drivers: staging: most: use swabXX functions of kernel

This patch makes use of the swab16() and swab32() functions available
in the kernel instead of using own implementations.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604494242-3414-1-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/most/sound/sound.c b/drivers/staging/most/sound/sound.c
index 8a449ab9bdce4616de39402ee2c2f6b845eb74f1..3a1a590580427271d765c2c4ff7c0600a66ef576 100644 (file)
--- a/drivers/staging/most/sound/sound.c
+++ b/drivers/staging/most/sound/sound.c
@@ -72,22 +72,12 @@ static struct list_head adpt_list;
                       SNDRV_PCM_INFO_INTERLEAVED | \
                       SNDRV_PCM_INFO_BLOCK_TRANSFER)
 
-#define swap16(val) ( \
-       (((u16)(val) << 8) & (u16)0xFF00) | \
-       (((u16)(val) >> 8) & (u16)0x00FF))
-
-#define swap32(val) ( \
-       (((u32)(val) << 24) & (u32)0xFF000000) | \
-       (((u32)(val) <<  8) & (u32)0x00FF0000) | \
-       (((u32)(val) >>  8) & (u32)0x0000FF00) | \
-       (((u32)(val) >> 24) & (u32)0x000000FF))
-
 static void swap_copy16(u16 *dest, const u16 *source, unsigned int bytes)
 {
        unsigned int i = 0;
 
        while (i < (bytes / 2)) {
-               dest[i] = swap16(source[i]);
+               dest[i] = swab16(source[i]);
                i++;
        }
 }
@@ -109,7 +99,7 @@ static void swap_copy32(u32 *dest, const u32 *source, unsigned int bytes)
        unsigned int i = 0;
 
        while (i < bytes / 4) {
-               dest[i] = swap32(source[i]);
+               dest[i] = swab32(source[i]);
                i++;
        }
 }