Commit Graph

372 Commits

Author SHA1 Message Date
Michael Chan
5ae482e01d bnx2: Update version to 2.0.17.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-19 20:30:07 -07:00
Michael Chan
11848b9647 bnx2: Remove some unnecessary smp_mb() in tx fast path.
smp_mb() inside bnx2_tx_avail() is used twice in the normal
bnx2_start_xmit() path (see illustration below).  The full memory
barrier is only necessary during race conditions with tx completion.
We can speed up the tx path by replacing smp_mb() in bnx2_tx_avail()
with a compiler barrier.  The compiler barrier is to force the
compiler to fetch the tx_prod and tx_cons from memory.

In the race condition between bnx2_start_xmit() and bnx2_tx_int(),
we have the following situation:

bnx2_start_xmit()                       bnx2_tx_int()
    if (!bnx2_tx_avail())
            BUG();

    ...

    if (!bnx2_tx_avail())
            netif_tx_stop_queue();          update_tx_index();
            smp_mb();                       smp_mb();
            if (bnx2_tx_avail())            if (netif_tx_queue_stopped() &&
                    netif_tx_wake_queue();      bnx2_tx_avail())

With smp_mb() removed from bnx2_tx_avail(), we need to add smp_mb() to
bnx2_start_xmit() as shown above to properly order netif_tx_stop_queue()
and bnx2_tx_avail() to check the ring index.  If it is not strictly
ordered, the tx queue can be stopped forever.

This improves performance by about 5% with 2 ports running bi-directional
64-byte packets.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-19 20:30:06 -07:00
Michael Chan
379b39a2ad bnx2: Call pci_enable_msix() with actual number of vectors.
Based on original patch by Breno Leitão <leitao@linux.vnet.ibm.com>.

Allocate the actual number of vectors and make use of fewer vectors
if pci_enable_msix() returns > 0.  We must allocate one additional
vector for the cnic driver.

Cc: Breno Leitão <leitao@linux.vnet.ibm.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-19 20:30:06 -07:00
Michael Chan
6fdae99555 bnx2: Use proper counter for net_device_stats->multicast.
We were using the wrong tx multicast counter instead of the rx multicast
counter.

Reported-by: Peter Snellman <peter.snellman@cinnober.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-19 20:30:05 -07:00
Stanislaw Gruszka
36227e88c2 bnx2: use device model DMA API
Use DMA API as PCI equivalents will be deprecated. This change also allow
to allocate with GFP_KERNEL in some places.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-18 14:42:48 -07:00
Stanislaw Gruszka
a2df00aa33 bnx2: allocate with GFP_KERNEL flag on RX path init
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-18 14:42:48 -07:00
Eric Dumazet
5d07bf2647 bnx2: 64 bit stats on all arches
Now core network is able to handle 64 bit netdevice stats on 32 bit
arches, we can provide them for bnx2, since hardware maintains some 64
bit counters.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-08 23:12:27 -07:00
Michael Chan
e5a0c1fd15 bnx2: Update version to 2.0.16.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-04 11:44:01 -07:00
Michael Chan
5804a8fbb8 bnx2: Dump some config space registers during TX timeout.
These config register values will be useful when the memory registers
are returning 0xffffffff which has been reported.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-04 11:44:00 -07:00
Michael Chan
fdc8541d69 bnx2: Add support for skb->rxhash.
Add skb->rxhash support for TCP packets only because the bnx2 RSS hash
does not hash UDP ports.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-04 11:44:00 -07:00
Michael Chan
3d5f3a7bbd bnx2: Always enable MSI-X on 5709.
Minor change to use MSI-X even if there is only one CPU.  This allows
the CNIC driver to always have a dedicated MSI-X vector to handle
iSCSI events, instead of sharing the MSI vector.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-04 11:43:59 -07:00
David S. Miller
8244132ea8 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/ipv4/ip_output.c
2010-06-23 18:26:27 -07:00
FUJITA Tomonori
aabef8b240 bnx2: fix dma_get_ops compilation breakage
This removes dma_get_ops() prefetch optimization in bnx2.

bnx2 uses dma_get_ops() to see if dma_sync_single_for_cpu() is
noop. bnx2 does prefetch if it's noop.

But dma_get_ops() isn't available on all the architectures (only the
architectures that uses dma_map_ops struct have it). Using
dma_get_ops() in drivers leads to compilation breakage on many
architectures.

This patch removes dma_get_ops() and changes bnx2 to do prefetch on
all the architectures. This adds useless prefetch on non-coherent
architectures but this is harmless. It is also unlikely to cause the
performance drop.

[ Remove now unused local variable 'pdev' -DaveM ]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-17 08:56:05 -07:00
Michael Chan
cbd6890c59 bnx2: Fix compiler warning in bnx2_disable_forced_2g5().
drivers/net/bnx2.c: In function 'bnx2_disable_forced_2g5':
drivers/net/bnx2.c:1489: warning: 'bmcr' may be used uninitialized in this function

We fix it by checking return values from all bnx2_read_phy() and proceeding
to do read-modify-write only if the read operation is successful.

The related bnx2_enable_forced_2g5() is also fixed the same way.

Reported-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-11 18:37:07 -07:00
Michael Chan
f048fa9c86 bnx2: Fix hang during rmmod bnx2.
The regression is caused by:

commit 4327ba435a
    bnx2: Fix netpoll crash.

If ->open() and ->close() are called multiple times, the same napi structs
will be added to dev->napi_list multiple times, corrupting the dev->napi_list.
This causes free_netdev() to hang during rmmod.

We fix this by calling netif_napi_del() during ->close().

Also, bnx2_init_napi() must not be in the __devinit section since it is
called by ->open().

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-02 02:26:40 -07:00
Michael Chan
a0ba676008 bnx2: Use netif_carrier_off() to prevent timeout.
Based on original patch from Stanislaw Gruszka <sgruszka@redhat.com>.

Using netif_carrier_off() is better than updating all the ->trans_start
on all the tx queues.

netif_carrier_off() needs to be called after bnx2_disable_int_sync()
to guarantee no race conditions with the serdes timers that can
modify the carrier state.

If the chip or phy is reset, carrier will turn back on when we get the
link interrupt.  If there is no reset, we need to turn carrier back on
in bnx2_netif_start().  Again, the phy_lock prevents race conditions with
the serdes timers.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17 17:34:43 -07:00
Michael Chan
a931d29404 bnx2: Update 5709 MIPS firmware and version to 2.0.15.
New firmware fixes a performance regression on small packets.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17 17:33:31 -07:00
Eddie Wai
b98eba5278 bnx2: Fix register printouts during NETEV_WATCHDOG.
Dump the correct MCP registers and add EMAC_RX_STATUS register during
NETDEV_WATCHDOG for debugging.

Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17 17:32:56 -07:00
Michael Chan
a33fa66bcf bnx2: Add prefetches to rx path.
Add prefetches of the skb and the next rx descriptor to speed up rx path.

Use prefetchw() for the skb [suggested by Eric Dumazet].

The rx descriptor is in skb->data which is mapped for streaming mode DMA.
Eric Dumazet pointed out that we should not prefetch the data before
dma_sync.  So we prefetch only if dma_sync is no_op on the system.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-06 22:17:24 -07:00
Michael Chan
c67938a9e0 bnx2: Add GRO support.
And turn on NETIF_F_GRO by default [requested by DaveM].

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-06 22:17:23 -07:00
David S. Miller
7ef527377b Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-05-02 22:02:06 -07:00
Michael Chan
587611d6e4 bnx2: Update version to 2.0.9.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-27 14:38:16 -07:00
Michael Chan
212f9934af bnx2: Prevent "scheduling while atomic" warning with cnic, bonding and vlan.
The bonding driver calls ndo_vlan_rx_register() while holding bond->lock.
The bnx2 driver calls bnx2_netif_stop() to stop the rx handling while
changing the vlgrp.  The call also stops the cnic driver which sleeps
while the bond->lock is held and cause the warning.

This code path only needs to stop the NAPI rx handling while we are
changing the vlgrp.  Since no reset is going to occur, there is no need
to stop cnic in this case.  By adding a parameter to bnx2_netif_stop()
to skip stopping cnic, we can avoid the warning.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-27 14:38:16 -07:00
Michael Chan
c441b8d2cb bnx2: Fix lost MSI-X problem on 5709 NICs.
It has been reported that under certain heavy traffic conditions in MSI-X
mode, the driver can lose an MSI-X vector causing all packets in the
associated rx/tx ring pair to be dropped.  The problem is caused by
the chip dropping the write to unmask the MSI-X vector by the kernel
(when migrating the IRQ for example).

This can be prevented by increasing the GRC timeout value for these
register read and write operations.

Thanks to Dell for helping us debug this problem.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-27 14:38:15 -07:00
FUJITA Tomonori
1a4ccc2d46 bnx2: use the dma state API instead of the pci equivalents
The DMA API is preferred.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-07 21:05:35 -07:00
David S. Miller
4a35ecf8bf Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/bonding/bond_main.c
	drivers/net/via-velocity.c
	drivers/net/wireless/iwlwifi/iwl-agn.c
2010-04-06 23:53:30 -07:00
Jiri Pirko
22bedad3ce net: convert multicast list to list_head
Converts the list and the core manipulating with it to be the same as uc_list.

+uses two functions for adding/removing mc address (normal and "global"
 variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
 manipulation with lists on a sandbox (used in bonding and 80211 drivers)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03 14:22:15 -07:00
Michael Chan
1bf1e347ef bnx2: Use proper handler during netpoll.
Netpoll needs to call the proper handler depending on the IRQ mode
and the vector.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-23 23:19:56 -07:00
Benjamin Li
4327ba435a bnx2: Fix netpoll crash.
The bnx2 driver calls netif_napi_add() for all the NAPI structs during
->probe() time but not all of them will be used if we're not in MSI-X
mode.  This creates a problem for netpoll since it will poll all the
NAPI structs in the dev_list whether or not they are scheduled, resulting
in a crash when we access structure fields not initialized for that vector.

We fix it by moving the netif_napi_add() call to ->open() after the number
of IRQ vectors has been determined.

Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-23 23:19:55 -07:00
Matt Carlson
df25bc38b5 bnx2: Remove now useless VPD code
Now that the VPD searching code is abstracted away, the outer loop used
to detect the read-only large resource data type section is useless.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:33 -08:00
Matt Carlson
4067a8541d pci: Add helper to search for VPD keywords
This patch adds the pci_vpd_find_info_keyword() helper function to
find information field keywords within read-only and read-write large
resource data type sections.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:33 -08:00
Matt Carlson
e1d5bdabb9 pci: Add VPD information field helper functions
This patch adds a preprocessor constant to describe the PCI VPD
information field header size and an inline function to extract the
size of the information field itself.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:32 -08:00
Matt Carlson
b55ac1b226 pci: Add helper to find a VPD resource data type
This patch adds the pci_vpd_find_tag() helper function to find VPD
resource data types in a buffer.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:32 -08:00
Matt Carlson
7ad506fa1a pci: Add large and small resource data type code
This patch introduces more VPD preprocessor definitions to identify some
small and large resource data type item names.  The patch then continues
to correct how the tg3 and bnx2 drivers search for the "read-only data"
large resource data type.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:31 -08:00
Matt Carlson
a2ce766238 pci: Add PCI LRDT tag size and section size
This patch adds a preprocessor constant to describe the PCI VPD large
resource data type tag size and an inline function to extract the large
resource section size from the large resource data type tag.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-28 00:43:30 -08:00
Jiri Pirko
0ddf477b8a net: convert multiple drivers to use netdev_for_each_mc_addr, part3
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-22 15:45:51 -08:00
Joe Perches
3a9c6a4915 drivers/net/bnx2.c: Use (pr|netdev|netif)_<level> macro helpers
Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Remove #define PFX
Use pr_<level>
Use netdev_<level>
Use netif_<level>
Remove periods from formats
Coalesce long formats
Coalesce some printks

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-17 17:45:19 -08:00
Michael Chan
bec92044b7 bnx2: Update firmwares and update version to 2.0.8.
- Increase FTQ depth to 256 to ehnabce performance.
- Fix RV2P context corruption on 5709 when flow control is enabled.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 15:19:42 -08:00
Patrick Rabau
c9885fe5a7 bnx2: Fix bug when saving statistics.
This fixes the problem of dropping the carry when adding 2 32-bit values.
Switch to use array indexing for better readability.

Reported by and fix provided by Patrick Rabau.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 15:19:04 -08:00
Michael Chan
beb499afe3 bnx2: Allow user-specified multiple advertisement speed values.
Remove unnecessary code that works around older versions of ethtool
that can pass down invalid advertisement speed values.  This old
code prevents the user from specifying multiple advertisement values.
The new code uses simple masking to mask out invalid advertisment bits.

Reported-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 15:19:04 -08:00
Michael Chan
5726026bff bnx2: Adjust flow control water marks.
The current water marks are too high and can cause unnecessary flow
control frames.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 15:19:03 -08:00
Michael Chan
e9f26c49ce bnx2: Need to call cnic_setup_cnic_irq_info() after MTU change.
New status blocks are allocated during MTU change so we need to
update this information for the cnic driver.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 15:19:02 -08:00
Michael Chan
efde73a35c bnx2: Check BNX2_FLAG_USING_MSIX flag when setting up MSIX.
Checking the flag is more correct than checking bp->irq_nvecs. By
accident it is not a problem because we always have more than 1
vectors when using MSIX mode.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 15:19:02 -08:00
Jiri Pirko
4cd24eaf0c net: use netdev_mc_count and netdev_mc_empty when appropriate
This patch replaces dev->mc_count in all drivers (hopefully I didn't miss
anything). Used spatch and did small tweaks and conding style changes when
it was suitable.

Jirka

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12 11:38:58 -08:00
Alexey Dobriyan
257ddbdad1 netdev: remove HAVE_ leftovers
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 06:01:35 -08:00
Jiri Pirko
32e7bfc411 net: use helpers to access uc list V2
This patch introduces three macros to work with uc list from net drivers.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-25 13:36:10 -08:00
Michael Chan
354fcd7774 bnx2: Save statistics during reset.
MTU changes, ring size changes, etc cause the chip to be reset and the
statisctics flushed.  To keep track of the accumulated statistics, we
add code to save the whole statistics block before reset.  We also
modify the macros and statistics functions to return the sum of the
saved and current counters.

Based on original patch by Breno Leitao <leitao@linux.vnet.ibm.com>

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-17 19:16:03 -08:00
Michael Chan
a47430583d bnx2: Refine statistics code.
Refine the statistics macros by passing in just the name of the
counter field.  This makes it a lot easier and cleaner to add
counters saved before the last reset in the next patch.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-17 19:16:02 -08:00
Benjamin Li
e2eb8e3859 bnx2: Flush the register writes which setup the MSI-X table
The MSI-X table size needs to be properly set before pci_enable_msix()
is called.  But on certain machines, the writes are delayed and the
MSI-X table size is incorrectly read.  By reading the
BNX2_PCI_MSIX_CONTROL register, the writes are flushed and now
ensure that the MSI-X table is set correctly before MSI-X
is enable on the device.

This patch was originally diagnosed and authored by
Kalyan Ram Chintalapati <kalyanc@vmware.com>.

Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Kalyan Ram Chintalapati <kalyanc@vmware.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-08 00:51:21 -08:00
Michael Chan
b746656069 bnx2: Fix bnx2_netif_stop() merge error.
The error was introduced while merging:

commit 4529819c45
bnx2: reset_task is crashing the kernel. Fixing it.

Signed-off-by: Michael Chan <mchan@broadcom.com>k
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-20 18:40:18 -08:00