RE: [PATCH 15/21] staging: comedi/dawboard2000: use mdelay forlarge delays

From: H Hartley Sweeten
Date: Tue Apr 23 2013 - 12:54:52 EST


On Tuesday, April 23, 2013 9:31 AM, Arnd Bergmann wrote:
> Subject: [PATCH 15/21] staging: comedi/dawboard2000: use mdelay for large delays

Nit.. Typo in subject.

> On ARM, it is not legal to pass values larger than 2ms into udelay(),
> and mdelay() must be used instead, to avoid this build error:
>
> ERROR: "__bad_udelay" [drivers/staging/comedi/drivers/daqboard2000.ko]
> undefined!
>
> On a related note, any use of mdelay() or large udelay() numbers should
> be carefully reviewed, and replaced with msleep() or a different
> implementation that does not rely on delaying the work.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
> Cc: Ian Abbott <abbotti@xxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

Reviewed-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>

Thanks,
Hartley
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