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Jordan Crouse 95563d343f [PATCH] scx200_acb: Fix for the CS5535 errata 
This is a fix for the CS5535 errata 111:

When the SMBus controller tries to access a non-existing device, it sets
the NEGACK bit, SMBus I/O offset 01h[4], to 1 after it detects no
acknowledge at the ninth clock.  The specification states that the bit
can be cleared by writing a 1 to it, but under certain circumstances it
is possible for this bit to not clear.

Writing a 0 to the bit resets the internal state machine and clears the
issue.

Since all writable bits in ACBST are W1C bits (write-one-to-clear) the
second write doesn't affect any other logic except the buggy NEGACK
state machine. The second write clears an internal register which is
responsible for "overwriting" the NEGACK bit in ACBST.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-05-09 13:04:21 -07:00
..
acorn
acpi [PATCH] x86_64: Support memory hotadd without sparsemem 2006-04-09 11:53:16 -07:00
amba
atm [PATCH] Replace 0xff.. with correct DMA_xBIT_MASK 2006-03-28 09:16:07 -08:00
base [CLASS DEVICE]: add attribute_group creation 2006-05-06 17:55:11 -07:00
block [PATCH] powerpc: Use check_legacy_ioport() on ppc32 too. 2006-04-28 21:04:55 +10:00
bluetooth [PATCH] pcmcia: use bitfield instead of p_state and state 2006-03-31 17:26:33 +02:00
cdrom [PATCH] Overrun in cdrom/aztcd.c 2006-04-11 06:18:46 -07:00
char [PATCH] genrtc: fix read on 64-bit platforms 2006-05-01 18:17:47 -07:00
connector
cpufreq [PATCH] x86_64: Move ondemand timer into own work queue 2006-05-08 09:34:56 -07:00
crypto
dio [PATCH] hp300: fix driver_register() return handling, remove dio_module_init() 2006-03-25 08:22:53 -08:00
edac [PATCH] EDAC Coexistence with BIOS 2006-05-03 20:05:41 -07:00
eisa [PATCH] EISA: Ignore generated file drivers/eisa/devlist.h 2006-03-25 08:23:01 -08:00
fc4
firmware [PATCH] DMI: move dmi_scan.c from arch/i386 to drivers/firmware/ 2006-04-14 11:41:25 -07:00
hwmon [PATCH] w83792d: Be quiet on misdetection 2006-04-14 11:18:33 -07:00
i2c [PATCH] scx200_acb: Fix for the CS5535 errata 2006-05-09 13:04:21 -07:00
ide [PATCH] alim15x3: ULI M-1573 south Bridge support 2006-04-19 09:13:53 -07:00
ieee1394 [PATCH] sbp2: fix spinlock recursion 2006-04-02 12:58:09 -07:00
infiniband IB/ipath: tidy up white space in a few files 2006-05-01 12:14:23 -07:00
input Merge master.kernel.org:/home/rmk/linux-2.6-arm 2006-05-04 14:52:43 -07:00
isdn [PATCH] isdn4linux: Siemens Gigaset base driver: fix disconnect handling 2006-04-22 09:19:52 -07:00
leds [PATCH] leds: reorganise Kconfig 2006-04-11 06:18:40 -07:00
macintosh [PATCH] powerpc: fix oops in alsa powermac driver 2006-04-21 22:34:26 +10:00
mca
md [PATCH] md: Fix 'rdev->nr_pending' count when retrying barrier requests 2006-05-01 18:17:42 -07:00
media [ALSA] add __devinitdata to all pci_device_id 2006-04-27 21:10:34 +02:00
message [SCSI] mptfusion - fix panic in mptsas_slave_configure 2006-04-14 09:35:12 -05:00
mfd
misc [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
mmc [MMC] Move set_ios debugging into mmc.c 2006-05-04 18:22:51 +01:00
mtd [PATCH] Remove blkmtd 2006-04-11 06:18:43 -07:00
net [IRDA] irda-usb: use NULL instead of 0 2006-05-06 18:34:10 -07:00
nubus
oprofile [PATCH] mark f_ops const in the inode 2006-03-28 09:16:05 -08:00
parisc [PARISC] Document that we tolerate "Relaxed Ordering" 2006-04-21 22:20:33 +00:00
parport [PATCH] parport_pc: fix section mismatch warnings (v2) 2006-04-19 09:13:52 -07:00
pci [PATCH] PCI quirk: VIA IRQ fixup should only run for VIA southbridges 2006-04-27 13:00:51 -07:00
pcmcia [PATCH] request_irq(): remove warnings from irq probing 2006-04-28 08:33:46 -07:00
pnp [PATCH] pnp: fix two messages in manager.c 2006-04-19 09:13:52 -07:00
rapidio
rtc [ARM] rtc-sa1100: fix compiler warnings and error cleanup 2006-05-06 11:29:21 +01:00
s390 [PATCH] s390: fix ipd handling 2006-05-01 18:17:46 -07:00
sbus
scsi [SCSI] advansys driver: limp along on x86 2006-04-29 14:27:13 -07:00
serial Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2006-05-04 15:09:52 -07:00
sh
sn [PATCH] Altix: correct ioc4 port order 2006-05-03 20:05:41 -07:00
spi
tc
telephony [PATCH] pcmcia: use bitfield instead of p_state and state 2006-03-31 17:26:33 +02:00
usb [PATCH] USB: ftdi_sio: add support for ASK RDR 400 series card reader 2006-04-27 10:28:59 -07:00
video Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2006-05-08 09:10:44 -07:00
w1
zorro [PATCH] amiga: fix driver_register() return handling, remove zorro_module_init() 2006-03-25 08:22:53 -08:00
Kconfig [IA64] IOC4 config option ordering 2006-04-21 10:59:00 -07:00
Makefile Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 2006-04-02 12:51:22 -07:00