serial: 8250_dw: fix wrong logic in dw8250_check_lcr()

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Commit cdcea058e5 ("serial: 8250_dw: Avoid serial_outx code duplicate
with new dw8250_check_lcr()") introduce a wrong logic when write val to
LCR reg. When CONFIG_64BIT enabled, __raw_writeq is used unconditionally.

The __raw_readq/__raw_writeq is introduced by commit bca2092d78 ("serial:
8250_dw: Use 64-bit access for OCTEON.") for OCTEON.

So for 64BIT && !PORT_OCTEON, we better to use coincident write function.

Fixes: cdcea058e510("serial: 8250_dw: Avoid serial_outx code duplicate with new dw8250_check_lcr()")
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Kefeng Wang 2016-05-02 17:19:46 +08:00 • committed by Greg Kroah-Hartman

parent 96317e9e2a

commit 6550be9f62

1 changed files with 4 additions and 3 deletions

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drivers/tty/serial/8250/8250_dw.c

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