diff mbox

[05/16] block: Use DIV_ROUND_UP

Message ID 1464712565-14857-6-git-send-email-lvivier@redhat.com
State New
Headers show

Commit Message

Laurent Vivier May 31, 2016, 4:35 p.m. UTC
Replace (((n) + (d) - 1) /(d)) by DIV_ROUND_UP(n,d).

This patch is the result of coccinelle script
scripts/coccinelle/round.cocci

CC: qemu-block@nongnu.org
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
 block/vvfat.c      | 3 +--
 hw/block/tc58128.c | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

Comments

Eric Blake May 31, 2016, 5:50 p.m. UTC | #1
On 05/31/2016 10:35 AM, Laurent Vivier wrote:
> Replace (((n) + (d) - 1) /(d)) by DIV_ROUND_UP(n,d).
> 
> This patch is the result of coccinelle script
> scripts/coccinelle/round.cocci
> 
> CC: qemu-block@nongnu.org
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> ---
>  block/vvfat.c      | 3 +--
>  hw/block/tc58128.c | 2 +-
>  2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/block/vvfat.c b/block/vvfat.c
> index a39dbe6..6d2e21c 100644
> --- a/block/vvfat.c
> +++ b/block/vvfat.c
> @@ -1960,8 +1960,7 @@ DLOG(fprintf(stderr, "check direntry %d:\n", i); print_direntry(direntries + i))
>  		/* check file size with FAT */
>  		cluster_count = get_cluster_count_for_direntry(s, direntries + i, path2);
>  		if (cluster_count !=
> -			(le32_to_cpu(direntries[i].size) + s->cluster_size
> -			 - 1) / s->cluster_size) {
> +            DIV_ROUND_UP(le32_to_cpu(direntries[i].size), s->cluster_size)) {

The tab-vs.-space issues in this file make the patch look weird.  It's
not your fault, but you may want to manually touch up the result so that
visual indentation under 8-spaces-per-tab still looks okay.

Reviewed-by: Eric Blake <eblake@redhat.com>
diff mbox

Patch

diff --git a/block/vvfat.c b/block/vvfat.c
index a39dbe6..6d2e21c 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -1960,8 +1960,7 @@  DLOG(fprintf(stderr, "check direntry %d:\n", i); print_direntry(direntries + i))
 		/* check file size with FAT */
 		cluster_count = get_cluster_count_for_direntry(s, direntries + i, path2);
 		if (cluster_count !=
-			(le32_to_cpu(direntries[i].size) + s->cluster_size
-			 - 1) / s->cluster_size) {
+            DIV_ROUND_UP(le32_to_cpu(direntries[i].size), s->cluster_size)) {
 		    DLOG(fprintf(stderr, "Cluster count mismatch\n"));
 		    goto fail;
 		}
diff --git a/hw/block/tc58128.c b/hw/block/tc58128.c
index 7909d50..1d9f7ee 100644
--- a/hw/block/tc58128.c
+++ b/hw/block/tc58128.c
@@ -45,7 +45,7 @@  static void init_dev(tc58128_dev * dev, const char *filename)
             }
 	} else {
 	    /* Build first block with number of blocks */
-	    blocks = (ret + 528 * 32 - 1) / (528 * 32);
+            blocks = DIV_ROUND_UP(ret, 528 * 32);
 	    dev->flash_contents[0] = blocks & 0xff;
 	    dev->flash_contents[1] = (blocks >> 8) & 0xff;
 	    dev->flash_contents[2] = (blocks >> 16) & 0xff;