Fugang Duan 123667ed90 tty: serial: imx: keep console clocks always on ... commit e67c139c48 upstream. For below code, there has chance to cause deadlock in SMP system: Thread 1: clk_enable_lock(); pr_info("debug message"); clk_enable_unlock(); Thread 2: imx_uart_console_write() clk_enable() clk_enable_lock(); Thread 1: Acuired clk enable_lock -> printk -> console_trylock_spinning Thread 2: console_unlock() -> imx_uart_console_write -> clk_disable -> Acquite clk enable_lock So the patch is to keep console port clocks always on like other console drivers. Fixes: 1cf93e0d54 ("serial: imx: remove the uart_console() check") Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Fugang Duan <fugang.duan@nxp.com> Link: https://lore.kernel.org/r/20201111025136.29818-1-fugang.duan@nxp.com Cc: stable <stable@vger.kernel.org> [fix up build warning - gregkh] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-11-24 13:27:24 +01:00
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hvc	tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()	2020-10-29 09:55:08 +01:00
ipwireless	tty: ipwireless: fix error handling	2020-10-30 10:38:31 +01:00
serdev	serdev: ttyport: restore client ops on deregistration	2020-02-28 16:38:49 +01:00
serial	tty: serial: imx: keep console clocks always on	2020-11-24 13:27:24 +01:00
vt	vt: Disable KD_FONT_OP_COPY	2020-11-10 12:36:00 +01:00
amiserial.c
cyclades.c
ehv_bytechan.c	tty: evh_bytechan: Fix out of bounds accesses	2020-04-23 10:30:23 +02:00
goldfish.c
isicom.c
Kconfig
Makefile
mips_ejtag_fdc.c
moxa.c
moxa.h
mxser.c
mxser.h
n_gsm.c	tty: n_gsm: Fix bogus i++ in gsm_data_kick	2020-06-25 15:32:57 +02:00
n_hdlc.c
n_null.c
n_r3964.c
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c
nozomi.c
pty.c	pty: do tty_flip_buffer_push without port->lock in pty_write	2020-10-29 09:55:08 +01:00
rocket_int.h
rocket.c	tty: rocket, avoid OOB access	2020-04-29 16:31:30 +02:00
rocket.h
synclink_gt.c	tty: synclink_gt: Adjust indentation in several functions	2020-02-24 08:34:47 +01:00
synclink.c
synclinkmp.c	tty: synclinkmp: Adjust indentation in several functions	2020-02-24 08:34:47 +01:00
sysrq.c	sysrq: Remove duplicated sysrq message	2020-03-05 16:42:15 +01:00
tty_audit.c
tty_baudrate.c
tty_buffer.c
tty_io.c
tty_ioctl.c
tty_jobctrl.c
tty_ldisc.c
tty_ldsem.c
tty_mutex.c
tty_port.c	serdev: ttyport: restore client ops on deregistration	2020-02-28 16:38:49 +01:00
vcc.c	sparc64: vcc: Fix error return code in vcc_probe()	2020-10-01 13:14:43 +02:00