V4L/DVB (5570): V4l1-compat: misc fixes for pixelformat function
Mark the palette2pixelformat lookup table as const
pixelformat is unsigned, adjust the palette2pixelformat table and
pixelformat_to_palette()
palette_to_pixelformat() is a pure function
pixelformat_to_palette() is a const function
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/v4l1-compat.c b/drivers/media/video/v4l1-compat.c
index a861e15..efb67d2 100644
--- a/drivers/media/video/v4l1-compat.c
+++ b/drivers/media/video/v4l1-compat.c
@@ -127,7 +127,7 @@
/* ----------------------------------------------------------------- */
-static int palette2pixelformat[] = {
+const static unsigned int palette2pixelformat[] = {
[VIDEO_PALETTE_GREY] = V4L2_PIX_FMT_GREY,
[VIDEO_PALETTE_RGB555] = V4L2_PIX_FMT_RGB555,
[VIDEO_PALETTE_RGB565] = V4L2_PIX_FMT_RGB565,
@@ -145,7 +145,7 @@
[VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
};
-static unsigned int
+static unsigned int __attribute_pure__
palette_to_pixelformat(unsigned int palette)
{
if (palette < ARRAY_SIZE(palette2pixelformat))
@@ -154,8 +154,8 @@
return 0;
}
-static unsigned int
-pixelformat_to_palette(int pixelformat)
+static unsigned int __attribute_const__
+pixelformat_to_palette(unsigned int pixelformat)
{
int palette = 0;
switch (pixelformat)