Eric Lee / linux-smarc-t335x-v3.2

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Commit 1368c4f2482c9e06bcb297217433818b171cc9e3

Authored by Vignesh Babu BM
Committed by Linus Torvalds
1 parent e1b5c1d3da
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

is_power_of_2 in fs/block_dev.c 

Replace (n & (n-1)) in the context of power of 2 checks with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff

... ... @@ -22,6 +22,7 @@
22 22 #include <linux/mount.h>
23 23 #include <linux/uio.h>
24 24 #include <linux/namei.h>
  25 +#include <linux/log2.h>
25 26 #include <asm/uaccess.h>
26 27 #include "internal.h"
27 28  
... ... @@ -67,7 +68,7 @@
67 68 int set_blocksize(struct block_device *bdev, int size)
68 69 {
69 70 /* Size must be a power of two, and between 512 and PAGE_SIZE */
70   - if (size > PAGE_SIZE || size < 512 || (size & (size-1)))
  71 + if (size > PAGE_SIZE || size < 512 || !is_power_of_2(size))
71 72 return -EINVAL;
72 73  
73 74 /* Size cannot be smaller than the size supported by the device */