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serial: imx: Initialize lock for non-registered console

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The commit a3cb39d258
("serial: core: Allow detach and attach serial device for console")
changed a bit logic behind lock initialization since for most of the console
driver it's supposed to have lock already initialized even if console is not
enabled. However, it's not the case for Freescale IMX console.

Initialize lock explicitly in the ->probe().

Note, there is still an open question should or shouldn't not this driver
register console properly.

Fixes: a3cb39d258 ("serial: core: Allow detach and attach serial device for console")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200525105952.13744-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2020-05-25 13:59:52 +03:00 committed by Greg Kroah-Hartman
parent 344235f557
commit 8f065acec7
1 changed files with 3 additions and 0 deletions
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3
drivers/tty/serial/imx.c
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@ -2404,6 +2404,9 @@ static int imx_uart_probe(struct platform_device *pdev)
}
}
/* We need to initialize lock even for non-registered console */
spin_lock_init(&sport->port.lock);
imx_uart_ports[sport->port.line] = sport;
platform_set_drvdata(pdev, sport);