6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
[ Upstream commit de1c705c50326acaceaf1f02bc5bf6f267c572bd ]
The functions mipi_dsi_compression_mode() and
mipi_dsi_picture_parameter_set() return 0-or-error rather than a buffer
size. Follow example of other similar MIPI DSI functions and use int
return type instead of size_t.
Fixes: f4dea1aaa9a1 ("drm/dsi: add helpers for DSI compression mode and PPS packets")
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240408-lg-sw43408-panel-v5-2-4e092da22991@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/drm_mipi_dsi.c | 6 +++---
include/drm/drm_mipi_dsi.h | 6 +++---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 843a6dbda93a0..52a93149363b4 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -654,7 +654,7 @@ EXPORT_SYMBOL(mipi_dsi_set_maximum_return_packet_size);
*
* Return: 0 on success or a negative error code on failure.
*/
-ssize_t mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable)
+int mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable)
{
/* Note: Needs updating for non-default PPS or algorithm */
u8 tx[2] = { enable << 0, 0 };
@@ -679,8 +679,8 @@ EXPORT_SYMBOL(mipi_dsi_compression_mode);
*
* Return: 0 on success or a negative error code on failure.
*/
-ssize_t mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi,
- const struct drm_dsc_picture_parameter_set *pps)
+int mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi,
+ const struct drm_dsc_picture_parameter_set *pps)
{
struct mipi_dsi_msg msg = {
.channel = dsi->channel,
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index c0aec0d4d664e..3011d33eccbd2 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -241,9 +241,9 @@ int mipi_dsi_shutdown_peripheral(struct mipi_dsi_device *dsi);
int mipi_dsi_turn_on_peripheral(struct mipi_dsi_device *dsi);
int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi,
u16 value);
-ssize_t mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable);
-ssize_t mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi,
- const struct drm_dsc_picture_parameter_set *pps);
+int mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable);
+int mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi,
+ const struct drm_dsc_picture_parameter_set *pps);
ssize_t mipi_dsi_generic_write(struct mipi_dsi_device *dsi, const void *payload,
size_t size);
--
2.43.0
