2015-06-24 11:46:00

by SF Markus Elfring

Subject: [PATCH] ACPICA: Delete an unnecessary check before the function call "acpi_ds_delete_walk_state"

From: Markus Elfring <[email protected]>
Date: Wed, 24 Jun 2015 13:33:47 +0200

The acpi_ds_delete_walk_state() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <[email protected]>
---
drivers/acpi/acpica/dsmethod.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 85bb951..188b254 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -574,10 +574,7 @@ cleanup:
/* On error, we must terminate the method properly */

acpi_ds_terminate_control_method(obj_desc, next_walk_state);
- if (next_walk_state) {
- acpi_ds_delete_walk_state(next_walk_state);
- }
-
+ acpi_ds_delete_walk_state(next_walk_state);
return_ACPI_STATUS(status);
}

--
2.4.4

2015-06-24 15:16:40

by Moore, Robert

Subject: RE: [PATCH] ACPICA: Delete an unnecessary check before the function call "acpi_ds_delete_walk_state"

Got it, thanks.


> -----Original Message-----
> From: SF Markus Elfring [mailto:[email protected]]
> Sent: Wednesday, June 24, 2015 4:46 AM
> To: Len Brown; Zheng, Lv; Wysocki, Rafael J; Moore, Robert; linux-
> [email protected]; [email protected]
> Cc: LKML; [email protected]; Julia Lawall
> Subject: [PATCH] ACPICA: Delete an unnecessary check before the function
> call "acpi_ds_delete_walk_state"
>
> From: Markus Elfring <[email protected]>
> Date: Wed, 24 Jun 2015 13:33:47 +0200
>
> The acpi_ds_delete_walk_state() function tests whether its argument is
> NULL and then returns immediately. Thus the test around the call is not
> needed.
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <[email protected]>
> ---
> drivers/acpi/acpica/dsmethod.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/acpi/acpica/dsmethod.c
> b/drivers/acpi/acpica/dsmethod.c index 85bb951..188b254 100644
> --- a/drivers/acpi/acpica/dsmethod.c
> +++ b/drivers/acpi/acpica/dsmethod.c
> @@ -574,10 +574,7 @@ cleanup:
> /* On error, we must terminate the method properly */
>
> acpi_ds_terminate_control_method(obj_desc, next_walk_state);
> - if (next_walk_state) {
> - acpi_ds_delete_walk_state(next_walk_state);
> - }
> -
> + acpi_ds_delete_walk_state(next_walk_state);
> return_ACPI_STATUS(status);
> }
>
> --
> 2.4.4

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