drivers: PL011: replace UART_MIS reading with _RIS & _IMSC

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The PL011 register UART_MIS is actually a bitwise AND of the
UART_RIS and the UART_MISC register.
Since the SBSA UART does not include the _MIS register, use the
two separate registers to get the same behaviour. Since we are
inside the spinlock and we read the _IMSC register only once, there
should be no race issue.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Tested-by: Naresh Bhat <nbhat@cavium.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Andre Przywara 2015-05-21 17:26:19 +01:00 • committed by Greg Kroah-Hartman

parent 3873e2d7f6

commit 075167ed71

1 changed files with 4 additions and 2 deletions

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drivers/tty/serial/amba-pl011.c

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