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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-06-09 15:07:42 +0300
committerMichael S. Tsirkin <mst@redhat.com>2017-07-25 16:37:34 +0300
commitf53d5aa050dafe19bb4a1e37d73880aee2490a68 (patch)
tree3ddc3d6babe1d30029d4fde4f50e225363d2222c /drivers/block/virtio_blk.c
parent520eccdfe187591a51ea9ab4c1a024ae4d0f68d9 (diff)
virtio_blk: Use sysfs_match_string() helper
Use sysfs_match_string() helper instead of open coded variant. Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'drivers/block/virtio_blk.c')
-rw-r--r--drivers/block/virtio_blk.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 4e02aa5fdac0..1498b899a593 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -541,12 +541,9 @@ virtblk_cache_type_store(struct device *dev, struct device_attribute *attr,
int i;
BUG_ON(!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_CONFIG_WCE));
- for (i = ARRAY_SIZE(virtblk_cache_types); --i >= 0; )
- if (sysfs_streq(buf, virtblk_cache_types[i]))
- break;
-
+ i = sysfs_match_string(virtblk_cache_types, buf);
if (i < 0)
- return -EINVAL;
+ return i;
virtio_cwrite8(vdev, offsetof(struct virtio_blk_config, wce), i);
virtblk_update_cache_mode(vdev);