[PATCH v2] drm/dsc: Return unsigned long on compute offset

[mikita.lipski at amd.com]

From: Mikita Lipski <mikita.lipski at amd.com>

We shouldn't compare int with unsigned long to find the max value
and since we are not expecting negative value returned from
compute_offset we should make this function return unsigned long
so we can compare the values when computing rc parameters.

v2: Modified function parameters to unsigned type for type
consistency

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Nikola Cornij <nikola.cornij at amd.com>
Cc: Harry Wentland <harry.wentland at amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
---
 drivers/gpu/drm/drm_dsc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_dsc.c b/drivers/gpu/drm/drm_dsc.c
index 74f3527f567d..ccce0297da64 100644
--- a/drivers/gpu/drm/drm_dsc.c
+++ b/drivers/gpu/drm/drm_dsc.c
@@ -245,11 +245,11 @@ void drm_dsc_pps_payload_pack(struct drm_dsc_picture_parameter_set *pps_payload,
 }
 EXPORT_SYMBOL(drm_dsc_pps_payload_pack);
 
-static int compute_offset(struct drm_dsc_config *vdsc_cfg, int pixels_per_group,
-				int groups_per_line, int grpcnt)
+static unsigned long compute_offset(struct drm_dsc_config *vdsc_cfg, unsigned int pixels_per_group,
+				unsigned long groups_per_line, unsigned long grpcnt)
 {
-	int offset = 0;
-	int grpcnt_id = DIV_ROUND_UP(vdsc_cfg->initial_xmit_delay, pixels_per_group);
+	unsigned long offset = 0;
+	unsigned long grpcnt_id = DIV_ROUND_UP(vdsc_cfg->initial_xmit_delay, pixels_per_group);
 
 	if (grpcnt <= grpcnt_id)
 		offset = DIV_ROUND_UP(grpcnt * pixels_per_group * vdsc_cfg->bits_per_pixel, 16);
-- 
2.17.1