Fugang Duan 772ff2c77c 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 13:29:20 +01:00
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hvc	tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()	2020-10-29 09:57:38 +01:00
ipwireless	tty: ipwireless: fix error handling	2020-10-29 09:58:08 +01:00
serdev	serdev: ttyport: restore client ops on deregistration	2020-02-28 17:22:19 +01:00
serial	tty: serial: imx: keep console clocks always on	2020-11-24 13:29:20 +01:00
vt	vt: Disable KD_FONT_OP_COPY	2020-11-10 12:37:31 +01:00
Kconfig	…
Makefile	…
amiserial.c	…
cyclades.c	…
ehv_bytechan.c	tty: evh_bytechan: Fix out of bounds accesses	2020-04-23 10:36:44 +02:00
goldfish.c	…
isicom.c	…
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	2020-06-24 17:50:29 +02:00
n_hdlc.c	tty: n_hdlc: fix build on SPARC	2019-10-04 15:14:20 +02:00
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 09:57:38 +01:00
rocket.c	tty: rocket, avoid OOB access	2020-04-29 16:33:17 +02:00
rocket.h	…
rocket_int.h	…
synclink.c	…
synclink_gt.c	tty: synclink_gt: Adjust indentation in several functions	2020-02-24 08:36:47 +01:00
synclinkmp.c	tty: synclinkmp: Adjust indentation in several functions	2020-02-24 08:36:47 +01:00
sysrq.c	…
tty_audit.c	…
tty_baudrate.c	…
tty_buffer.c	…
tty_io.c	tty: fix compat TIOCGSERIAL checking wrong function ptr	2020-03-25 08:25:52 +01:00
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 17:22:19 +01:00
ttynull.c	…
vcc.c	sparc64: vcc: Fix error return code in vcc_probe()	2020-10-01 13:17:57 +02:00