Andrew Jeffery f66a877083 ipmi: kcs: Poll OBF briefly to reduce OBE latency ... [ Upstream commit f90bc0f97f ] The ASPEED KCS devices don't provide a BMC-side interrupt for the host reading the output data register (ODR). The act of the host reading ODR clears the output buffer full (OBF) flag in the status register (STR), informing the BMC it can transmit a subsequent byte. On the BMC side the KCS client must enable the OBE event *and* perform a subsequent read of STR anyway to avoid races - the polling provides a window for the host to read ODR if data was freshly written while minimising BMC-side latency. Fixes: 28651e6c42 ("ipmi: kcs_bmc: Allow clients to control KCS IRQ state") Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Reviewed-by: Joel Stanley <joel@jms.id.au> Message-Id: <20220812144741.240315-1-andrew@aj.id.au> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-31 13:14:06 +01:00
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agp	…
hw_random	hwrng: imx-rngc - Moving IRQ handler registering after imx_rngc_irq_mask_clear()	2022-10-26 12:35:24 +02:00
ipmi	ipmi: kcs: Poll OBF briefly to reduce OBE latency	2022-12-31 13:14:06 +01:00
mwave	char/mwave: Adjust io port register size	2022-01-27 11:04:09 +01:00
pcmcia	…
tpm	tpm/tpm_crb: Fix error message in __crb_relinquish_locality()	2022-12-31 13:14:00 +01:00
xilinx_hwicap	…
xillybus	char: xillybus: fix a refcount leak in cleanup_dev()	2022-06-14 18:36:21 +02:00
Kconfig	random: credit cpu and bootloader seeds by default	2022-06-22 14:21:58 +02:00
Makefile	…
adi.c	…
apm-emulation.c	…
applicom.c	…
applicom.h	…
bsr.c	…
ds1620.c	…
dsp56k.c	…
dtlk.c	…
hangcheck-timer.c	…
hpet.c	…
lp.c	…
mem.c	random: restore O_NONBLOCK support	2022-10-15 07:59:01 +02:00
misc.c	…
mspec.c	…
nsc_gpio.c	…
nvram.c	…
nwbutton.c	…
nwbutton.h	…
nwflash.c	…
pc8736x_gpio.c	…
powernv-op-panel.c	…
ppdev.c	…
ps3flash.c	…
random.c	random: use expired timer rather than wq for mixing fast pool	2022-10-15 07:59:02 +02:00
scx200_gpio.c	…
sonypi.c	…
tb0219.c	…
tlclk.c	…
toshiba.c	…
ttyprintk.c	…
uv_mmtimer.c	…
virtio_console.c	virtio_console: eliminate anonymous module_init & module_exit	2022-04-13 20:59:13 +02:00