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	parisc/agp: Annotate parisc agp init functions with __init	2021-12-17 10:30:15 +01:00
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	TTY / Serial patches for 5.15-rc1	2021-09-01 09:51:16 -07:00
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	remove the raw driver	2021-06-04 15:35:03 +02:00
adi.c	…
apm-emulation.c	…
applicom.c	…
applicom.h	…
bsr.c	…
ds1620.c	…
dsp56k.c	…
dtlk.c	…
hangcheck-timer.c	…
hpet.c	char: hpet: Remove unused variable 'm'	2021-05-21 10:09:30 +02:00
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	powerpc/powernv: Fix fall-through warning for Clang	2021-07-13 19:21:41 -05:00
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	tty: drop put_tty_driver	2021-07-27 12:17:21 +02:00
uv_mmtimer.c	…
virtio_console.c	virtio_console: eliminate anonymous module_init & module_exit	2022-04-13 20:59:13 +02:00