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authorVille Syrjälä <ville.syrjala@linux.intel.com>2018-09-20 21:51:28 +0300
committerVille Syrjälä <ville.syrjala@linux.intel.com>2018-10-01 21:35:56 +0300
commitf26e1de5ec487c040efa845f280d110c29baea32 (patch)
tree2560e0306339e7826f69418648013818cf6d7e54 /drivers/video/hdmi.c
parentf384d7d514d1f6d5d0a485e718fdbf37bf438a35 (diff)
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video/hdmi: Constify 'buffer' to the unpack functions
The unpack functions just read from the passed in buffer, so make it const. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: linux-media@vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180920185145.1912-2-ville.syrjala@linux.intel.com Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Diffstat (limited to 'drivers/video/hdmi.c')
-rw-r--r--drivers/video/hdmi.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
index 38716eb50408..65b915ea4936 100644
--- a/drivers/video/hdmi.c
+++ b/drivers/video/hdmi.c
@@ -31,7 +31,7 @@
#define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
-static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size)
+static u8 hdmi_infoframe_checksum(const u8 *ptr, size_t size)
{
u8 csum = 0;
size_t i;
@@ -1016,9 +1016,9 @@ EXPORT_SYMBOL(hdmi_infoframe_log);
* Returns 0 on success or a negative error code on failure.
*/
static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
- void *buffer)
+ const void *buffer)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
int ret;
if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI ||
@@ -1079,9 +1079,9 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
* Returns 0 on success or a negative error code on failure.
*/
static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
- void *buffer)
+ const void *buffer)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
int ret;
if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD ||
@@ -1117,9 +1117,9 @@ static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
* Returns 0 on success or a negative error code on failure.
*/
static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
- void *buffer)
+ const void *buffer)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
int ret;
if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO ||
@@ -1163,9 +1163,9 @@ static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
*/
static int
hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
- void *buffer)
+ const void *buffer)
{
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
size_t length;
int ret;
u8 hdmi_video_format;
@@ -1234,10 +1234,11 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
*
* Returns 0 on success or a negative error code on failure.
*/
-int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer)
+int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
+ const void *buffer)
{
int ret;
- u8 *ptr = buffer;
+ const u8 *ptr = buffer;
switch (ptr[0]) {
case HDMI_INFOFRAME_TYPE_AVI: