linux-uconsole/drivers/tty
Fabrice Gasnier e44463f267 serial: stm32: fix clearing interrupt error flags
[ Upstream commit 1250ed7114 ]

The interrupt clear flag register is a "write 1 to clear" register.
So, only writing ones allows to clear flags:
- Replace buggy stm32_clr_bits() by a simple write to clear error flags
- Replace useless read/modify/write stm32_set_bits() routine by a
  simple write to clear TC (transfer complete) flag.

Fixes: 4f01d833fd ("serial: stm32: fix rx error handling")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1574323849-1909-1-git-send-email-fabrice.gasnier@st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:51:22 +01:00
..
hvc powerpc/pseries/hvconsole: Fix stack overread via udbg 2020-01-09 10:19:08 +01:00
ipwireless tty: ipwireless: Fix potential NULL pointer dereference 2020-01-27 14:50:16 +01:00
serdev serdev: Don't claim unsupported ACPI serial devices 2020-01-14 20:07:05 +01:00
serial serial: stm32: fix clearing interrupt error flags 2020-01-27 14:51:22 +01:00
vt vcs: prevent write access to vcsu devices 2019-12-13 08:52:51 +01:00
amiserial.c
cyclades.c
ehv_bytechan.c
goldfish.c
isicom.c
Kconfig
Makefile
mips_ejtag_fdc.c
moxa.c
moxa.h
mxser.c
mxser.h
n_gsm.c
n_hdlc.c tty: Don't block on IO when ldisc change is pending 2019-12-13 08:52:28 +01:00
n_null.c
n_r3964.c tty: Don't block on IO when ldisc change is pending 2019-12-13 08:52:28 +01:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c tty: Don't block on IO when ldisc change is pending 2019-12-13 08:52:28 +01:00
nozomi.c
pty.c pty: fix compat ioctls 2019-12-01 09:16:16 +01:00
rocket.c tty: rocket: fix incorrect forward declaration of 'rp_init()' 2019-07-10 09:53:44 +02:00
rocket.h
rocket_int.h
synclink.c
synclink_gt.c synclink_gt(): fix compat_ioctl() 2019-12-01 09:16:16 +01:00
synclinkmp.c
sysrq.c
tty_audit.c
tty_baudrate.c
tty_buffer.c
tty_io.c
tty_ioctl.c
tty_jobctrl.c
tty_ldisc.c tty: Don't block on IO when ldisc change is pending 2019-12-13 08:52:28 +01:00
tty_ldsem.c tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop 2019-08-16 10:12:50 +02:00
tty_mutex.c
tty_port.c tty: always relink the port 2020-01-14 20:07:06 +01:00
vcc.c