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Subject[PATCH] loop: fix passing zero to 'PTR_ERR' warning
Date
Fix a static code checker warning:
drivers/block/loop.c:798 loop_attr_backing_file_show()
warn: passing zero to 'PTR_ERR'

Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
---
drivers/block/loop.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 475e1a7..bcada87 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -795,7 +795,7 @@ static ssize_t loop_attr_backing_file_show(struct loop_device *lo, char *buf)
spin_unlock_irq(&lo->lo_lock);

if (IS_ERR_OR_NULL(p))
- ret = PTR_ERR(p);
+ ret = PTR_ERR_OR_ZERO(p);
else {
ret = strlen(p);
memmove(buf, p, ret);
--
2.7.4


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