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Maciej W. Rozycki 963267bc5d declance: Restore tx descriptor ring locking 
A driver overhaul on 29 Feb 2000 (!) broke locking around fiddling with 
the tx descriptor ring in start_xmit(); a follow-on "fix" removed the 
broken remnants altogether.  Here's a patch to restore proper locking in 
the function -- the complement in the interrupt handler has been correct 
all the time.

 This *may* have been the reason for the occasional confusion of the chip 
-- triggering a tx timeout followed by a chip reset sequence -- seen on 
R4k-based DECstations with the onboard Ethernet interface.  Another theory 
is the confusion is due to an unindentified problem -- perhaps a silicon 
erratum -- associated with the variation of the MT ASIC used to interface 
the R4k CPU to the rest of the system on these computers; with its 
aggressive write-back buffering the design is particularly weakly ordered 
when it comes to MMIO (in the absence of ordering barriers uncached reads 
are allowed to bypass earlier uncached writes, even if to the same 
location), which may trigger all kinds of corner cases in peripheral 
hardware as well as software.

Either way this piece of code is buggy.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2009-06-08 02:42:35 -07:00
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accessibility
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acpi Merge branches 'release', 'bugzilla-13032', 'bugzilla-13041+', 'bugzilla-13121', 'bugzilla-13165', 'bugzilla-13243', 'bugzilla-13259', 'resume-sci-en-regression', 'thermal-regression', 'tsc-regression' and 'asus-2.6.30' into release 2009-05-16 01:55:59 -04:00
amba
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ata libata: Media rotation rate and form factor heuristics 2009-05-15 14:14:56 -04:00
atm Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n) 2009-04-13 15:04:33 -07:00
auxdisplay
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base Revert driver core: move platform_data into platform_device 2009-05-08 19:22:21 -07:00
block aoe: Remove superfluous clearing of skb fields in new_skb(). 2009-05-27 17:09:44 -07:00
bluetooth
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cdrom
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char sysrq, intel_fb: fix sysrq g collision 2009-05-15 07:56:24 -05:00
clocksource clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
connector
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cpufreq
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cpuidle
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crypto dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
dca
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dio
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dma dma: fix ipu_idmac.c to not discard the last queued buffer 2009-05-12 14:41:48 -07:00
edac edac: ppc mpc85xx fix mc err detect 2009-04-21 13:41:51 -07:00
eisa
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firewire
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firmware ibft: fix the display of a few fields in the NIC attribute structure in sysfs 2009-05-02 15:36:10 -07:00
gpio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
gpu Merge branches 'release', 'bugzilla-13032', 'bugzilla-13041+', 'bugzilla-13121', 'bugzilla-13165', 'bugzilla-13243', 'bugzilla-13259', 'resume-sci-en-regression', 'thermal-regression', 'tsc-regression' and 'asus-2.6.30' into release 2009-05-16 01:55:59 -04:00
hid HID: add NOGET quirk for devices from CH Products 2009-05-11 17:09:21 +02:00
hwmon hwmon: (w83781d) Fix W83782D support (NULL pointer dereference) 2009-05-08 20:27:28 +02:00
i2c Merge branch 'i2c-for-2630-rc5' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-05-12 11:21:51 -07:00
ide piix: The Sony TZ90 needs the cable type hardcoding 2009-05-16 19:03:36 +02:00
idle dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
ieee1394 dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
infiniband net: skb->dst accessors 2009-06-03 02:51:04 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-05-12 11:21:24 -07:00
isdn isdn: prevent NULL ptr Oops in capi_cmsg2str() 2009-06-08 00:45:51 -07:00
leds leds: just ignore invalid GPIOs in leds-gpio 2009-04-08 14:13:48 +01:00
lguest lguest: fix guest crash on non-linear addresses in gdt pvops 2009-04-19 23:14:01 +09:30
macintosh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-04-24 08:16:05 -07:00
mca
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md md: remove rd%d links immediately after stopping an array. 2009-05-07 12:51:06 +10:00
media V4L/DVB (11680): cafe_ccic: use = instead of == for setting a value at a var 2009-05-09 18:54:32 -03:00
memstick dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
message scsi: mpt: suppress debugobjects warning 2009-04-21 13:41:50 -07:00
mfd mfd: fix da903x warning 2009-04-05 00:32:25 +02:00
misc isl29003: fix resume functionality 2009-05-06 16:36:10 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2009-05-05 08:23:16 -07:00
mtd Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
net declance: Restore tx descriptor ring locking 2009-06-08 02:42:35 -07:00
nubus
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of openfirmware: Add OF phylib support code 2009-04-27 02:53:47 -07:00
oprofile Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-04-05 11:04:19 -07:00
parisc parport: Fix various uses of parport_pc 2009-04-14 08:48:50 -07:00
parport parport: Use the PCI IRQ if offered 2009-04-07 08:44:06 -07:00
pci Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-05-18 21:08:20 -07:00
pcmcia [ARM] 5458/1: pcmcia: pxa2xx-sharpsl: check if we do have Scoop config 2009-04-23 23:25:40 +01:00
platform rfkill: rewrite 2009-06-03 14:06:13 -04:00
pnp ACPI: suspend: don't let device _PS3 failure prevent suspend 2009-05-08 00:22:29 -04:00
power Merge git://git.infradead.org/battery-2.6 2009-04-08 17:45:02 -07:00
ps3
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rapidio dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
regulator regulator: Fix default constraints for fixed voltage regulators 2009-04-28 18:58:08 +01:00
rtc rtc: rtc-twl4030 don't mask alarm interrupts on suspend 2009-05-12 14:11:35 -07:00
s390 net: skb->dst accessors 2009-06-03 02:51:04 -07:00
sbus sbus: changed ioctls to unlocked 2009-04-14 19:46:19 -07:00
scsi net: convert unicast addr list 2009-05-29 22:12:32 -07:00
serial Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-05-18 21:08:20 -07:00
sh sh: intc: Added resume from hibernation support to the intc 2009-04-06 08:55:19 -07:00
sn dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
spi pxa2xx_spi: prevent panic case setup() fails 2009-05-12 14:11:34 -07:00
ssb
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staging Staging: agnx: switch config_interface to bss_info_changed 2009-05-20 14:46:30 -04:00
tc
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telephony
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thermal thermal: fix off-by-1 error in trip point trigger condition 2009-05-14 13:40:53 -04:00
uio UIO: fix specific device driver missing statement for depmod 2009-04-16 16:17:11 -07:00
usb usb: gadget: f_phonet: fix memory allocation sizes 2009-06-02 00:17:46 -07:00
uwb dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
video MIPS: gbe: Make needlessly global symbols static in drivers/video/gbefb.c 2009-05-14 13:50:25 +01:00
virtio virtio: fix suspend when using virtio_balloon 2009-04-19 23:14:01 +09:30
w1 mfd: remove DS1WM clock handling 2009-04-05 00:32:22 +02:00
watchdog [ARM] 5460/1: Orion: reduce namespace pollution 2009-04-23 23:25:41 +01:00
xen [IA64] xen_domu_defconfig: fix build issues/warnings 2009-05-05 11:43:13 -07:00
zorro
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Kconfig
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Makefile V4L/DVB (11561a): move media after i2c 2009-04-29 15:41:13 -03:00