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linux-stable/drivers/net/ethernet
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Sebastian Siewior a11fbba9a7 net/cpsw: fix irq_disable() with threaded interrupts 
During high throughput it is likely that we receive both: an RX and TX
interrupt. The normal behaviour is that once we enter the ISR the
interrupts are disabled in the IRQ chip and so the ISR is invoked only
once and the interrupt line is disabled once. It will be re-enabled
after napi completes.
With threaded interrupts on the other hand the interrupt the interrupt
is disabled immediately and the ISR is marked for "later". By having TX
and RX interrupt marked pending we invoke them both and disable the
interrupt line twice. The napi callback is still executed once and so
after it completes we remain with interrupts disabled.

The initial patch simply removed the cpsw_{enable|disable}_irq() calls
and it worked well on my AM335X ES1.0 (beagle bone). On ES2.0 (beagle
bone black) it caused an never ending interrupt (even after the mask via
cpsw_intr_disable()) according to Mugunthan V N. Since I don't have the
ES2.0 and no idea what is going on this patch tracks the state of the
irq_disable() call and execute it only when not yet done.
The book keeping is done on the first struct since with dual_emac we can
have two of those and only one interrupt line.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-25 04:13:18 -04:00
..
3com net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
8390 net: ax88796: avoid 64 bit arithmetic 2013-04-19 17:57:48 -04:00
adaptec net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
adi drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
aeroflex drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
alteon net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
amd net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
apple drivers:net: Remove dma_alloc_coherent OOM messages 2013-03-15 08:56:58 -04:00
atheros net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
broadcom bnx2x, bnx2fc: Use per port max exchange resources 2013-04-25 04:06:46 -04:00
brocade net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
cadence net/macb: fix error return code in macb_probe() 2013-04-15 14:09:37 -04:00
calxeda net: calxedaxgmac: fix condition in xgmac_set_features() 2013-04-25 03:50:17 -04:00
chelsio net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
cirrus cirrus: cs89x0: remove two obsolete Kconfig macros 2013-03-29 15:40:24 -04:00
cisco net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
davicom Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-01 13:36:50 -04:00
dec Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-03-20 12:46:26 -04:00
dlink drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
emulex Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
faraday net: ftgmac100: Use module_platform_driver() 2013-03-18 13:02:37 -04:00
freescale net: fec: Enable imx6 enet checksum acceleration. 2013-04-25 03:58:26 -04:00
fujitsu drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
hp
i825xx drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
ibm net: Fix vlan bitmask changes in EHEA driver. 2013-04-22 19:34:34 -04:00
icplus
intel igb: Bump version of driver 2013-04-24 20:47:48 -07:00
marvell Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
mellanox net/mlx4_en: Add a service task 2013-04-24 16:30:14 -04:00
micrel ks8851: Remove unneeded PM_OPS definitions 2013-04-16 16:30:51 -04:00
microchip net: ethernet: enc28j60: use spi_get_drvdata() and spi_set_drvdata() 2013-04-07 16:48:19 -04:00
myricom net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
natsemi net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
neterion net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
nuvoton drivers:net: Remove dma_alloc_coherent OOM messages 2013-03-15 08:56:58 -04:00
nvidia net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
nxp net/nxp/lpc_eth: Drop ifdef CONFIG_OF_NET 2013-04-02 16:43:56 -04:00
octeon
oki-semi pch_gbe: minor: report the actual error on MTU change 2013-04-16 16:43:35 -04:00
packetengines
pasemi drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
qlogic qlcnic: Update version to 5.2.42 2013-04-24 19:34:06 -04:00
rdc drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
realtek net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
renesas net: vlan: prepare for 802.1ad VLAN filtering offload 2013-04-19 14:45:27 -04:00
seeq drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
sfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-03-20 12:46:26 -04:00
sgi drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
silan
sis sis900: check for DMA map errors 2013-04-15 14:11:37 -04:00
smsc net/smsc911x: Use NULL instead of integer for pointer 2013-03-19 10:20:27 -04:00
stmicro Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
sun net: add ETH_P_802_3_MIN 2013-03-28 01:20:42 -04:00
tehuti net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
ti net/cpsw: fix irq_disable() with threaded interrupts 2013-04-25 04:13:18 -04:00
tile
toshiba net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_* 2013-04-19 14:45:26 -04:00
tundra drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
via net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
wiznet net: ethernet: wiznet: add CONFIG_PM_SLEEP to suspend/resume functions 2013-03-26 12:47:17 -04:00
xilinx net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_* 2013-04-19 14:45:26 -04:00
xircom drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
xscale
dnet.c
dnet.h
ethoc.c
fealnx.c
jme.c net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
jme.h
Kconfig
korina.c
lantiq_etop.c lantiq_etop: use free_netdev(netdev) instead of kfree() 2013-03-21 11:50:10 -04:00
Makefile
netx-eth.c drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb 2013-03-09 16:09:19 -05:00
s6gmac.c s6gmac: fix error return code in s6gmac_probe() 2013-03-22 10:23:42 -04:00