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[PATCH 2/5] blk-throttle: Move an assignment for the variable "ret" in tg_set_conf()

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  [PATCH 2/5] blk-throttle: Move an assignment for the variable "ret"  in tg_set_conf() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-22 09:40 +0100
    Re: [PATCH 2/5] blk-throttle: Move an assignment for the variable  "ret" in tg_set_conf() Johannes Thumshirn <jthumshirn@suse.de> - 2017-01-23 10:20 +0100

#1564334 — [PATCH 2/5] blk-throttle: Move an assignment for the variable "ret" in tg_set_conf()

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 21 Jan 2017 21:40:38 +0100

A local variable was set to an error code before a concrete error situation
was detected. Thus move the corresponding assignment into an if branch
to indicate a software failure there.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 block/blk-throttle.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 51d112deb02e..b392b48310ba 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -1191,9 +1191,10 @@ static ssize_t tg_set_conf(struct kernfs_open_file *of,
 	if (ret)
 		return ret;
 
-	ret = -EINVAL;
-	if (sscanf(ctx.body, "%llu", &v) != 1)
+	if (sscanf(ctx.body, "%llu", &v) != 1) {
+		ret = -EINVAL;
 		goto out_finish;
+	}
 	if (!v)
 		v = -1;
 
-- 
2.11.0

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#1564795 — Re: [PATCH 2/5] blk-throttle: Move an assignment for the variable "ret" in tg_set_conf()

On Sun, Jan 22, 2017 at 09:32:19AM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Sat, 21 Jan 2017 21:40:38 +0100
> 
> A local variable was set to an error code before a concrete error situation
> was detected. Thus move the corresponding assignment into an if branch
> to indicate a software failure there.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---

See my answer to the last patch.

-- 
Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850

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