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2cf3683472
kernel_optimize_test/drivers
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Yi Li 2cf3683472 Blackfin SPI Driver: fix bug - spi controller driver does not assert/deassert CS correctly 
This bug can be observed when two SPI devices are sharing the spi bus: One
device is set as SPI CS 7, another one is using SPI CS 4.

In spi_bfin5xx.c: cs_active(), cs_deactive() are used to control SPI_FLG
register.  From the debug bellow:

cs_active: flag: 0x7f91, chip->flag: 0x7f80, cs: 7
cs_active: flag: 0xef91, chip->flag: 0xef10, cs: 4

When device A (cs_7) activate CS 7, SPI_FLG is set as 0x7f91 (however,
SPI_FLG should be set as 0x7f80, or 0x6f91 if in broadcast mode).

Due to some HW bug (very possibly), if SPI_FLG is set as 0x7f91, SPISSEL7
is asserted, however SPISSEL4 will be asserted too (I can see this using
the scope).  This is unreasonable according to HRM.

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:06 -07:00
..
accessibility
acpi ACPI: processor: use .notify method instead of installing handler directly 2009-04-05 02:25:07 -04:00
amba
ata
atm
auxdisplay
base Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask 2009-04-05 10:33:07 -07:00
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/linux-hdreg-h-cleanup 2009-04-03 09:02:32 -07:00
bluetooth
cdrom
char esp: fix section mismatch warning 2009-04-07 08:31:03 -07:00
clocksource
connector
cpufreq
cpuidle
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2009-04-03 09:45:53 -07:00
dca
dio
dma Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2009-04-03 12:13:45 -07:00
edac edac: AMD8111 driver Kconfig & Makefile 2009-04-02 19:05:04 -07:00
eisa
firewire
firmware
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 branch 'linus' into release 2009-04-05 02:14:15 -04:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2009-04-03 15:25:44 -07:00
hwmon hwmon: add support for GMT G760A fan speed PWM controller 2009-04-07 08:31:03 -07:00
i2c i2c: Delete unused i2c-algo-sgi helper module 2009-04-06 18:12:25 +02:00
ide
idle
ieee1394
infiniband
input Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-04-05 11:15:54 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-04-06 18:05:43 -07:00
leds leds: introduce lp5521 led driver 2009-04-06 16:06:27 +01:00
lguest
macintosh
mca
md md/raid1: fix build breakage 2009-04-06 14:40:07 -07:00
media cx231xx: Convert to snd_card_create() 2009-04-06 21:44:53 -03:00
memstick
message [SCSI] mptsas: remove unneeded check 2009-04-03 09:23:10 -05:00
mfd mfd: fix da903x warning 2009-04-05 00:32:25 +02:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2009-04-05 10:18:21 -07:00
mtd Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6 2009-04-06 15:00:00 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-04-06 18:05:43 -07:00
nubus
of
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 parport: netmos 9845 & 9855 1P4S fixes 2009-04-02 19:05:04 -07:00
pci PCI: Fix oops in pci_vpd_truncate 2009-04-07 08:05:38 -07:00
pcmcia
platform Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
pnp Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
power Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
ps3
rapidio
regulator
rtc Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-04-05 11:15:54 -07:00
s390 workqueue: add to_delayed_work() helper function 2009-04-02 19:04:50 -07:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-04-06 13:24:49 -07:00
serial Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2009-04-07 07:40:55 -07:00
sh
sn
spi Blackfin SPI Driver: fix bug - spi controller driver does not assert/deassert CS correctly 2009-04-07 08:31:06 -07:00
ssb
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 2009-04-05 11:06:45 -07:00
tc
telephony
thermal
uio
usb symbol: Remove various bits of left over junk 2009-04-06 14:36:42 -07:00
uwb
video Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2009-04-07 07:40:55 -07:00
virtio
w1 mfd: remove DS1WM clock handling 2009-04-05 00:32:22 +02:00
watchdog powerpc/wdrtas: Update wdrtas_get_interval to use rtas_data_buf 2009-04-07 15:07:43 +10:00
xen Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask 2009-04-05 10:33:07 -07:00
zorro
Kconfig
Makefile