Commit f019190b authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Sam Ravnborg
Browse files

drm/mipi-dbi: Make mipi_dbi_command_stackbuf() data parameter const 



mipi_dbi_command_stackbuf() copies the passed buffer data, so it can be
const.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarNoralf Trønnes <noralf@tronnes.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200316164249.6234-1-geert+renesas@glider.be
parent 92e513fb

drivers/gpu/drm/drm_mipi_dbi.c

+2 −1
Original line number Diff line number Diff line
@@ -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;

include/drm/drm_mipi_dbi.h

+3 −2
Original line number Diff line number Diff line
@@ -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)); \

})

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