Jun 29 2016

ALSA: riptide: Use DIV_ROUND_UP 

Author: Amitoj Kaur Chawla <amitoj1606@gmail.com>

The kernel.h macro DIV_ROUND_UP performs the computation
(((n) + (d) - 1) /(d)) but is perhaps more readable.

The Coccinelle script used to make this change is as follows:
@haskernel@
@@

#include 

@depends on haskernel@
expression n,d;
@@

(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)

Signed-off-by: Amitoj Kaur Chawla 
Reviewed-by: Takashi Sakamoto 
Signed-off-by: Takashi Iwai 

---
 sound/pci/riptide/riptide.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c
index 94639d6..067a912 100644
--- a/sound/pci/riptide/riptide.c
+++ b/sound/pci/riptide/riptide.c
@@ -1496,7 +1496,7 @@ static int snd_riptide_prepare(struct snd_pcm_substream *substream)
 		f = PAGE_SIZE;
 		while ((size + (f >> 1) - 1) <= (f << 7) && (f << 1) > period)
 			f = f >> 1;
-		pages = (size + f - 1) / f;
+		pages = DIV_ROUND_UP(size, f);
 		data->size = size;
 		data->pages = pages;
 		snd_printdd

qlambert