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05 April 2024, 19:05:47 UTC
Revision 60f361722ad2ae5ee667d0b0545d40c42f754daf authored by Lukas Wunner on 11 September 2022, 08:22:01 UTC, committed by Greg Kroah-Hartman on 22 September 2022, 14:37:59 UTC 
serial: fsl_lpuart: Reset prior to registration
 
Since commit bd5305dcabbc ("tty: serial: fsl_lpuart: do software reset
for imx7ulp and imx8qxp"), certain i.MX UARTs are reset after they've
already been registered.  Register state may thus be clobbered after
user space has begun to open and access the UART.

Avoid by performing the reset prior to registration.

Fixes: bd5305dcabbc ("tty: serial: fsl_lpuart: do software reset for imx7ulp and imx8qxp")
Cc: stable@vger.kernel.org # v5.15+
Cc: Fugang Duan <fugang.duan@nxp.com>
Cc: Sherry Sun <sherry.sun@nxp.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/72fb646c1b0b11c989850c55f52f9ff343d1b2fa.1662884345.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 parent 1d10cd4
History
Tip revision: 60f361722ad2ae5ee667d0b0545d40c42f754daf authored by Lukas Wunner on 11 September 2022, 08:22:01 UTC
serial: fsl_lpuart: Reset prior to registration
Tip revision: 60f3617
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