linux-kernel - [PATCH] ALSA: riptide: Use DIV_ROUND

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Message-ID: <20160629145628.GA13915@amitoj-Inspiron-3542>
Date:	Wed, 29 Jun 2016 20:26:28 +0530
From:	Amitoj Kaur Chawla <amitoj1606@...il.com>
To:	perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Cc:	julia.lawall@...6.fr
Subject: [PATCH] ALSA: riptide: Use DIV_ROUND_UP

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 <linux/kernel.h>

@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 <amitoj1606@...il.com>
---
 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
-- 
1.9.1