On Thu, 20 Nov 2014, Stefan Brüns <stefan.bruens at rwth-aachen.de> wrote:
> The function will also be used by a later patch, so factor it out.
>
> Signed-off-by: Stefan Brüns <stefan.bruens at rwth-aachen.de>
> ---
> drivers/gpu/drm/drm_edid.c | 14 ++++++++++++--
> 1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index ec4f91f..b072041 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -1048,8 +1048,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool
> print_bad_edid)
> }
> }
>
> - for (i = 0; i < EDID_LENGTH; i++)
> - csum += raw_edid[i];
> + csum = drm_edid_block_checksum(raw_edid);
With this change, it's no longer necessary to initialize csum to 0 in
drm_edid_block_valid.
> if (csum) {
> if (print_bad_edid) {
> DRM_ERROR("EDID checksum is invalid, remainder is
> %d\n", csum);
> @@ -1188,6 +1187,17 @@ static bool drm_edid_is_zero(u8 *in_edid, int length)
> return true;
> }
>
> +static u8
> +drm_edid_block_checksum(u8 *raw_edid)
const u8 *raw_edid, please.
Those fixed,
Reviewed-by: Jani Nikula <jani.nikula at intel.com>
> +{
> + int i;
> + u8 csum = 0;
> + for (i = 0; i < EDID_LENGTH; i++)
> + csum += raw_edid[i];
> +
> + return csum;
> +}
> +
> static u8 *
> drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
> {
> --
> 2.1.2
>
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--
Jani Nikula, Intel Open Source Technology Center
