Commit Graph

17954 Commits

Author SHA1 Message Date
David S. Miller 675c60706c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-02-23 01:27:05 -08:00
Atsushi Nemoto 662a96bd6f tc35815: Remove a wrong netif_wake_queue() call which triggers BUG_ON
The netif_wake_queue() is called correctly (i.e. only on !txfull
condition) from txdone routine.  So Unconditional call to the
netif_wake_queue() here is wrong.  This might cause calling of
start_xmit routine on txfull state and trigger BUG_ON.

This bug does not happen when NAPI disabled.  After txdone there
must be at least one free tx slot.  But with NAPI, this is not
true anymore and the BUG_ON can hits on heavy load.

In this driver NAPI was enabled on 2.6.33-rc1 so this is
regression from 2.6.32 kernel.

Reported-by: Ralf Roesch <ralf.roesch@rw-gmbh.de>
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23 01:25:01 -08:00
Torgny Johansson cac43a1b7b cdc_ether: new PID for Ericsson C3607w to the whitelist (resubmit)
This patch adds a new vid/pid to the cdc_ether whitelist.

Device added:
- Ericsson Mobile Broadband variant C3607w

Signed-off-by: Torgny Johansson <torgny.johansson@gmail.com>

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Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23 01:25:01 -08:00
Anton Blanchard b5abb028e2 e1000: Fix DMA mapping error handling on RX
Check for error return from pci_map_single/pci_map_page and clean up.

With this and the previous patch the driver was able to handle a significant
percentage of errors (I set the fault injection rate to 10% and could still
download large files at a reasonable speed).

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23 01:24:59 -08:00
Stanislaw Gruszka a120e912eb iwlwifi: sanity check before counting number of tfds can be free
Check the frame control for ieee80211_is_data_qos() is true before
counting the number of tfds can be free, the tfds_in_queue only
increment when ieee80211_is_data_qos() is true before transmit; so it
should only decrement if the type match.

Remove ieee80211_is_data_qos check for frame_ctrl in tx_resp to avoid
invalid information pass from uCode.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-22 11:15:50 -05:00
Wey-Yi Guy a239a8b47c iwlwifi: error checking for number of tfds in queue
When receive reply_tx and ready to decrement the count for number of
tfds in queue, do error checking to prevent error condition and
tfds_in_queue become negative number.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-22 11:15:50 -05:00
Ben Hutchings 242cc0547f sfc: SFE4002/SFN4112F: Widen temperature and voltage tolerances
The temperature and voltage limits currently set on these boards are
too conservative and will cause the driver to stop the net device
erroneously in some systems.

Based on a review of the chip datasheets and advice from the designer
of these boards:

- Raise the maximum board temperatures to the specified maximum ambient
  temperatures for their PHYs plus the expected temperature bias of the
  board
- Raise the maximum controller temperature to 90 degrees
- Lower the minimum temperatures to 0 degrees
- Widen the voltage tolerances to at least +/- 10%

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19 15:50:35 -08:00
Ben Hutchings e0bf54c93a sfc: Fix sign of efx_mcdi_poll_reboot() error in efx_mcdi_poll()
efx_mcdi_poll() uses positive error numbers, matching the MCDI
protocol.  It must negate the result of efx_mcdi_poll_reboot() which
returns the usual negative error numbers.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19 15:50:35 -08:00
Dan Halperin 5e2f75b899 iwlwifi: set HT flags after channel in rxon
The HT extension channel settings require priv->staging_rxon.channel to be
accurate. However, iwl_set_rxon_ht was being called before iwl_set_rxon_channel
and thus HT40 could be broken unless another call to iwl_mac_config came in.

This problem was recently introduced by "iwlwifi: Fix to set correct ht
configuration"

The particular setting in which I noticed this was monitor mode:

	iwconfig wlan0 mode monitor
	ifconfig wlan0 up
	./iw wlan0 set channel 64 HT40-
	#./iw wlan0 set channel 64 HT40-
	tcpdump -i wlan0 -y IEEE802_11_RADIO

would only catch HT40 packets if I issued the IW command twice.

From visual inspection, iwl_set_rxon_channel does not depend on
iwl_set_rxon_ht, so simply swapping them should be safe and fixes this problem.

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-19 15:35:29 -05:00
Ajit Khaparde 07793d33b4 be2net: set proper value to version field in req hdr
Before sending a command to the ASIC, set version properly.
This is necessary for the ARM firmware to send correct data to the driver.
This also fixes a bug in certain skews of the ASIC where the statistics
are misreported.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 14:53:25 -08:00
Don Skidmore e86bff0eda ixgbe: fix WOL register setup for 82599
We need to have the WUS register set to all 1's in order for the hardware
to be capable of ever waking up.  Set it here in the ixgbe_probe().

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15 21:52:02 -08:00
Don Skidmore a626e8478b ixgbe: Fix - Do not allow Rx FC on 82598 at 1G due to errata
The 82598 has an erratum that receipt of pause frames at 1G
could lead to a Tx Hang.  To avoid this this patch disables
Rx FC while at 1G speed for all 82598 parts.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15 21:51:56 -08:00
David S. Miller 3d0beb921f Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-02-14 11:56:38 -08:00
Steve Hodgson 5e2a911cec sfc: Fix SFE4002 initialisation
From: Steve Hodgson <shodgson@solarflare.com>

Commit 357d46a17e "sfc: QT202x: Remove
unreliable MMD check at initialisation" broke initialisation of the
SFE4002.  efx_mdio_reset_mmd() returns a positive value rather than 0
on success.  The above commit causes this value to be propagated up
by qt202x_reset_phy(), which is treated as a failure by its callers.
Change qt202x_reset_phy() to return 0 if successful.

The PCI layer treats >0 as "fail, but please call remove() anyway",
which means that unloading the driver would cause a crash.  Add a
WARN_ON() on the failure path of efx_pci_probe() to provide early
warning if there are any other cases where we do this.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12 12:32:27 -08:00
Shanyu Zhao fafaf31bf9 iwlwifi: fix AMSDU Rx after paged Rx patch
Previous patch "use paged Rx" broke AMSDU Rx functionality. If an AP
sends out A-MSDU packets the station will crash.  Fix it by linearizing
skbuff for AMSDU packet before handing it to mac80211 since mac80211
doesn't support paged skbuff.

This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2155

Reported-by: Norbert Preining <preining@logic.at>
Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-12 14:35:05 -05:00
David S. Miller 044c18c9f5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-02-10 12:35:24 -08:00
Simon Kagstrom 3f2e8d9f13 via-velocity: Fix races on shared interrupts
This patch fixes two potential races in the velocity driver:

* Move the ACK and error handler to the interrupt handler. This fixes a
  potential race with shared interrupts when the other device interrupts
  before the NAPI poll handler has finished. As the velocity driver hasn't
  acked it's own interrupt, it will then steal the interrupt from the
  other device.

* Use spin_lock_irqsave in velocity_poll. In the current code, the
  interrupt handler will deadlock if e.g., the NAPI poll handler is
  executing when an interrupt (for another device) comes in since it
  tries to take the already held lock.

  Also unlock the spinlock only after enabling the interrupt in
  velocity_poll.

The error path is moved to the interrupt handler since this is where the
ISR is checked now.

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: Anders Grafstrom <anders.grafstrom@netinsight.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 10:55:02 -08:00
Simon Kagstrom 39c2ff43ea via-velocity: Take spinlock on set coalesce
velocity_set_coalesce touches ISR and some other sensitive registers not
covered by the rtnl lock, so take the velocity spinlock.

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 10:55:01 -08:00
Simon Kagstrom d6cade0f7f via-velocity: Remove unused IRQ status parameter from rx_srv and tx_srv
Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 10:55:01 -08:00
Jelle Martijn Kok 174b24963e rtl8187: Add new device ID
Add new RTL8187B device.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-10 13:14:09 -05:00
Roel Kluin 33a5d083e7 iwmc3200wifi: Test of wrong pointer after kzalloc in iwm_mlme_update_bss_table()
The wrong pointer was tested.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-09 14:03:34 -05:00
Sujith 6c8afef551 ath9k: Fix sequence numbers for PAE frames
Currently, PAE frames are not assigned proper sequence numbers.
Since sending PAE frames as part of aggregates breaks
crupto with several APs, they are sent as normal MPDUs.
Fix the seqeuence number issue by updating the frame with the
internal sequence number.

Tested-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-09 14:03:33 -05:00
Julia Lawall bcf4d812e6 drivers/net: Correct NULL test
Test the value that was just allocated rather than the previously tested one.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
expression *x;
expression e;
identifier l;
@@

if (x == NULL || ...) {
    ... when forall
    return ...; }
... when != goto l;
    when != x = e
    when != &x
*x == NULL
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-08 22:44:18 -08:00
Divy Le Ray 2d171886b1 cxgb3: fix GRO checksum check
Verify the HW checksum state for frames handed to GRO processing.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-08 22:37:24 -08:00
Wey-Yi Guy 098dfded5b iwlwifi: Fix to set correct ht configuration
iwl_set_rxon_ht() only get called in iwl_post_associate(); which cause
possible incorrect ht configuration. Adding the call in iwl_mac_config() if
IEEE80211_CONF_CHANGE_CHANNEL flag is set to re-configure and send rxon
command.

Fixes
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2146

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-08 16:07:22 -05:00
Alexander Duyck feeb2721a7 igb: make certain to reassign legacy interrupt vectors after reset
This change corrects an issue that will cause false hangs when using either
82575 or 82580 in legacy interrupt mode.  The issue is caused when there is
a slow traffic flow and an "ethtool -r" is executed while using legacy or
MSI interrupts.  MSI-X is not affected by this issue due to the fact that
we were already reconfiguring the vectors after reset.

If possible it would be best to push this for net-2.6 since it is resolving
a bug but if that is not possible then net-next-2.6 will be fine.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 09:49:31 -08:00
Krishna Kumar fdd3d631cd ixgbe: Fix return of invalid txq
a developer had complained of getting lots of warnings:

"eth16 selects TX queue 98, but real number of TX queues is 64"

http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg02200.html

As there was no follow up on that bug, I am submitting this
patch assuming that the other return points will not return
invalid txq's, and also that this fixes the bug (not tested).

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 19:17:17 -08:00
Anton Blanchard e44d38e1b7 ixgbe: Fix ixgbe_tx_map error path
Commit e5a43549f7 (ixgbe: remove
skb_dma_map/unmap calls from driver) looks to have introduced a bug in
ixgbe_tx_map. If we get an error from a PCI DMA call, we loop backwards
through count until it becomes -1 and return that.

The caller of ixgbe_tx_map expects 0 on error, so return that instead.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 19:17:16 -08:00
Amit Kumar Salecha e15eec2805 netxen: protect resource cleanup by rtnl lock
o context resources can be in used, while resource cleanup is in progress,
  during fw recover.
o Null pointer execption can occur in send_cmd_desc, if fw recovery
  module frees tx ring without rtnl lock.
o Same applies to ethtool register dump.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 19:15:24 -08:00
Amit Kumar Salecha 41f3e0b1f5 netxen: fix tx timeout recovery for NX2031 chip
For NX2031, first try to scrub interrupt before requesting firmware
reset. Return statement was missing after scrubbbing interrupt.

Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 19:15:24 -08:00
stephen hemminger f6815077e7 sky2: fix transmit DMA map leakage
The book keeping structure for transmit always had the flags value
cleared so transmit DMA maps were never released correctly.
Based on patch by Jarek Poplawski, problem observed by Michael Breuer.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 18:34:28 -08:00
Larry Finger b6c3f5be7c b43: Fix throughput regression
Commit c7ab5ef9bc entitled "b43: implement
short slot and basic rate handling" reduced the transmit throughput for
my BCM4311 device from 18 Mb/s to 0.7 Mb/s. The basic rate handling
portion is OK, the problem is in the short slot handling.

Prior to this change, the short slot enable/disable routines were never
called. Experimentation showed that the critical part was changing the
value at offset 0x0010 in the shared memory. This is supposed to contain
the 802.11 Slot Time in usec, but if it is changed from its initial value
of zero, performance is destroyed. On the other hand, changing the value
in the MMIO register corresponding to the Interframe Slot Time increased
performance from 18 to 22 Mb/s. A BCM4306/3 also shows dramatic
improvement of the transmit rate from 5.3 to 19.0 Mb/s.

Other changes in the patch include removal of the magic number for the
MMIO register, and allowing the slot time to be set for any PHY operating
in the 2.4 GHz band. Previously, the routine was executed only for G PHYs.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@kernel.org> [Any stable version back through 2.6.28]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-03 16:55:19 -05:00
Sathya Perla 55bdeed9f6 be2net: use eq-id to calculate cev-isr reg offset
cev-isr reg offset for each function is better calculated using (any) eq-id
alloted to that function instead of using pci-func number(which
does not work in some configurations...)

Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-02 07:48:40 -08:00
Ben Hutchings 71cc1fa9f2 cdc_ether: Partially revert "usbnet: Set link down initially ..."
Commit 37e8273cd3 ("usbnet: Set link down
initially for drivers that update link state") changed the initial link
state in cdc_ether and other drivers based on the understanding that the
devices they support generate link change interrupts.  However, this is
optional in the CDC Ethernet protocol, and two users have reported in
<http://bugzilla.kernel.org/show_bug.cgi?id=14791> that the link state
for their devices remains down.  Therefore, revert the change in
cdc_ether.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Tested-by: Avi Rozen <avi.rozen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 21:37:18 -08:00
David S. Miller d291b9af1a be2net: Fix memset() arg ordering.
Noticed by Ben Hutchings.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 21:36:21 -08:00
stephen hemminger b473946a08 bonding: bond_open error return value
The convention for API functions in kernel is to return errno value;
bond_open would return -1 if alb setup failed. The only reason that
could happen is if kmalloc() failed.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 05:55:54 -08:00
John Fastabend 3ce1cc52d2 ixgbe: if ixgbe_copy_dcb_cfg is going to fail learn about it early
Call ixgbe_copy_dcb_cfg() earlier in the ixgbe_dcbnl_set_all() so that
we can learn if this is going to fail as early as possible.  Previously,
ixgbe_down or ixgbe_close were being called before this check and the
IXGBE_RESETTING bit was being set and cleared.  Worse if this failed
the corresponding ixgbe_up/ndo_open would not called.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 05:55:54 -08:00
John Fastabend ebe1b30cd4 ixgbe: set the correct DCB bit for pg tx settings
Set the correct bit BIT_PG_TX when tx PG settings are set.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 05:55:53 -08:00
Alexander Duyck ac26d7d6ac igbvf: fix issue w/ mapped_as_page being left set after unmap
This change fixes an issue in igbvf with mapped_as_page being left set
after a page is unmapped which results in buffers which are mapped via map
single being unmapped as page.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 05:55:53 -08:00
Choi, David aeedba8bd2 drivers/net: ks8851_mll ethernet network driver
Hello David Miller,

I fix a bug in ks8851_mll driver, which has existed since 2.6.32-rc6.

>From : David J. Choi <david.choi@micrel.com>

Fix a bug that the data pointers in the interrupt handler are set wrong, which is related with the 5th parameter of request_irq().

Signed-off-by : David J. Choi <david.choi@micrel.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 05:54:49 -08:00
Ajit Khaparde 7b139c83c5 be2net: Bug fix to support newer generation of BE ASIC
Bug fix in be2net for newer generation of BladeEngine ASIC.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 05:54:18 -08:00
David S. Miller 744595c847 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-01-28 05:42:33 -08:00
Ben Hutchings c928febf4b starfire: clean up properly if firmware loading fails
netdev_open() will return without cleaning up net device or hardware state
if firmware loading fails.  This results in a BUG() on a second attempt to
bring the interface up, reported in
<http://bugzilla.kernel.org/show_bug.cgi?id=15091>, and probably has even
worse effects if the driver is removed afterwards.

Call netdev_close() to clean up on failure.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=15091

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Reported-by: Michael Moffatt <michael@moffatt.org.nz>
Tested-by: Michael Moffatt <michael@moffatt.org.nz>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-26 21:05:25 -08:00
Herbert Xu 39d3215774 virtio_net: Make delayed refill more reliable
I have seen RX stalls on a machine that experienced a suspected
OOM.  After the stall, the RX buffer is empty on the guest side
and there are exactly 16 entries available on the host side.  As
the number of entries is less than that required by a maximal
skb, the host cannot proceed.

The guest did not have a refill job scheduled.

My diagnosis is that an OOM had occured, with the delayed refill
job scheduled.  The job was able to allocate at least one skb, but
not enough to overcome the minimum required by the host to proceed.

As the refill job would only reschedule itself if it failed completely
to allocate any skbs, this would lead to an RX stall.

The following patch removes this stall possibility by always
rescheduling the refill job until the ring is totally refilled.

Testing has shown that the RX stall no longer occurs whereas
previously it would occur within a day.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-25 15:51:01 -08:00
Ben Hutchings 5a27e86bab sfc: Use fixed-size buffers for MCDI NVRAM requests
The low-level MCDI code always uses 32-bit MMIO operations, and
callers must pad input and output buffers to multiples of 4 bytes.
The MCDI NVRAM functions are not doing this.  Also, their buffers are
declared as variable-length arrays with no explicit maximum length.

Switch to a fixed buffer size based on the chunk size used by the
MTD driver (which is a multiple of 4).

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-25 15:49:59 -08:00
Guido Barzini 8704a2c8e9 sfc: Add workspace for GMAC bug workaround to MCDI MAC_STATS buffer
Due to a hardware bug in the SFC9000 family, the firmware must
transfer raw GMAC statistics to host memory before aggregating them
into the cooked (speed-independent) MAC statistics.  Extend the stats
buffer to support this.

The length of the buffer is explicit in the MAC_STATS command, so this
change is backward-compatible on both sides.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-25 15:49:19 -08:00
Breno Leitao 4f9a91c812 qlge: Only free resources if they were allocated
Currently qlge tries to release regions even if they were not allocated.
This causes messages like the following in the kernel log

Trying to free nonexistent resource <00000000006af400-00000000006af4ff>
Trying to free nonexistent resource <00003c04ff9f4000-00003c04ff9f7fff>
Trying to free nonexistent resource <00003c04ffc00000-00003c04ffcfffff>

This patch fixes the goto logic in order to not release the resources
if they were not allocated.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-25 15:46:58 -08:00
Felix Fietkau aa8bc9ef18 ath9k: fix eeprom INI values override for 2GHz-only cards
Among other changes, this commit:

   commit 06d0f0663e
   Author: Sujith <Sujith.Manoharan@atheros.com>
   Date:   Thu Feb 12 10:06:45 2009 +0530

   ath9k: Enable Fractional N mode

changed the hw attach code to fix up initialization values only for
dual band devices, however the commit message did not give a reason as
to why this would be useful or necessary.

According to tests by Jorge Boncompte, this breaks at least some
2GHz-only cards, so the code should be changed back to the
unconditional INI fixup.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reported-by: Jorge Boncompte <jorge@dti2.net>
Cc: stable@kernel.org
Tested-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-25 16:17:26 -05:00
Johannes Berg 0b5d9b2689 iwlwifi: fix pointer signedness warning
There are a few station addresses that are
char *, instead of the normal u8 *; gcc
gives pointer signedness warnings for some
of those, so use u8 * consistently.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-25 16:17:25 -05:00
stephen hemminger a40ccc6868 sky2: revert config space change
Obviously, this register had some other impact that is causing
the regression.  Either it is masking some other access or needs
to be reset in some path.

Either, way it is best to just revert the change for 2.6.33

This reverts commit 166a0fd4c7.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-24 22:37:07 -08:00