tty: serial: imx: add lock for registers save/restore

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In noirq suspend/resume stage with no_console_suspend enabled,
imx_uart_console_write() may be called to print out log_buf
message by printk(), so there will be race condition between
imx_uart_console_write() and imx_uart_save/restore_context(),
need to add lock to protect the registers save/restore operations.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Anson Huang 2018-09-05 09:24:26 +08:00 • committed by Greg Kroah-Hartman

parent c974991d26

commit 07b5e16e98

1 changed files with 11 additions and 1 deletions

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drivers/tty/serial/imx.c

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