[PATCH] drm: fix writing to /sys/class/drm/*/status

Chris Wilson chris at chris-wilson.co.uk
Fri Jun 5 11:56:38 PDT 2015

On Fri, Jun 05, 2015 at 07:47:22PM +0100, Russell King wrote:
> Writing to a file is supposed to return the number of bytes written.
> Returning zero unfortunately causes bash to constantly spin trying
> to write to the sysfs file, to such an extent that even ^c and ^z
> have no effect.  The only way out of that is to kill the shell and
> log back in.  This isn't nice behaviour.
> Fix it by returning the number of characters written to sysfs files.
> Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>


Fixes: c484f02d0f02fbbfc6decc945a69aae011041a27
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

Dave, we need this for 4.1...

Chris Wilson, Intel Open Source Technology Centre

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