linux/drivers/net/ethernet/broadcom
Gavin Shan 6d446ec32f net/tg3: Avoid delay during MMIO access
When the EEH error is the result of a fenced host bridge, MMIO accesses
can be very slow (milliseconds) to timeout and return all 1's,
thus causing the driver various timeout loops to take way too long and
trigger soft-lockup warnings (in addition to taking minutes to recover).

It might be worthwhile to check if for any of these cases, ffffffff is
a valid possible value, and if not, bail early since that means the HW
is either gone or isolated. In the meantime, checking that the PCI channel
is offline would be workaround of the problem.

Cc: <stable@vger.kernel.org> # v3.0+
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-25 17:00:40 -07:00
..
bnx2x bnx2x: Fix bridged GSO for 57710/57711 chips 2013-06-04 17:17:08 -07:00
b44.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into mips-for-linux-next 2013-02-22 10:07:30 +01:00
b44.h b44: add 64 bit stats 2012-07-18 09:29:43 -07:00
bcm63xx_enet.c drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
bcm63xx_enet.h MIPS: BCM63XX: Move DMA descriptor definition into common header file 2012-08-30 20:15:52 +02:00
bgmac.c drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
bgmac.h bgmac: register MII bus 2013-03-07 16:28:26 -05:00
bnx2_fw.h
bnx2.c net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
bnx2.h cnic, bnx2x, bnx2: Simplify cnic probing. 2012-12-07 12:44:02 -05:00
cnic_defs.h bnx2x,cnic: use FW 7.8.2 2012-10-01 16:43:17 -04:00
cnic_if.h bnx2x, bnx2fc: Use per port max exchange resources 2013-04-25 04:06:46 -04:00
cnic.c drivers/net: rename random32() to prandom_u32() 2013-05-07 18:38:27 -07:00
cnic.h cnic: Include bnx2x.h 2012-12-07 12:44:02 -05:00
Kconfig bgmac: driver for GBit MAC core on BCMA bus 2013-01-09 23:37:03 -08:00
Makefile bgmac: driver for GBit MAC core on BCMA bus 2013-01-09 23:37:03 -08:00
sb1250-mac.c drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
tg3.c net/tg3: Avoid delay during MMIO access 2013-06-25 17:00:40 -07:00
tg3.h tg3: Add read dma workaround for 5720 2013-06-04 17:25:18 -07:00