Peter Huewe 5cc0101d1f tpm_tis_spi: Add small delay after last transfer ... Testing the implementation with a Raspberry Pi 2 showed that under some circumstances its SPI master erroneously releases the CS line before the transfer is complete, i.e. before the end of the last clock. In this case the TPM ignores the transfer and misses for example the GO command. The driver is unable to detect this communication problem and will wait for a command response that is never going to arrive, timing out eventually. As a workaround, the small delay ensures that the CS line is held long enough, even with a faulty SPI master. Other SPI masters are not affected, except for a negligible performance penalty. Cc: <stable@vger.kernel.org> Fixes: 0edbfea537 ("tpm/tpm_tis_spi: Add support for spi phy") Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com> Signed-off-by: Peter Huewe <peter.huewe@infineon.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: Benoit Houyere <benoit.houyere@st.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>		2017-04-03 22:46:01 +03:00
..
agp	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
hw_random	hwrng: geode - Revert managed API changes	2017-03-16 17:43:11 +08:00
ipmi	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
mwave	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
pcmcia	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
tpm	tpm_tis_spi: Add small delay after last transfer	2017-04-03 22:46:01 +03:00
xilinx_hwicap	char: xilinx_hwicap: Remove pointless local variables	2017-01-25 11:41:44 +01:00
xillybus	char: xillybus: Fix spelling mistake and comment	2016-08-31 14:47:54 +02:00
apm-emulation.c	apm-emulation: move APM_MINOR_DEV to include/linux/miscdevice.h	2017-01-10 21:46:41 +01:00
applicom.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
applicom.h
bfin-otp.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
bsr.c	bsr: avoid format string leaking into device name	2014-07-09 16:59:15 -07:00
ds1302.c	ds1302: remove unneeded linux/miscdevice.h include	2017-01-10 21:46:41 +01:00
ds1620.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
dsp56k.c	dsp56k: prevent a harmless underflow	2016-07-14 16:21:53 +09:00
dtlk.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
efirtc.c	drivers/char: make efirtc.c driver explicitly non-modular	2015-09-20 19:32:35 -07:00
generic_nvram.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
hangcheck-timer.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
hpet.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
Kconfig	TTY/Serial driver patches for 4.11-rc1	2017-02-22 12:17:25 -08:00
lp.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
Makefile	RTC for 4.8	2016-08-05 09:48:22 -04:00
mbcs.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
mbcs.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
mem.c	drivers: char: mem: Fix thinkos in kmem address checks	2017-01-11 08:02:18 +01:00
misc.c	char: make misc_deregister a void function	2015-08-05 10:35:49 -07:00
mmtimer.c	mmtimer: add member name to the miscdevice declaration	2017-01-10 21:46:41 +01:00
mspec.c	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
nsc_gpio.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
nvram.c	char/nvram: set array of const as const	2016-02-08 14:57:30 -08:00
nwbutton.c	drivers/char/nwbutton: Fix build breakage caused by include file reshuffling	2017-03-07 08:35:49 +01:00
nwbutton.h
nwflash.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
pc8736x_gpio.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
powernv-op-panel.c	powerpc/powernv: Add driver for operator panel on FSP machines	2016-06-29 17:33:46 +10:00
ppdev.c	ppdev: fix registering same device name	2017-03-16 17:32:21 +09:00
ps3flash.c	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
random.c	random: move random_min_urandom_seed into CONFIG_SYSCTL ifdef block	2017-02-06 20:46:49 -05:00
raw.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
rtc.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
scx200_gpio.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
snsc_event.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	2017-03-02 08:42:29 +01:00
snsc.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
snsc.h	headers: kobject.h redux	2011-01-10 08:51:44 -08:00
sonypi.c	scripts/spelling.txt: add "initialiazation" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
tb0219.c	mips: separate extable.h, switch module.h to it	2016-10-05 18:36:18 -04:00
tile-srom.c	tile-srom: allow the driver to be built as a module	2016-11-10 15:18:56 +01:00
tlclk.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
toshiba.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
ttyprintk.c	ttyprintk: Neaten and simplify printing	2016-09-13 17:30:17 +02:00
uv_mmtimer.c	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
virtio_console.c	virtio-console: avoid DMA from stack	2017-03-02 01:35:06 +02:00