2020-04-17 16:12:51

by Colin King

Subject: [PATCH][next] drm/i915: remove redundant assignment to variable test_result

From: Colin Ian King <[email protected]>

The variable test_result is being initialized with a value that is
never read and it is being updated later with a new value. The
initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <[email protected]>
---
drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index d4fcc9583869..55697c5e251a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5567,7 +5567,7 @@ void intel_dp_process_phy_request(struct intel_dp *intel_dp)

static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
{
- u8 test_result = DP_TEST_NAK;
+ u8 test_result;

test_result = intel_dp_prepare_phytest(intel_dp);
if (test_result != DP_TEST_ACK)
--
2.25.1

2020-04-18 06:49:20

by Chris Wilson

Subject: Re: [PATCH][next] drm/i915: remove redundant assignment to variable test_result

Quoting Colin King (2020-04-17 17:08:29)
> From: Colin Ian King <[email protected]>
>
> The variable test_result is being initialized with a value that is
> never read and it is being updated later with a new value. The
> initialization is redundant and can be removed.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <[email protected]>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index d4fcc9583869..55697c5e251a 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5567,7 +5567,7 @@ void intel_dp_process_phy_request(struct intel_dp *intel_dp)
>
> static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
> {
> - u8 test_result = DP_TEST_NAK;
> + u8 test_result;
>
> test_result = intel_dp_prepare_phytest(intel_dp);

Yes, this is definitely being overwritten this time :)
Reviewed-by: Chris Wilson <[email protected]>
-Chris