mipi_dbi_command_stackbuf() copies the passed buffer data, so it can be
const.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
drivers/gpu/drm/drm_mipi_dbi.c | 3 ++-
include/drm/drm_mipi_dbi.h | 5 +++--
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index 558baf989f5a8432..89e911ccea06cf99 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -169,7 +169,8 @@ int mipi_dbi_command_buf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len)
EXPORT_SYMBOL(mipi_dbi_command_buf);
/* This should only be used by mipi_dbi_command() */
-int mipi_dbi_command_stackbuf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len)
+int mipi_dbi_command_stackbuf(struct mipi_dbi *dbi, u8 cmd, const u8 *data,
+ size_t len)
{
u8 *buf;
int ret;
diff --git a/include/drm/drm_mipi_dbi.h b/include/drm/drm_mipi_dbi.h
index 33f325f5af2b921f..9333b9086c30bd3c 100644
--- a/include/drm/drm_mipi_dbi.h
+++ b/include/drm/drm_mipi_dbi.h
@@ -170,7 +170,8 @@ int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
int mipi_dbi_command_read(struct mipi_dbi *dbi, u8 cmd, u8 *val);
int mipi_dbi_command_buf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len);
-int mipi_dbi_command_stackbuf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len);
+int mipi_dbi_command_stackbuf(struct mipi_dbi *dbi, u8 cmd, const u8 *data,
+ size_t len);
int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
struct drm_rect *clip, bool swap);
/**
@@ -187,7 +188,7 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
*/
#define mipi_dbi_command(dbi, cmd, seq...) \
({ \
- u8 d[] = { seq }; \
+ const u8 d[] = { seq }; \
mipi_dbi_command_stackbuf(dbi, cmd, d, ARRAY_SIZE(d)); \
})
--
2.17.1
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