2019-10-09 09:43:26

by Colin King

[permalink] [raw]
Subject: [PATCH][next] drm/i915: remove redundant variable err

From: Colin Ian King <[email protected]>

An earlier commit removed any error assignments to err and we
are now left with a zero assignment to err and a check that is
always false. Clean this up by removing the redundant variable
err and the error check.

Addresses-Coverity: ("'Constant' variable guard")
Signed-off-by: Colin Ian King <[email protected]>
---
drivers/gpu/drm/i915/i915_active.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
index aa37c07004b9..67305165c12a 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -438,7 +438,6 @@ static void enable_signaling(struct i915_active_fence *active)
int i915_active_wait(struct i915_active *ref)
{
struct active_node *it, *n;
- int err = 0;

might_sleep();

@@ -456,8 +455,6 @@ int i915_active_wait(struct i915_active *ref)
/* Any fence added after the wait begins will not be auto-signaled */

i915_active_release(ref);
- if (err)
- return err;

if (wait_var_event_interruptible(ref, i915_active_is_idle(ref)))
return -EINTR;
--
2.20.1


2019-10-09 09:50:00

by Chris Wilson

[permalink] [raw]
Subject: Re: [PATCH][next] drm/i915: remove redundant variable err

Quoting Colin King (2019-10-09 10:39:35)
> From: Colin Ian King <[email protected]>
>
> An earlier commit removed any error assignments to err and we
> are now left with a zero assignment to err and a check that is
> always false. Clean this up by removing the redundant variable
> err and the error check.

Oh, we add one again shortly. Might as well wait.
-Chris

2019-10-09 09:54:02

by Jani Nikula

[permalink] [raw]
Subject: Re: [PATCH][next] drm/i915: remove redundant variable err

On Wed, 09 Oct 2019, Colin King <[email protected]> wrote:
> From: Colin Ian King <[email protected]>
>
> An earlier commit removed any error assignments to err and we
> are now left with a zero assignment to err and a check that is
> always false. Clean this up by removing the redundant variable
> err and the error check.
>
> Addresses-Coverity: ("'Constant' variable guard")
> Signed-off-by: Colin Ian King <[email protected]>

Fixes: b1e3177bd1d8 ("drm/i915: Coordinate i915_active with its own mutex")
Reviewed-by: Jani Nikula <[email protected]>


BR,
Jani.


> ---
> drivers/gpu/drm/i915/i915_active.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
> index aa37c07004b9..67305165c12a 100644
> --- a/drivers/gpu/drm/i915/i915_active.c
> +++ b/drivers/gpu/drm/i915/i915_active.c
> @@ -438,7 +438,6 @@ static void enable_signaling(struct i915_active_fence *active)
> int i915_active_wait(struct i915_active *ref)
> {
> struct active_node *it, *n;
> - int err = 0;
>
> might_sleep();
>
> @@ -456,8 +455,6 @@ int i915_active_wait(struct i915_active *ref)
> /* Any fence added after the wait begins will not be auto-signaled */
>
> i915_active_release(ref);
> - if (err)
> - return err;
>
> if (wait_var_event_interruptible(ref, i915_active_is_idle(ref)))
> return -EINTR;

--
Jani Nikula, Intel Open Source Graphics Center