Commit Graph

39618 Commits

Author SHA1 Message Date
Akeem G. Abodunrin
f7727c5309 igb: Removed unused i2c function
This patch removes unused i2c function definition.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 03:08:15 -07:00
Akeem G. Abodunrin
6f8b916065 igb: Implementation of i210/i211 LED support
This patch fixes LED issues with i210 and i211 devices, due to changes in the
device registers.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 03:01:58 -07:00
Carolyn Wyborny
41f149a285 igb: Fix possible panic caused by Rx traffic arrival while interface is down
This patch reorders disabling napi and irqs during igb_down.
This is done to avoid possible panic's found in other Intel drivers
when Rx traffic arrives while interface is going down.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:55:38 -07:00
Carolyn Wyborny
2a0a0f1ea2 igb: Fix set_ethtool function to call update nvm for entire image
This patch fixes a problem where we were only checking to update checksum
on first part of nvm image.  Newer parts have multiple checksum fields and
checksum function will accommodate that as long as we call it in the first
place for any changes made.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:49:34 -07:00
Akeem G. Abodunrin
373e6978f9 igb: SerDes flow control setting
This path allows users to get appropriate flow control setting on SerDes
devices, based on original implementation for Copper devices.
Also, since 100baseFX does not support setting flow control, so exclude
it from the setting mechanism.

Signed-off-by: Akeem G. Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:43:39 -07:00
Akeem G. Abodunrin
641ac5c0cd igb: Support for SFP modules discovery
This patch adds support for SFP modules media type discovery for
SGMII, which will enable driver to detect supported external PHYs,
including 100baseFXSFP module.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:37:36 -07:00
Matthew Vick
20a4841228 igb: Add update to last_rx_timestamp in Rx rings
In order to support a more accurate check for a PTP Rx hang where the
device can no longer timestamp received packets, we need to update, per
ring, when the last Rx timestamp was. Because of how the PTP Rx hang logic
works, the current logic is valid, but properly updating the ring variable
increases the accuracy of the check.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:31:43 -07:00
Akeem G. Abodunrin
cf7ed22171 igb: Changed LEDs blink mechanism to include designs using cathode
This patch addresses the changes needed to make LEDs work properly with
negative logic. This implementation uses LED Invert bit to reverse the
logic issue that occurred when LEDs are driven by cathode. Keep LEDs
blinking for SerDes devices. Also made changes to magic number and the
for loop to reduce number of shifts.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:25:25 -07:00
Akeem G. Abodunrin
6c1d8b96d0 e1000e: Release mutex lock only if it has been initially acquired
This patch fixes the issue of unlocking swflag_mutex for 82574 and 82583
devices regardless of if the hw semaphore has been successfully acquired via
e1000_get_hw_semaphore_82574(). With this patch, unlocking mutex now depends
on if the hw semaphore was successfully acquired before. And 82574/82583
devices are reset regardless of whether e1000_get_hw_semaphore_82574()
returns success or failure.

Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:19:03 -07:00
Bruce Allan
603cdca980 e1000e: prevent warning from -Wunused-parameter
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:13:07 -07:00
Bruce Allan
e80bd1d181 e1000e: cleanup whitespace
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:07:01 -07:00
Florian Fainelli
5ea94e7686 phy: add phy_mac_interrupt() to use with PHY_IGNORE_INTERRUPT
There is currently no way for an Ethernet MAC driver servicing PHY link
interrupts to notify this to the PHY state machine without defining its
own state machine. Since most drivers are not so special, introduce a
helper: phy_mac_interrupt() which can be called from a link up/down
interrupt routine to update the PHY state machine. To avoid code
duplication some refactoring has been done to expose the workqueue and
its corresponding callback internally.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:13:08 -07:00
Florian Fainelli
2c7b49212a phy: fix the use of PHY_IGNORE_INTERRUPT
When a PHY device is registered with the special IRQ value
PHY_IGNORE_INTERRUPT (-2) it will not properly be handled by the PHY
library:

- it continues to poll its register, while we do not want this
  because such PHY link events or register changes are serviced by an
  Ethernet MAC
- it will still try to configure PHY interrupts at the PHY level, such
  interrupts do not exist at the PHY but at the MAC level
- the state machine only handles PHY_POLL, but should also handle
  PHY_IGNORE_INTERRUPT similarly

This patch updates the PHY state machine and initialization paths to
account for the specific PHY_IGNORE_INTERRUPT. Based on an earlier patch
by Thomas Petazzoni, and reworked to add the missing bits. Add a helper
phy_interrupt_is_valid() which specifically tests for a PHY interrupt
not to be PHY_POLL or PHY_IGNORE_INTERRUPT and use it throughout the
code.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:13:08 -07:00
Rasesh Mody
45e9834143 bna: Driver and Firmware Updated
Driver and Firmware versions updated to 3.2.21.1.

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:07:59 -07:00
Rasesh Mody
43c07adaeb bna: Enahncement to Identify Default IOC Function
User should not be allowed to delete base function of eth port. Add a new field
to the bfa ioc attributes structure to indicate if the given ioc is default
function on the port or not.

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:07:59 -07:00
Rasesh Mody
f489a4ba76 bna: Fix Ucast Failure Handling
Failure of the UCAST set for base mac address fails when user configures a
duplicate mac address that matches that of another vNIC on the same port.
The bna does not handle the ucast failure and keeps this address in cache.
On disable of the vNIC, bna tries to delete the failed base mac address and the
fw asserts.

On failure of ucast address, mark ucast address set to false.

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:07:59 -07:00
Rasesh Mody
4b2305826c bna: Clear Driver Config Flags When HW Resets
Driver configuration flags are retained across open/stop operations preventing
configurations to be set in next open/stop. Setting MTU on a 1020 causes
network to fail until a reboot is performed on the host.

Clear the flags when configuration resets in hardware.

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:07:59 -07:00
Tomasz Figa
0b8bf1baab net: dm9000: Allow instantiation using device tree
This patch adds Device Tree support to dm9000 driver.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Reviewed-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:03:51 -07:00
Fabio Estevam
4a5bddf7ea fec: Let device core handle pinctrl
Since commit ab78029 (drivers/pinctrl: grab default handles from device core)
we can rely on device core for handling pinctrl, so remove
devm_pinctrl_get_select_default() from the driver.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:44:32 -07:00
Wei Liu
1ca2983aaa xen-netfront: avoid leaking resources when setup_netfront fails
We should correctly free related resources (grant ref, memory page, evtchn)
when setup_netfront fails.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:43:09 -07:00
Tony Prisk
6dffbe53fb net: velocity: Add platform device support to VIA velocity driver
Add support for the VIA Velocity network driver to be bound to a
OF created platform device.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:40:39 -07:00
Tony Prisk
e2c41f143f net: velocity: Convert to generic dma functions
Remove the pci_* dma functions and replace with the more generic
versions.

In preparation of adding platform support, a new struct device *dev
is added to struct velocity_info which can be used by both the pci
and platform code.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:40:39 -07:00
Tony Prisk
a9683c94fe net: velocity: Rename vptr->dev to vptr->netdev
Improve the clarity of the code in preparation for converting the
dma functions to generic versions, which require a struct device *.

This makes it possible to store a 'struct device *dev' in the
velocity_info structure.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:40:39 -07:00
Sergei Shtylyov
4fc1ad6f4b 3c59x: remove useless VORTEX_PCI() invocations
It's suboptimal to invoke quite complex VORTEX_PCI() macro every time we want
to get a 'struct pci_dev *' when we already have it in a variable...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:34:20 -07:00
Rolf Eike Beer
1e18583adc ThunderLAN: remove is_eisa flag
These 2 places are the only matches for is_eisa in the whole tree.

Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 00:20:14 -07:00
Eric Dumazet
8802f5790e net-bnx2x: dont reload on GRO change
bnx2x_set_features() forces a driver reload if GRO setting is changed.

A reload makes the ethernet port unresponsive for about 5 seconds.

This is not needed in the common case LRO is enabled, as LRO
(TPA_ENABLE_FLAG) has precedence over GRO (GRO_ENABLE_FLAG)

Tested:
 Verified that "ethtool -K eth0 gro {on|off}" doesn't blackout
 the NIC anymore

Google-Bug-Id: 8440442
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Dmitry Kravkov <dmitry@broadcom.com>
Acked-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 00:16:21 -07:00
Nithin Sujir
1cbf9eb85a tg3: Implement set/get_eee handlers
Reviewed-by: Ben Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 00:13:48 -07:00
Nithin Sujir
5b6c273ad6 tg3: Simplify tg3_phy_eee_config_ok() by reusing tg3_eee_pull_config()
eee_config_ok() was checking only for mismatch in advertised settings.
This patch expands the scope of eee_config_ok() to check for mismatch in
the other eee settings. On mismatch we will require a call to
tg3_setup_eee() to push the configured settings to the hardware.

Reviewed-by: Ben Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 00:13:47 -07:00
Nithin Sujir
400dfbaa8d tg3: Add tg3_eee_pull_config() function
Add tg3_eee_pull_config() to pull the settings from the hardware and
populate the eee structure.

If Link Flap Avoidance is enabled, we pull the eee settings from the hw
so as not to cause a phy reset on eee config mismatch later. This
requires moving down tg3_setup_eee() below the tg3_pull_config() to not
trample existing settings.

Reviewed-by: Ben Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 00:13:47 -07:00
Nithin Sujir
9e2ecbeb25 tg3: Add ethtool_eee struct and tg3_setup_eee()
Add an eee structure and update it with eee settings. This will be used
for set/get_eee operations. Add common function tg3_setup_eee() that
will be used in the subsequent patches.

Reviewed-by: Ben Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 00:13:47 -07:00
Wei Liu
b103f358d9 xen-netback: enable user to unload netback module
This patch enables user to unload netback module, which is useful when user
wants to upgrade to a newer netback module without rebooting the host.

Netfront cannot handle netback removal event. As we cannot fix all possible
frontends we add module get / put along with vif get / put to avoid
mis-unloading of netback. To unload netback module, user needs to shutdown all
VMs or migrate them to another host or unplug all vifs before hand.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>¬
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 18:23:07 -07:00
Wei Liu
f1db320ec5 xen-netback: remove dead code
The array mmap_pages is never touched in the initialization function. This is
remnant of mapping mechanism, which does not exist upstream. In current
upstream code this array only tracks usage of pages inside netback. Those
pages are allocated when contructing a SKB and passed directly to network
subsystem.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 18:23:07 -07:00
Sachin Kamat
b4236daa41 net/usb: r8152: Use module_usb_driver()
module_usb_driver() eliminates boilerplate and simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Realtek linux nic maintainers <nic_swsd@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 14:18:35 -07:00
Sachin Kamat
18cf1f1270 net/usb: r8152: Remove redundant version.h header inclusion
version.h header inclusion is not necessary as detected by
checkversion.pl.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 14:18:35 -07:00
stephen hemminger
553675fb5e vxlan: listen on multiple ports
The commit 823aa873bc
  Author: stephen hemminger <stephen@networkplumber.org>
  Date:   Sat Apr 27 11:31:57 2013 +0000

    vxlan: allow choosing destination port per vxlan

introduced per-vxlan UDP port configuration but only did half of the
necessary work.  It added per vxlan destination for sending, but
overlooked the handling of multiple ports for incoming traffic.

This patch changes the listening port management to handle multiple
incoming UDP ports. The earlier per-namespace structure is now a hash
list per namespace.

It is also now possible to define the same virtual network id
but with different UDP port values which can be useful for migration.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 14:06:29 -07:00
Emilio López
e998fd413e net: ethernet: korina: initialize variables directly
Clean up the code a bit to initialize the variables directly when
defining them.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 13:55:44 -07:00
Emilio López
35e729ac5d net: ethernet: davicom: dm9000: initialize variables directly
Clean up the code a bit to initialize the variables directly when
defining them.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 13:55:44 -07:00
Emilio López
3b0aaef800 net: ethernet: apple: initialize variables directly
Clean up the code a bit to initialize the variables directly when
defining them.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 13:55:44 -07:00
Emilio López
bfd428daaf net: ethernet: sun: initialize variables directly
Clean up the code a bit to initialize the variables directly when
defining them.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-17 13:55:43 -07:00
David S. Miller
345af953b9 Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next
Marc Kleine-Budde says:

====================
this is a pull-request for net-next/master. It consists of 4 patches by
Jingoo Han, which remove the unnecessary platform_set_drvdata() and a
patch by Laurent Navet converting the grcan driver to use
devm_ioremap_resource().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-16 17:07:46 -07:00
govindarajulu.v
ed8a83a1f4 net: 3com: 3c509: remove unnecessary code
This patch removes unnecessary #if 0 code from 3c509.c

Signed-off-by: govindarajulu.v <govindarajulu90@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-16 15:19:45 -07:00
Wolfram Sang
d6a98c9680 drivers/net/ethernet/renesas: don't check resource with devm_ioremap_resource
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-16 15:19:45 -07:00
Jingoo Han
5727dc6bf5 net: can: ti_hecc: remove unnecessary platform_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-05-16 13:27:20 +02:00
Jingoo Han
688a2e7421 net: can: flexcan: remove unnecessary platform_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-05-16 13:27:19 +02:00
Jingoo Han
5e946e5623 net: can: c_can: remove unnecessary platform_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-05-16 13:27:18 +02:00
Jingoo Han
3e1dd6da1a net: can: at91_can: remove unnecessary platform_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-05-16 13:27:17 +02:00
Laurent Navet
bc441bc8e3 drivers: net: can: grcan: use devm_ioremap_resource()
Replace a call to deprecated devm_request_and_ioremap by devm_ioremap_resource.
dev_err() message is no more needed since it's already displayed in
devm_ioremap_resource().

Signed-off-by: Laurent Navet <laurent.navet@gmail.com>
Acked-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-05-16 13:27:15 +02:00
Wei Yongjun
ba21fc696d bna: add missing iounmap() on error in bnad_init()
Add the missing iounmap() before return from bnad_init()
in the error handling case.
Introduced by commit 01b54b1451
(bna: tx rx cleanup fix).

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-13 12:54:38 -07:00
Thadeu Lima de Souza Cascardo
ef38079401 qlge: fix dma map leak when the last chunk is not allocated
qlge allocates chunks from a page that it maps and unmaps that page when
the last chunk is released. When the driver is unloaded or the card is
removed, all chunks are released and the page is unmapped for the last
chunk.

However, when the last chunk of a page is not allocated and the device
is removed, that page is not unmapped. In fact, its last reference is
not put and there's also a page leak. This bug prevents a device from
being properly hotplugged.

When the DMA API debug option is enabled, the following messages show
the pending DMA allocation after we remove the driver.

This patch fixes the bug by unmapping and putting the page from the ring
if its last chunk has not been allocated.

pci 0005:98:00.0: DMA-API: device driver has pending DMA allocations while released from device [count=1]
One of leaked entries details: [device address=0x0000000060a80000] [size=65536 bytes] [mapped with DMA_FROM_DEVICE] [mapped as page]
------------[ cut here ]------------
WARNING: at lib/dma-debug.c:746
Modules linked in: qlge(-) rpadlpar_io rpaphp pci_hotplug fuse [last unloaded: qlge]
NIP: c0000000003fc3ec LR: c0000000003fc3e8 CTR: c00000000054de60
REGS: c0000003ee9c74e0 TRAP: 0700   Tainted: G           O  (3.7.2)
MSR: 8000000000029032 <SF,EE,ME,IR,DR,RI>  CR: 28002424  XER: 00000001
SOFTE: 1
CFAR: c0000000007a39c8
TASK = c0000003ee8d5c90[8406] 'rmmod' THREAD: c0000003ee9c4000 CPU: 31
GPR00: c0000000003fc3e8 c0000003ee9c7760 c000000000c789f8 00000000000000ee
GPR04: 0000000000000000 00000000000000ef 0000000000004000 0000000000010000
GPR08: 00000000000000be c000000000b22088 c000000000c4c218 00000000007c0000
GPR12: 0000000028002422 c00000000ff26c80 0000000000000000 000001001b0f1b40
GPR16: 00000000100cb9d8 0000000010093088 c000000000cdf910 0000000000000001
GPR20: 0000000000000000 c000000000dbfc00 0000000000000000 c000000000dbfb80
GPR24: c0000003fafc9d80 0000000000000001 000000000001ff80 c0000003f38f7888
GPR28: c000000000ddfc00 0000000000000400 c000000000bd7790 c000000000ddfb80
NIP [c0000000003fc3ec] .dma_debug_device_change+0x22c/0x2b0
LR [c0000000003fc3e8] .dma_debug_device_change+0x228/0x2b0
Call Trace:
[c0000003ee9c7760] [c0000000003fc3e8] .dma_debug_device_change+0x228/0x2b0 (unreliable)
[c0000003ee9c7840] [c00000000079a098] .notifier_call_chain+0x78/0xf0
[c0000003ee9c78e0] [c0000000000acc20] .__blocking_notifier_call_chain+0x70/0xb0
[c0000003ee9c7990] [c0000000004a9580] .__device_release_driver+0x100/0x140
[c0000003ee9c7a20] [c0000000004a9708] .driver_detach+0x148/0x150
[c0000003ee9c7ac0] [c0000000004a8144] .bus_remove_driver+0xc4/0x150
[c0000003ee9c7b60] [c0000000004aa58c] .driver_unregister+0x8c/0xe0
[c0000003ee9c7bf0] [c0000000004090b4] .pci_unregister_driver+0x34/0xf0
[c0000003ee9c7ca0] [d000000002231194] .qlge_exit+0x1c/0x34 [qlge]
[c0000003ee9c7d20] [c0000000000e36d8] .SyS_delete_module+0x1e8/0x290
[c0000003ee9c7e30] [c0000000000098d4] syscall_exit+0x0/0x94
Instruction dump:
7f26cb78 e818003a e87e81a0 e8f80028 e9180030 796b1f24 78001f24 7d6a5a14
7d2a002a e94b0020 483a7595 60000000 <0fe00000> 2fb80000 40de0048 80120050
---[ end trace 4294f9abdb01031d ]---
Mapped at:
 [<d000000002222f54>] .ql_update_lbq+0x384/0x580 [qlge]
 [<d000000002227bd0>] .ql_clean_inbound_rx_ring+0x300/0xc60 [qlge]
 [<d0000000022288cc>] .ql_napi_poll_msix+0x39c/0x5a0 [qlge]
 [<c0000000006b3c50>] .net_rx_action+0x170/0x300
 [<c000000000081840>] .__do_softirq+0x170/0x300

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Acked-by: Jitendra Kalsaria <Jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-13 12:54:38 -07:00
Amerigo Wang
d34710e3e3 virtio_net: use default napi weight by default
Since commit 82dc3c63c6 ("net: introduce NAPI_POLL_WEIGHT")
we warn drivers when they use napi weight higher than NAPI_POLL_WEIGHT,
but virtio_net still uses 128 by default. This patch makes its default
value to NAPI_POLL_WEIGHT.

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11 17:40:14 -07:00