Re: [PATCH] fix early_serial_setup() regression

From: Kyle McMartin
Date: Tue Jan 13 2009 - 16:55:51 EST


On Tue, Jan 13, 2009 at 10:51:07PM +0100, Helge Deller wrote:
> commit b430428a188e8a434325e251d0704af4b88b4711,
> "8250: Don't clobber spinlocks."
> introduced a regression on the parisc architecture, which
> broke the handover to the serial port at boottime.
>
> early_serial_setup() was changed to only copy a subset of the
> uart_port fields, and sadly the "type" and "line" fields
> were forgotten and thus the serial port was not initialized
> and could not be used for a handover.
> This patch fixes this by copying the missing fields.
>
> As this change to early_serial_setup() doesn't need an
> initialized spinlock in the uart_port struct any longer, we
> can drop the spinlock initialization in the superio driver.
>
> CC: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>
> CC: Tomaso Paoletti <tpaoletti@xxxxxxxxxxxxxxxxxx>
> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> CC: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
> CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> CC: Kyle McMartin <kyle@xxxxxxxxxxx>
> CC: linux-parisc@xxxxxxxxxxxxxxx
>
> Signed-off-by: Helge Deller <deller@xxxxxx>
>

Acked-by: Kyle McMartin <kyle@xxxxxxxxxxx>

Linus, please apply.
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