The variable rx_process_result is being initialized with a value that
is never read and is being re-assigned immediately afterwards. The
assignment is redundant, so replace it with the return from function
lan743x_rx_process_packet.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The dev_kfree_skb() function performs also input parameter validation.
Thus the test around the shown calls is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for unifying the skb_frag and bio_vec, use the fine
accessors which already exist and use skb_frag_t instead of
struct skb_frag_struct.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix few indentation splats. No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Amend comments in the code:
- adding periods to the multi-line comments
- fixing typos
- capitalize first word in the sentences
- etc
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no need to include linux/init.h when at the same time
we include linux/module.h.
Remove redundant inclusion.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The debug prints of network operations will look better if network
device name is printed. The benefit of that is a possibility to distinguish
the actual hardware when more than one is installed on the system.
Convert appropriate printk(KERN_DEBUG) to netdev_print(KERN_DEBUG, ndev).
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The debug prints of hardware status and operations will look better
if SPI device name is printed. The benefit of that is a possibility
to distinguish the actual hardware when more than one is installed
on the system.
Convert appropriate printk(KERN_DEBUG) to dev_print(KERN_DEBUG, &spi->dev).
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of using open coded printk(KERN_<LEVEL>) switch the driver to use
dev_<level> macros.
Note, the device name will be printed in full, which is beneficial when
more than one card installed on the system.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use ether_addr_copy() instead of memcpy() to copy the mac address.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eliminate some boilerplate code by using module_spi_driver() instead of
->init() / ->exit(), moving the salient bits from ->init() into ->probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When dev_<level>() macros are used against SPI device, the driver's name
is printed as well. No need to duplicate this explicitly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace open coded netdev_<level>() macros.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ->probe() and ->remove() stages can be easily debugged with
initcall_debug or function tracer. There is no need to repeat the same
explicitly in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace the DT-specific of_get_mac_address() function with
device_get_mac_address, which works on both DT and ACPI platforms.
This change makes it easier to add ACPI support.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It has been observed that tx queue may stall while downloading
from certain web sites (example www.speedtest.net)
The cause has been tracked down to a corner case where
the tx interrupt vector was disabled automatically, but
was not re enabled later.
The lan743x has two mechanisms to enable/disable individual
interrupts. Interrupts can be enabled/disabled by individual
source, and they can also be enabled/disabled by individual
vector which has been mapped to the source. Both must be
enabled for interrupts to work properly.
The TX code path, primarily uses the interrupt enable/disable of
the TX source bit, while leaving the vector enabled all the time.
However, while investigating this issue it was noticed that
the driver requested the use of the vector auto clear feature.
The test above revealed a case where the vector enable was
cleared unintentionally.
This patch fixes the issue by deleting the lines that request
the vector auto clear feature to be used.
Fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It has been noticed that running the speed test at
www.speedtest.net occasionally causes a kernel panic.
Investigation revealed that under this test RX buffer allocation
sometimes fails and returns NULL. But the lan743x driver did
not handle this case.
This patch fixes this issue by attempting to allocate a buffer
before sending the new rx packet to the OS. If the allocation
fails then the new rx packet is dropped and the existing buffer
is reused in the DMA ring.
Updates for v2:
Additional 2 locations where allocation was not checked,
has been changed to reuse existing buffer.
Fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It has been observed that tx queue stalls while downloading
from certain web sites (example www.speedtest.net)
The cause has been tracked down to a corner case where
dma descriptors where not setup properly. And there for a tx
completion interrupt was not signaled.
This fix corrects the problem by properly marking the end of
a multi descriptor transmission.
Fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The netif_msg_init() API takes on input the amount of bits to be set. The
description of debug parameter in the enc28j60 module is misleading in this
sense and passing 0xffff does not give an expected behaviour.
Fix the description of debug module parameter to show what exactly is expected.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The LAN743x includes on chip One-Time-Programmable (OTP) memory.
This patch extends the ethtool EEPROM read/write interface to
access OTP memory space.
The currently existing interface is limited, as it does not
allow OTP read, and OTP writes are restricted to
offset==0, length==512, and data[0]==0xF3.
This patch removes these restrictions and adds a private flag
called OTP_ACCESS, which is used to switch between EEPROM, and
OTP modes.
The private flag OTP_ACCESS is configurable through the
ethtool --set-priv-flags command.
And visible through the
ethtool --show-priv-flags command.
By default OTP_ACCESS is false, and there for previously existing
EEPROM commands will work exactly the same. However now access to
OTP requires one extra step of setting OTP_ACCESS to true. This
flag controls the read, write, and length reporting, functions
of ethtool.
EEPROM presence is not checked when setting or clearing this flag.
If the EEPROM is not present, the user, as before, will need to
diagnose that using existing read and write function of ethtool,
while OTP_ACCESS is false.
Updates for V2:
Added comments as to why this patch is needed.
Added comments explaining that EEPROM presence is not check
when setting or clearing the OTP_ACCESS flag.
Added length checking to all otp/eeprom read/write functions.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It has been noticed that some phys do not have the registers
required by the previous implementation.
To fix this, instead of using phy_read, the required information
is extracted from the phy_device structure.
fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The MAC Reset was noticed to erase important EEPROM settings.
It is also unnecessary since a chip wide reset was done earlier
in initialization, and that reset preserves EEPROM settings.
There for this patch removes the unnecessary MAC specific reset.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The LAN7431 uses an external phy, and it can be found anywhere in
the phy address space. This patch uses phy address 1 for LAN7430
only. And searches all addresses otherwise.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This driver was designed to work with both LAN7430 and LAN7431.
The only difference between the two is the LAN7431 has support
for external phy.
This change adds LAN7431 to the list of recognized devices
supported by this driver.
Updates for v2:
changed 'fixes' tag to match defined format
fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The lan743x driver, when under heavy traffic load, has been noticed
to sometimes hang, or cause a kernel panic.
Debugging reveals that the TX napi poll routine was returning
the wrong value, 'weight'. Most other drivers return 0.
And call napi_complete, instead of napi_complete_done.
Additionally when creating the tx napi poll routine.
Changed netif_napi_add, to netif_tx_napi_add.
Updates for v3:
changed 'fixes' tag to match defined format
Updates for v2:
use napi_complete, instead of napi_complete_done in
lan743x_tx_napi_poll
use netif_tx_napi_add, instead of netif_napi_add for
registration of tx napi poll routine
fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The SPI dependency does not apply to lan743x driver, and other
drivers in the group already state their dependence on SPI.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Two new tls tests added in parallel in both net and net-next.
Used Stephen Rothwell's linux-next resolution.
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix the following compile warning:
drivers/net/ethernet/microchip/lan743x_main.c:2964:12: warning: lan743x_pm_suspend defined but not used [-Wunused-function]
static int lan743x_pm_suspend(struct device *dev)
drivers/net/ethernet/microchip/lan743x_main.c:2987:12: warning: lan743x_pm_resume defined but not used [-Wunused-function]
static int lan743x_pm_resume(struct device *dev)
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rather than have the MAC drivers manipulate phydev members to indicate
they support Asym Pause, add a helper function.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some MAC hardware cannot support a subset of link modes. e.g. often
1Gbps Full duplex is supported, but Half duplex is not. Add a helper
to remove such a link mode.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes the following sparse warning:
drivers/net/ethernet/microchip/lan743x_ptp.c:980:6: warning:
symbol 'lan743x_ptp_set_sync_ts_insert' was not declared. Should it be static?
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
timekeeping_clocktai64() has been renamed to ktime_get_clocktai_ts64()
for consistency with the other ktime_get_* access functions.
Rename the new caller that has come up as well.
Question: this is the only ptp driver that sets the hardware time
to the current system time in TAI. Why does it do that?
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Building without CONFIG_PTP_1588_CLOCK results in multiple failures,
this was obviously not well tested:
drivers/net/ethernet/microchip/lan743x_ptp.c: In function 'lan743x_ptp_isr':
drivers/net/ethernet/microchip/lan743x_ptp.c:781:28: error: 'struct lan743x_ptp' has no member named 'ptp_clock'; did you mean 'tx_ts_lock'?
ptp_schedule_worker(ptp->ptp_clock, 0);
^~~~~~~~~
tx_ts_lock
drivers/net/ethernet/microchip/lan743x_ptp.c: In function 'lan743x_ptp_open':
drivers/net/ethernet/microchip/lan743x_ptp.c:879:6: error: unused variable 'ret' [-Werror=unused-variable]
int ret = -ENODEV;
^~~
At top level:
drivers/net/ethernet/microchip/lan743x_ptp.c:63:13: error: 'lan743x_ptp_tx_ts_enqueue_ts' defined but not used [-Werror=unused-function]
static void lan743x_ptp_tx_ts_enqueue_ts(struct lan743x_adapter *adapter,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
drivers/net/ethernet/microchip/lan743x_ethtool.c: In function 'lan743x_ethtool_get_ts_info':
drivers/net/ethernet/microchip/lan743x_ethtool.c:558:19: error: 'struct lan743x_ptp' has no member named 'ptp_clock'; did you mean 'tx_ts_lock'?
Those #ifdef checks are hard to get right, replace them all with
IS_ENABLED() checks that leave the same code visible to the compiler
but let it optimize out the unused bits based on the configuration.
Fixes: 07624df1c9 ("lan743x: lan743x: Add PTP support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
lan743x now fails to build when CONFIG_CRC16 is disabled:
drivers/net/ethernet/microchip/lan743x_main.o: In function crc16'
Force it on like all other users do.
Fixes: 4d94282afd ("lan743x: Add power management support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
PTP support includes:
Ingress, and egress timestamping.
One step timestamping available.
PTP clock support.
Periodic output support.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes the following sparse warning:
drivers/net/ethernet/microchip/lan743x_main.c:2944:25: warning:
symbol 'lan743x_pm_ops' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement power management
Supports suspend, resume, and Wake on LAN
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement ethtool eeprom access
Also provides access to OTP (One Time Programming)
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement ethtool message level
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement ethtool statistics
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use default link setting functions
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement ethtool get_drvinfo
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
