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authorYonghan Ye <yonghan.ye@unisoc.com>2019-12-04 20:00:07 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-12-12 14:26:59 +0100
commitabeb2e9414d7e3a0d8417bc3b13d7172513ea8a0 (patch)
treeda346c5362b7de8ba104dfa298616ba20d56ec7d /drivers/tty/tty_port.c
parent0e4f7f920a5c6bfe5e851e989f27b35a0cc7fb7e (diff)
serial: sprd: Add clearing break interrupt operation
A break interrupt will be generated if the RX line was pulled low, which means some abnomal behaviors occurred of the UART. In this case, we still need to clear this break interrupt status, otherwise it will cause irq storm to crash the whole system. Fixes: b7396a38fb28 ("tty/serial: Add Spreadtrum sc9836-uart driver support") Signed-off-by: Yonghan Ye <yonghan.ye@unisoc.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Baolin Wang <baolin.wang7@gmail.com> Link: https://lore.kernel.org/r/925e51b73099c90158e080b8f5bed9b3b38c4548.1575460601.git.baolin.wang7@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_port.c')
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