diff mbox series

[next] HID: uclogic: remove redudant duplicated null check on ver_ptr

Message ID 20190302222338.8023-1-colin.king@canonical.com (mailing list archive)
State Mainlined
Commit 1cbbd85fbcdce186649ce778ff1e08e3df35d285
Delegated to: Jiri Kosina
Headers show
Series [next] HID: uclogic: remove redudant duplicated null check on ver_ptr | expand

Commit Message

Colin King March 2, 2019, 10:23 p.m. UTC
From: Colin Ian King <colin.king@canonical.com>

Currently ver_ptr is being null checked twice, once before calling
usb_string and once afterwards.  The second null check is redundant
and can be removed, remove it.

Detected by CoverityScan, CID#1477308 ("Logically dead code")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/hid/hid-uclogic-params.c | 4 ----
 1 file changed, 4 deletions(-)

Comments

Benjamin Tissoires March 11, 2019, 2:55 p.m. UTC | #1
On Sat, Mar 2, 2019 at 11:23 PM Colin King <colin.king@canonical.com> wrote:
>
> From: Colin Ian King <colin.king@canonical.com>
>
> Currently ver_ptr is being null checked twice, once before calling
> usb_string and once afterwards.  The second null check is redundant
> and can be removed, remove it.
>
> Detected by CoverityScan, CID#1477308 ("Logically dead code")
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---

Applied to for-5.1/upstream-fixes

Cheers,
Benjamin

>  drivers/hid/hid-uclogic-params.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c
> index 7710d9f957da..0187c9f8fc22 100644
> --- a/drivers/hid/hid-uclogic-params.c
> +++ b/drivers/hid/hid-uclogic-params.c
> @@ -735,10 +735,6 @@ static int uclogic_params_huion_init(struct uclogic_params *params,
>                 goto cleanup;
>         }
>         rc = usb_string(udev, 201, ver_ptr, ver_len);
> -       if (ver_ptr == NULL) {
> -               rc = -ENOMEM;
> -               goto cleanup;
> -       }
>         if (rc == -EPIPE) {
>                 *ver_ptr = '\0';
>         } else if (rc < 0) {
> --
> 2.20.1
>
diff mbox series

Patch

diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c
index 7710d9f957da..0187c9f8fc22 100644
--- a/drivers/hid/hid-uclogic-params.c
+++ b/drivers/hid/hid-uclogic-params.c
@@ -735,10 +735,6 @@  static int uclogic_params_huion_init(struct uclogic_params *params,
 		goto cleanup;
 	}
 	rc = usb_string(udev, 201, ver_ptr, ver_len);
-	if (ver_ptr == NULL) {
-		rc = -ENOMEM;
-		goto cleanup;
-	}
 	if (rc == -EPIPE) {
 		*ver_ptr = '\0';
 	} else if (rc < 0) {