David Brownell 4b1badf5d9 [PATCH] SPI: define null tx_buf to mean "shift out zeroes" ... Some issues were recently turned up with the current specification of what it means for spi_transfer.tx_buf to be null, as part of transfers which are (from the SPI protocol driver perspective) pure reads. Specifically, that it seems better to change the TX behaviour there from "undefined" to "will shift zeroes". This lets protocol drivers (like the ads7846 driver) depend on that behavior. It's what most controller drivers in the tree are already doing (with one exception and one case of driver wanting-to-oops), it's what Microwire hardware will necessarily be doing, and it removes an issue whereby certain security audits would need to define such a value anyway as part of removing covert channels. This patch changes the specification to require shifting zeroes, and updates all currently merged SPI controller drivers to do so. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-12-30 10:56:42 -08:00
..
acorn	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2006-12-22 18:46:56 -08:00
amba
ata	[libata] sata_svw, sata_vsc: kill iomem warnings	2006-12-20 14:37:04 -05:00
atm	[ATM] drivers/atm/fore200e.c: Cleanups.	2006-12-22 11:12:00 -08:00
base	[PATCH] fix kernel-doc warnings in 2.6.20-rc1	2006-12-22 08:55:47 -08:00
block	[PATCH] cciss: build with PROC_FS=n	2006-12-30 10:56:42 -08:00
bluetooth	[PATCH] bluetooth: add support for another Kensington dongle	2006-12-20 11:29:29 -08:00
cdrom	Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block	2006-12-21 00:03:38 -08:00
char	[PATCH] Char: isicom, eliminate spinlock recursion	2006-12-30 10:55:55 -08:00
clocksource	[PATCH] clocksource: small cleanup	2006-12-10 09:57:22 -08:00
connector	[CONNECTOR]: Replace delayed work with usual work queue.	2006-12-18 01:53:58 -08:00
cpufreq	[CPUFREQ] fixes typo in cpufreq.c	2006-12-13 10:11:25 -05:00
crypto	[PATCH] geode crypto is PCI device	2006-12-10 09:55:40 -08:00
dio
dma
edac
eisa
fc4	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
firmware
hid	input/hid: Supporting more keys from the HUT Consumer Page	2006-12-14 13:37:24 +01:00
hwmon	hwmon: New AMS hardware monitoring driver	2006-12-12 18:18:30 +01:00
i2c	Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6	2006-12-13 09:13:19 -08:00
ide	PCI: ATI sb600 sata quirk	2006-12-20 10:54:44 -08:00
ieee1394	i2c: Discard the i2c algo del_bus wrappers	2006-12-10 21:21:33 +01:00
infiniband	[PATCH] IB/mthca: Fix FMR breakage caused by kmemdup() conversion	2006-12-30 10:55:55 -08:00
input	[SUNKBD]: Fix sunkbd_enable(sunkbd, 0); obvious.	2006-12-17 14:06:58 -08:00
isdn	[PATCH] Call init_timer() for ISDN PPP CCP reset state timer	2006-12-22 14:31:24 -08:00
kvm	[PATCH] KVM: API versioning	2006-12-22 08:55:46 -08:00
leds	kconfig: Standardize "depends" -> "depends on" in Kconfig files	2006-12-12 20:04:19 +01:00
macintosh	[PATCH] Fix compilation of via-pmu-backlight	2006-12-30 10:56:41 -08:00
mca
md	[PATCH] md: fix a few problems with the interface (sysfs and ioctl) to md	2006-12-22 08:55:51 -08:00
media	V4L/DVB (5010): Cx88: Fix leadtek_eeprom tagging	2006-12-27 14:23:58 -02:00
message	[PATCH] fix kernel-doc warnings in 2.6.20-rc1	2006-12-22 08:55:47 -08:00
mfd
misc	Pull platform-drivers into test branch	2006-12-20 02:52:17 -05:00
mmc	AT91 MMC update for 2.6.19	2006-12-11 12:43:35 +01:00
mtd	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
net	Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6	2006-12-29 10:03:54 -08:00
nubus
oprofile
parisc	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
parport	[PATCH] Kconfig refactoring for better menu nesting	2006-12-10 09:55:39 -08:00
pci	[PATCH] pci/probe: fix macro that confuses kernel-doc	2006-12-30 10:55:55 -08:00
pcmcia	[PATCH] Fix numerous kcalloc() calls, convert to kzalloc()	2006-12-13 09:05:52 -08:00
pnp	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
ps3	[POWERPC] ps3: Add vuart support	2006-12-11 13:49:53 +11:00
rapidio
rtc	[PATCH] rtc framewok: rtc_wkalrm.enabled reporting updates	2006-12-13 09:05:52 -08:00
s390	[S390] cio: fix stsch_reset.	2006-12-28 00:35:36 +01:00
sbus	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
scsi	[PATCH] powerpc iseries link error in allmodconfig	2006-12-30 10:55:54 -08:00
serial	[PATCH] serial/uartlite: Only enable port if request_port succeeded	2006-12-22 09:58:48 -08:00
sh
sn
spi	[PATCH] SPI: define null tx_buf to mean "shift out zeroes"	2006-12-30 10:56:42 -08:00
tc
telephony
usb	[PATCH] make fn_keys work again on power/macbooks	2006-12-30 10:55:55 -08:00
video	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2006-12-22 18:46:56 -08:00
w1	[PATCH] w1: Fix for kconfig entry typo	2006-12-13 09:05:48 -08:00
zorro
Kconfig	[PATCH] kvm: userspace interface	2006-12-10 09:57:22 -08:00
Makefile	[PATCH] kvm: userspace interface	2006-12-10 09:57:22 -08:00