only 1 device that's available for usage.  This
results in an ENOSPC.

But we shouldn't even be making it this far, we don't have enough
devices to restripe.  The problem is we're using btrfs_num_devices(),
that also includes missing devices. That's not actually what we want, we
need to use rw_devices.

The chunk_mutex is not needed here, rw_devices changes only in device
add, remove or replace, all are excluded by EXCL_OP mechanism.

Fixes: e4d8ec0f65 ("Btrfs: implement online profile changing")
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add stacktrace, update changelog, drop chunk_mutex ]
Signed-off-by: David Sterba <dsterba@suse.com>
2020-01-17 15:40:54 +01:00
Filipe Manana
5afe6ce748 Btrfs: always copy scrub arguments back to user space
If scrub returns an error we are not copying back the scrub arguments
structure to user space. This prevents user space to know how much
progress scrub has done if an error happened - this includes -ECANCELED
which is returned when users ask for scrub to stop. A particular use
case, which is used in btrfs-progs, is to resume scrub after it is
canceled, in that case it relies on checking the progress from the scrub
arguments structure and then use that progress in a call to resume
scrub.

So fix this by always copying the scrub arguments structure to user
space, overwriting the value returned to user space with -EFAULT only if
copying the structure failed to let user space know that either that
copying did not happen, and therefore the structure is stale, or it
happened partially and the structure is probably not valid and corrupt
due to the partial copy.

Reported-by: Graham Cobb <g.btrfs@cobb.uk.net>
Link: https://lore.kernel.org/linux-btrfs/d0a97688-78be-08de-ca7d-bcb4c7fb397e@cobb.uk.net/
Fixes: 06fe39ab15 ("Btrfs: do not overwrite scrub error with fault error in scrub ioctl")
CC: stable@vger.kernel.org # 5.1+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Tested-by: Graham Cobb <g.btrfs@cobb.uk.net>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-01-17 15:28:52 +01:00
Linus Torvalds
13b2668d6f GPIO fixes for the v5.5 series:
This reverts the GPIOLIB_IRQCHIP in the ThunderX driver.
 ThunderX is a piece of Arm-based server chip. I converted the driver to
 hierarchical gpiochip without access to real silicon and failed miserably
 since I didn't take MSI's into account.
 
 Kevin Hao helpfully stepped in and fixed it properly, let's revert it for
 v5.5 and put the proper conversion into v5.6.
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Merge tag 'gpio-v5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "This reverts the GPIOLIB_IRQCHIP in the ThunderX driver.

  ThunderX is a piece of Arm-based server chip. I converted the driver
  to hierarchical gpiochip without access to real silicon and failed
  miserably since I didn't take MSI's into account.

  Kevin Hao helpfully stepped in and fixed it properly, let's revert it
  for v5.5 and put the proper conversion into v5.6"

* tag 'gpio-v5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  Revert "gpio: thunderx: Switch to GPIOLIB_IRQCHIP"
2020-01-17 06:03:11 -08:00
Linus Torvalds
5ffdff81cf block-5.5-2020-01-16
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Merge tag 'block-5.5-2020-01-16' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Three fixes that should go into this release:

   - The 32-bit segment size fix that I mentioned last week (Ming)

   - Use uint for the block size (Mikulas)

   - A null_blk zone write handling fix (Damien)"

* tag 'block-5.5-2020-01-16' of git://git.kernel.dk/linux-block:
  block: fix an integer overflow in logical block size
  null_blk: Fix zone write handling
  block: fix get_max_segment_size() overflow on 32bit arch
2020-01-17 05:54:18 -08:00
Florian Fainelli
5a9ef19454 net: systemport: Fixed queue mapping in internal ring map
We would not be transmitting using the correct SYSTEMPORT transmit queue
during ndo_select_queue() which looks up the internal TX ring map
because while establishing the mapping we would be off by 4, so for
instance, when we populate switch port mappings we would be doing:

switch port 0, queue 0 -> ring index #0
switch port 0, queue 1 -> ring index #1
...
switch port 0, queue 3 -> ring index #3
switch port 1, queue 0 -> ring index #8 (4 + 4 * 1)
...

instead of using ring index #4. This would cause our ndo_select_queue()
to use the fallback queue mechanism which would pick up an incorrect
ring for that switch port. Fix this by using the correct switch queue
number instead of SYSTEMPORT queue number.

Fixes: 25c4407046 ("net: systemport: Simplify queue mapping logic")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 13:31:14 +01:00
Florian Fainelli
8f1880cbe8 net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec
With the implementation of the system reset controller we lost a setting
that is currently applied by the bootloader and which configures the IMP
port for 2Gb/sec, the default is 1Gb/sec. This is needed given the
number of ports and applications we expect to run so bring back that
setting.

Fixes: 01b0ac07589e ("net: dsa: bcm_sf2: Add support for optional reset controller line")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 13:26:27 +01:00
Vladimir Oltean
27afe0d34e net: dsa: sja1105: Don't error out on disabled ports with no phy-mode
The sja1105_parse_ports_node function was tested only on device trees
where all ports were enabled. Fix this check so that the driver
continues to probe only with the ports where status is not "disabled",
as expected.

Fixes: 8aa9ebccae ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 13:22:12 +01:00
Michael Grzeschik
86ffe920e6 net: phy: dp83867: Set FORCE_LINK_GOOD to default after reset
According to the Datasheet this bit should be 0 (Normal operation) in
default. With the FORCE_LINK_GOOD bit set, it is not possible to get a
link. This patch sets FORCE_LINK_GOOD to the default value after
resetting the phy.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 11:36:18 +01:00
Kan Liang
2167f1625c perf/x86/intel/uncore: Remove PCIe3 unit for SNR
The PCIe Root Port driver for CPU Complex PCIe Root Ports are not
loaded on SNR.

The device ID for SNR PCIe3 unit is used by both uncore driver and the
PCIe Root Port driver. If uncore driver is loaded, the PCIe Root Port
driver never be probed.

Remove the PCIe3 unit for SNR for now. The support for PCIe3 unit will
be added later separately.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20200116200210.18937-2-kan.liang@linux.intel.com
2020-01-17 11:33:38 +01:00
Kan Liang
fa694ae532 perf/x86/intel/uncore: Fix missing marker for snr_uncore_imc_freerunning_events
An Oops during the boot is found on some SNR machines.  It turns out
this is because the snr_uncore_imc_freerunning_events[] array was
missing an end-marker.

Fixes: ee49532b38 ("perf/x86/intel/uncore: Add IMC uncore support for Snow Ridge")
Reported-by: Like Xu <like.xu@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Like Xu <like.xu@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20200116200210.18937-1-kan.liang@linux.intel.com
2020-01-17 11:33:28 +01:00
Kan Liang
e743830451 perf/x86/intel/uncore: Add PCI ID of IMC for Xeon E3 V5 Family
The IMC uncore support is missed for E3-1585 v5 CPU.

Intel Xeon E3 V5 Family has Sky Lake CPU.
Add the PCI ID of IMC for Intel Xeon E3 V5 Family.

Reported-by: Rosales-fernandez, Carlos <carlos.rosales-fernandez@intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Rosales-fernandez, Carlos <carlos.rosales-fernandez@intel.com>
Link: https://lkml.kernel.org/r/1578687311-158748-1-git-send-email-kan.liang@linux.intel.com
2020-01-17 11:33:18 +01:00
Mark Rutland
da9ec3d3dd perf: Correctly handle failed perf_get_aux_event()
Vince reports a worrying issue:

| so I was tracking down some odd behavior in the perf_fuzzer which turns
| out to be because perf_even_open() sometimes returns 0 (indicating a file
| descriptor of 0) even though as far as I can tell stdin is still open.

... and further the cause:

| error is triggered if aux_sample_size has non-zero value.
|
| seems to be this line in kernel/events/core.c:
|
| if (perf_need_aux_event(event) && !perf_get_aux_event(event, group_leader))
|                goto err_locked;
|
| (note, err is never set)

This seems to be a thinko in commit:

  ab43762ef0 ("perf: Allow normal events to output AUX data")

... and we should probably return -EINVAL here, as this should only
happen when the new event is mis-configured or does not have a
compatible aux_event group leader.

Fixes: ab43762ef0 ("perf: Allow normal events to output AUX data")
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Tested-by: Vince Weaver <vincent.weaver@maine.edu>
2020-01-17 11:32:44 +01:00
Yonglong Liu
49edd6a2c4 net: hns: fix soft lockup when there is not enough memory
When there is not enough memory and napi_alloc_skb() return NULL,
the HNS driver will print error message, and than try again, if
the memory is not enough for a while, huge error message and the
retry operation will cause soft lockup.

When napi_alloc_skb() return NULL because of no memory, we can
get a warn_alloc() call trace, so this patch deletes the error
message. We already use polling mode to handle irq, but the
retry operation will render the polling weight inactive, this
patch just return budget when the rx is not completed to avoid
dead loop.

Fixes: 36eedfde1a ("net: hns: Optimize hns_nic_common_poll for better performance")
Fixes: b5996f11ea ("net: add Hisilicon Network Subsystem basic ethernet support")
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 11:19:12 +01:00
Johan Hovold
fdb838efa3 USB: serial: suppress driver bind attributes
USB-serial drivers must not be unbound from their ports before the
corresponding USB driver is unbound from the parent interface so
suppress the bind and unbind attributes.

Unbinding a serial driver while it's port is open is a sure way to
trigger a crash as any driver state is released on unbind while port
hangup is handled on the parent USB interface level. Drivers for
multiport devices where ports share a resource such as an interrupt
endpoint also generally cannot handle individual ports going away.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2020-01-17 11:11:26 +01:00
Cong Wang
53d374979e net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key()
syzbot reported some bogus lockdep warnings, for example bad unlock
balance in sch_direct_xmit(). They are due to a race condition between
slow path and fast path, that is qdisc_xmit_lock_key gets re-registered
in netdev_update_lockdep_key() on slow path, while we could still
acquire the queue->_xmit_lock on fast path in this small window:

CPU A						CPU B
						__netif_tx_lock();
lockdep_unregister_key(qdisc_xmit_lock_key);
						__netif_tx_unlock();
lockdep_register_key(qdisc_xmit_lock_key);

In fact, unlike the addr_list_lock which has to be reordered when
the master/slave device relationship changes, queue->_xmit_lock is
only acquired on fast path and only when NETIF_F_LLTX is not set,
so there is likely no nested locking for it.

Therefore, we can just get rid of re-registration of
qdisc_xmit_lock_key.

Reported-by: syzbot+4ec99438ed7450da6272@syzkaller.appspotmail.com
Fixes: ab92d68fc2 ("net: core: add generic lockdep keys")
Cc: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 11:02:44 +01:00
Eric Dumazet
44c23d7159 net/sched: act_ife: initalize ife->metalist earlier
It seems better to init ife->metalist earlier in tcf_ife_init()
to avoid the following crash :

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10483 Comm: syz-executor216 Not tainted 5.5.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:_tcf_ife_cleanup net/sched/act_ife.c:412 [inline]
RIP: 0010:tcf_ife_cleanup+0x6e/0x400 net/sched/act_ife.c:431
Code: 48 c1 ea 03 80 3c 02 00 0f 85 94 03 00 00 49 8b bd f8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 67 e8 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 03 00 00 48 bb 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90001dc6d00 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffffff864619c0 RCX: ffffffff815bfa09
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffffc90001dc6d50 R08: 0000000000000004 R09: fffff520003b8d8e
R10: fffff520003b8d8d R11: 0000000000000003 R12: ffffffffffffffe8
R13: ffff8880a79fc000 R14: ffff88809aba0e00 R15: 0000000000000000
FS:  0000000001b51880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563f52cce140 CR3: 0000000093541000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tcf_action_cleanup+0x62/0x1b0 net/sched/act_api.c:119
 __tcf_action_put+0xfa/0x130 net/sched/act_api.c:135
 __tcf_idr_release net/sched/act_api.c:165 [inline]
 __tcf_idr_release+0x59/0xf0 net/sched/act_api.c:145
 tcf_idr_release include/net/act_api.h:171 [inline]
 tcf_ife_init+0x97c/0x1870 net/sched/act_ife.c:616
 tcf_action_init_1+0x6b6/0xa40 net/sched/act_api.c:944
 tcf_action_init+0x21a/0x330 net/sched/act_api.c:1000
 tcf_action_add+0xf5/0x3b0 net/sched/act_api.c:1410
 tc_ctl_action+0x390/0x488 net/sched/act_api.c:1465
 rtnetlink_rcv_msg+0x45e/0xaf0 net/core/rtnetlink.c:5424
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5442
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:639 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:659
 ____sys_sendmsg+0x753/0x880 net/socket.c:2330
 ___sys_sendmsg+0x100/0x170 net/socket.c:2384
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417
 __do_sys_sendmsg net/socket.c:2426 [inline]
 __se_sys_sendmsg net/socket.c:2424 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: 11a94d7fd8 ("net/sched: act_ife: validate the control action inside init()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 10:58:15 +01:00
David S. Miller
a72b6a1ee4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter updates for net

The following patchset contains Netfilter fixes for net:

1) Fix use-after-free in ipset bitmap destroy path, from Cong Wang.

2) Missing init netns in entry cleanup path of arp_tables,
   from Florian Westphal.

3) Fix WARN_ON in set destroy path due to missing cleanup on
   transaction error.

4) Incorrect netlink sanity check in tunnel, from Florian Westphal.

5) Missing sanity check for erspan version netlink attribute, also
   from Florian.

6) Remove WARN in nft_request_module() that can be triggered from
   userspace, from Florian Westphal.

7) Memleak in NFTA_HOOK_DEVS netlink parser, from Dan Carpenter.

8) List poison from commit path for flowtables that are added and
   deleted in the same batch, from Florian Westphal.

9) Fix NAT ICMP packet corruption, from Eyal Birger.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17 10:36:07 +01:00
Waiman Long
39e7234f00 locking/rwsem: Fix kernel crash when spinning on RWSEM_OWNER_UNKNOWN
The commit 91d2a812df ("locking/rwsem: Make handoff writer
optimistically spin on owner") will allow a recently woken up waiting
writer to spin on the owner. Unfortunately, if the owner happens to be
RWSEM_OWNER_UNKNOWN, the code will incorrectly spin on it leading to a
kernel crash. This is fixed by passing the proper non-spinnable bits
to rwsem_spin_on_owner() so that RWSEM_OWNER_UNKNOWN will be treated
as a non-spinnable target.

Fixes: 91d2a812df ("locking/rwsem: Make handoff writer optimistically spin on owner")

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20200115154336.8679-1-longman@redhat.com
2020-01-17 10:19:27 +01:00
Jens Axboe
44d282796f io_uring: only allow submit from owning task
If the credentials or the mm doesn't match, don't allow the task to
submit anything on behalf of this ring. The task that owns the ring can
pass the file descriptor to another task, but we don't want to allow
that task to submit an SQE that then assumes the ring mm and creds if
it needs to go async.

Cc: stable@vger.kernel.org
Suggested-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-16 21:43:24 -07:00
Linus Torvalds
575966e080 ARM: SoC fixes
I've been sitting on these longer than I meant, so the patch count is
 a bit higher than ideal for this part of the release. There's also some
 reverts of double-applied patches that brings the diffstat up a bit.
 
 With that said, the biggest changes are:
 
  - Revert of duplicate i2c device addition on two Aspeed (BMC) Devicetrees.
  - Move of two device nodes that got applied to the wrong part of the
    tree on ASpeed G6.
  - Regulator fix for Beaglebone X15 (adding 12/5V supplies)
  - Use interrupts for keys on Amlogic SM1 to avoid missed polls
 
 In addition to that, there is a collection of smaller DT fixes:
 
  - Power supply assignment fixes for i.MX6
  - Fix of interrupt line for magnetometer on i.MX8 Librem5 devkit
  - Build fixlets (selects) for davinci/omap2+
  - More interrupt number fixes for Stratix10, Amlogic SM1, etc.
  - ... and more similar fixes across different platforms
 
 And some non-DT stuff:
 
  - optee fix to register multiple shared pages properly
  - Clock calculation fixes for MMP3
  - Clock fixes for OMAP as well
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Olof Johansson:
 "I've been sitting on these longer than I meant, so the patch count is
  a bit higher than ideal for this part of the release. There's also
  some reverts of double-applied patches that brings the diffstat up a
  bit.

  With that said, the biggest changes are:

   - Revert of duplicate i2c device addition on two Aspeed (BMC)
     Devicetrees.

   - Move of two device nodes that got applied to the wrong part of the
     tree on ASpeed G6.

   - Regulator fix for Beaglebone X15 (adding 12/5V supplies)

   - Use interrupts for keys on Amlogic SM1 to avoid missed polls

  In addition to that, there is a collection of smaller DT fixes:

   - Power supply assignment fixes for i.MX6

   - Fix of interrupt line for magnetometer on i.MX8 Librem5 devkit

   - Build fixlets (selects) for davinci/omap2+

   - More interrupt number fixes for Stratix10, Amlogic SM1, etc.

   - ... and more similar fixes across different platforms

  And some non-DT stuff:

   - optee fix to register multiple shared pages properly

   - Clock calculation fixes for MMP3

   - Clock fixes for OMAP as well"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (42 commits)
  MAINTAINERS: Add myself as the co-maintainer for Actions Semi platforms
  ARM: dts: imx7: Fix Toradex Colibri iMX7S 256MB NAND flash support
  ARM: dts: imx6sll-evk: Remove incorrect power supply assignment
  ARM: dts: imx6sl-evk: Remove incorrect power supply assignment
  ARM: dts: imx6sx-sdb: Remove incorrect power supply assignment
  ARM: dts: imx6qdl-sabresd: Remove incorrect power supply assignment
  ARM: dts: imx6q-icore-mipi: Use 1.5 version of i.Core MX6DL
  ARM: omap2plus: select RESET_CONTROLLER
  ARM: davinci: select CONFIG_RESET_CONTROLLER
  ARM: dts: aspeed: rainier: Fix fan fault and presence
  ARM: dts: aspeed: rainier: Remove duplicate i2c busses
  ARM: dts: aspeed: tacoma: Remove duplicate flash nodes
  ARM: dts: aspeed: tacoma: Remove duplicate i2c busses
  ARM: dts: aspeed: tacoma: Fix fsi master node
  ARM: dts: aspeed-g6: Fix FSI master location
  ARM: dts: mmp3: Fix the TWSI ranges
  clk: mmp2: Fix the order of timer mux parents
  ARM: mmp: do not divide the clock rate
  arm64: dts: rockchip: Fix IR on Beelink A1
  optee: Fix multi page dynamic shm pool alloc
  ...
2020-01-16 19:42:08 -08:00
Linus Torvalds
ef64753c19 Second collection of clk fixes for the next release. This one includes a
fix for PM on TI SoCs with sysc devices and fixes a bunch of clks that
 are stuck always enabled on Qualcomm SDM845 SoCs. Allwinner SoCs get the
 usual set of fixes too, mostly correcting drivers to have the right bits
 that match the hardware. There's also a Samsung and Tegra fix in here
 to mark a clk critical and avoid a double free. And finally there's a
 fix for critical clks that silences a big warning splat about trying
 to enable a clk that couldn't even be prepared.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Second collection of clk fixes for the next release.

  This one includes a fix for PM on TI SoCs with sysc devices and fixes
  a bunch of clks that are stuck always enabled on Qualcomm SDM845 SoCs.

  Allwinner SoCs get the usual set of fixes too, mostly correcting
  drivers to have the right bits that match the hardware.

  There's also a Samsung and Tegra fix in here to mark a clk critical
  and avoid a double free.

  And finally there's a fix for critical clks that silences a big
  warning splat about trying to enable a clk that couldn't even be
  prepared"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: ti: dra7-atl: Remove pm_runtime_irq_safe()
  clk: qcom: gcc-sdm845: Add missing flag to votable GDSCs
  clk: sunxi-ng: h6-r: Fix AR100/R_APB2 parent order
  clk: sunxi-ng: h6-r: Simplify R_APB1 clock definition
  clk: sunxi-ng: sun8i-r: Fix divider on APB0 clock
  clk: Don't try to enable critical clocks if prepare failed
  clk: tegra: Fix double-free in tegra_clk_init()
  clk: samsung: exynos5420: Keep top G3D clocks enabled
  clk: sunxi-ng: r40: Allow setting parent rate for external clock outputs
  clk: sunxi-ng: v3s: Fix incorrect number of hw_clks.
2020-01-16 19:25:11 -08:00
Linus Torvalds
f4353c3e2a Power management fix for 5.5-rc7
Fix a coding mistake in the teo cpuidle governor causing data
 to be written beyond the last array element (Ikjoon Jang).
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Merge tag 'pm-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "Fix a coding mistake in the teo cpuidle governor causing data to be
  written beyond the last array element (Ikjoon Jang)"

* tag 'pm-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle: teo: Fix intervals[] array indexing bug
2020-01-16 15:55:30 -08:00
Manivannan Sadhasivam
70db729fe1 MAINTAINERS: Add myself as the co-maintainer for Actions Semi platforms
Since I've been doing the maintainership work for couple of cycles, we've
decided to add myself as the co-maintainer along with Andreas.

Link: https://lore.kernel.org/r/20200114084348.25659-2-manivannan.sadhasivam@linaro.org
Cc: "Andreas Färber" <afaerber@suse.de>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-16 15:49:19 -08:00
Tom Lendacky
a006483b2f x86/CPU/AMD: Ensure clearing of SME/SEV features is maintained
If the SME and SEV features are present via CPUID, but memory encryption
support is not enabled (MSR 0xC001_0010[23]), the feature flags are cleared
using clear_cpu_cap(). However, if get_cpu_cap() is later called, these
feature flags will be reset back to present, which is not desired.

Change from using clear_cpu_cap() to setup_clear_cpu_cap() so that the
clearing of the flags is maintained.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org> # 4.16.x-
Link: https://lkml.kernel.org/r/226de90a703c3c0be5a49565047905ac4e94e8f3.1579125915.git.thomas.lendacky@amd.com
2020-01-16 20:23:20 +01:00
Wenjing Liu
31635887cb drm/amd/display: skip opp blank or unblank if test pattern enabled
[why]
DPG is used to generate both blank and test automation test pattern.
When test automation is running the requested test pattern can be
overriden by the blank or unblank call because it is using the same
hardware.

[how]
When test pattern is requested, skip blank or unblank.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:17:08 -05:00
Aric Cyr
f7ce7d6170 drm/amd/display: 3.2.68
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:17:02 -05:00
Paul Hsieh
ffdaeb1f45 drm/amd/display: reallocate MST payload when link loss
[Why]
Try to allocate MST payload but receive HPD short pulse with link loss
casue driver allocate payload twice. It cause monitor can't light up
successfully.

[How]
When driver receive HPD short pulse with link loss, we need to
deallocate payload then allocate payload.
Then we will not allocate payload twice with same sink.

Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:54 -05:00
Jun Lei
34ad023006 drm/amd/display: fixup DML dependencies
[why]
Need to fix DML portability issues to enable SW unit testing around DML

[how]
Move calcs into dc include folder since multiple components reference it
Remove relative paths to external dependencies

Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:48 -05:00
Martin Tsai
38259bacd7 drm/amd/display: Use mdelay to avoid context switch
[why]
The rapid msleep operation causes the white line garbage when
DAL check flip pending status in SetVidPnSourceVisibility.
To execute this msleep will induce context switch, and longer
delay could cause worse garbage situation.

[how]
To replace msleep with mdelay.

Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:40 -05:00
Yongqiang Sun
bae9c49bf0 drm/amd/display: Only program surface flip for video plane via dmcub
Only need to do surface flip for video plane via dmcub.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:33 -05:00
Alvin Lee
9f21f3792f drm/amd/display: Enable double buffer for OTG_BLANK
[Why]
Currently if seamless boot is enabled, we will skip double buffer enable
for OTG_BLANK. However, we need the double buffer enable in order to
block global sync signals when OTG becomes blanked (for PSR). Blocking
global sync signals prevent pipe from requesting data.

[How]
Move tg_init before seamless boot check.

Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:27 -05:00
Lewis Huang
8547058b17 drm/amd/display: Add monitor patch for AUO dpcd issue
[Why]
dpcd cap mismatch in 2200 vs base

[How]
Add monitor patch which using based caps to overwrite 2200

Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:21 -05:00
Wenjing Liu
4134aaa11b drm/amd/display: wait for test pattern after when all pipes are programmed
[why]
Currently we wait for test pattern after each pipe is programmed.  For
ODM combined scenario it will cause test pattern is shown on only half
screen for 1 frame. This is not desirable.

[how]
No wait between odm pipe programming, only wait after all pipes are
programmed.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:15 -05:00
Anthony Koo
5b5abe9526 drm/amd/display: make PSR static screen entry within 30 ms
[Why]
With different refresh rate panels, the PSR entry/exit time is
different since it is dependent on 2 frame entry time today

[How]
Make static screen num frame entry time to be calculated
such that entry time is within 30 ms instead of fixed num
frames.

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:08 -05:00
Aric Cyr
9a25e13b91 drm/amd/display: 3.2.67
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:16:02 -05:00
Lewis Huang
6e0ca5ca83 drm/amd/display: remove psr state condition when psr exit case
[Why]
DMCU need to wait a vblank to handle psr enter command. When psr exit
coming before vblank, the psr exit command will be skip because current
psr state is disable.

[How]
remove psr state condition when psr exit case

Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:56 -05:00
Josip Pavic
38a20a4580 drm/amd/display: implement fw-driver interface for abm 2.4
[Why]
IRAM definition needed for versions of DMCU containing ABM 2.4

[How]
Pass ABM 2.3 IRAM definition, which is compatible with ABM 2.4, to DMCU
when ABM 2.4 FW is detected

Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:49 -05:00
Chris Park
d905c33a43 drm/amd/display: Add default switch case for DCC
Signed-off-by: Chris Park <Chris.Park@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Reviewed-by: Jordan Lazare <Jordan.Lazare@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:42 -05:00
Sung Lee
08f6c85921 drm/amd/display: Use SMU ClockTable Values for DML Calculations
[Why]
DML Initialization was previously done on dcn21_resource initialization.
This meant that DML soc struct was populated with hardcoded values.

[How]
Move DML initialization to after updating bounding box, to use clock table
values from SMU.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:35 -05:00
Charlene Liu
51f2af1d83 drm/amd/display: rename _lvp to l_vp
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:28 -05:00
George Shen
ee76592482 drm/amd/display: Add w/a to reset PHY before link training in verify_link_cap
[Why]
PHY will sometimes be in bad state on hotplugging display from USB-C
dongle.

[How]
Add additional calls to disable and then enable PHY before link training
starts during verify_link_cap.

Signed-off-by: George Shen <george.shen@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:17 -05:00
Wyatt Wood
5adc673c77 drm/amd/display: Fix DMUB PSR command IDs
[Why]
The DMUB PSR command IDs do not have the correct values.

[How]
Fix the command IDs and cleanup the formatting.

Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:15:11 -05:00
Yongqiang Sun
22aa56145f drm/amd/display: Refactor surface flip programming
Rework surface programming for RN to separate preparing parameters and
register programming.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:14:02 -05:00
Noah Abradjian
c1e3417558 drm/amd/display: Indirect reg read macro with shift and mask
[Why]
Recent double buffering changes for dcn2 use IX_REG_READ.
However, this macro returns the full register value, with the need to
manually shift and mask it to retrieve field data.

[How]
Create new IX_REG_GET macro that handles shift and mask.
Use this for double buffering reads instead of IX_REG_READ.

Signed-off-by: Noah Abradjian <noah.abradjian@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:13:53 -05:00
Wyatt Wood
ec256f449c drm/amd/display: DMCUB FW Changes to support PSR
[Why]
Moving PSR from DMCU to DMCUB.

[How]
Cleanup psr spec files and add PSR hw programming files.
No functionality is included in this change.

Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:13:46 -05:00
Yongqiang Sun
8c0192533c drm/amd/display: programing surface flip by dmcub.
Programming surface flip addresses via dmcub uC for optimizing the data
flush.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:13:38 -05:00
Noah Abradjian
2c1a180ac1 drm/amd/display: Double buffer dcn2 Gamut Remap
[Why]
When rapidly adjusting color temperature, screen tearing was observed.
This was due to overwritten values in gamut remap registers.
This issue was solved for OCSC and ICSC by alternating between "A" and
"B" registers to double buffer the writes.

[How]
Create new set_gamut_remap and program_gamut_remap for dcn20.
Alternate which registers are written to by switching modes each time.
Also fixes ICSC mode reg read to use proper data offset.

Signed-off-by: Noah Abradjian <noah.abradjian@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:13:30 -05:00
Wyatt Wood
4c1a1335df drm/amd/display: Driverside changes to support PSR in DMCUB
[Why]
Moving PSR from DMCU to DMCUB.

[How]
Add driverside PSR changes required to send inbox messages to fw.
These changes are non-functional until the psr structure allocation
is uncommented.

Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:13:23 -05:00
Noah Abradjian
d9eb70ae61 drm/amd/display: Fix double buffering in dcn2 ICSC
[Why]
When rapidly adjusting video brightness, screen tearing was observed.
This was due to overwritten values in ICSC registers. In dcn10, this issue had been
fixed by implementing double buffering via alternating ICSC modes.
However, the second register set used in dcn1 doesn't exist in dcn2.

[How]
Create new program_input_csc for dcn20.
Use ICSC_B registers instead of COMA registers as second set.

Signed-off-by: Noah Abradjian <noah.abradjian@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 14:13:16 -05:00