2020-08-27 14:56:48

by Jason Yan

[permalink] [raw]
Subject: [PATCH] video: fbdev: remove set but not used 'ulBestVCO'

This addresses the following gcc warning with "make W=1":

drivers/video/fbdev/kyro/STG4000InitDevice.c: In function
‘ProgramClock’:
drivers/video/fbdev/kyro/STG4000InitDevice.c:123:6: warning: variable
‘ulBestVCO’ set but not used [-Wunused-but-set-variable]
123 | u32 ulBestVCO = 0, ulBestClk = 0, ulBestScore = 0;
| ^~~~~~~~~

Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Jason Yan <[email protected]>
---
drivers/video/fbdev/kyro/STG4000InitDevice.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/kyro/STG4000InitDevice.c b/drivers/video/fbdev/kyro/STG4000InitDevice.c
index edaeec2d9590..21875d3c2dc2 100644
--- a/drivers/video/fbdev/kyro/STG4000InitDevice.c
+++ b/drivers/video/fbdev/kyro/STG4000InitDevice.c
@@ -120,7 +120,7 @@ u32 ProgramClock(u32 refClock,
{
u32 R = 0, F = 0, OD = 0, ODIndex = 0;
u32 ulBestR = 0, ulBestF = 0, ulBestOD = 0;
- u32 ulBestVCO = 0, ulBestClk = 0, ulBestScore = 0;
+ u32 ulBestClk = 0, ulBestScore = 0;
u32 ulScore, ulPhaseScore, ulVcoScore;
u32 ulTmp = 0, ulVCO;
u32 ulScaleClockReq, ulMinClock, ulMaxClock;
@@ -189,7 +189,6 @@ u32 ProgramClock(u32 refClock,
ulScore = ulPhaseScore + ulVcoScore;

if (!ulBestScore) {
- ulBestVCO = ulVCO;
ulBestOD = OD;
ulBestF = F;
ulBestR = R;
@@ -206,7 +205,6 @@ u32 ProgramClock(u32 refClock,
but we shall keep this code in case new restrictions come into play
--------------------------------------------------------------------------*/
if ((ulScore >= ulBestScore) && (OD > 0)) {
- ulBestVCO = ulVCO;
ulBestOD = OD;
ulBestF = F;
ulBestR = R;
--
2.25.4


Subject: Re: [PATCH] video: fbdev: remove set but not used 'ulBestVCO'


On 8/27/20 3:00 PM, Jason Yan wrote:
> This addresses the following gcc warning with "make W=1":
>
> drivers/video/fbdev/kyro/STG4000InitDevice.c: In function
> ‘ProgramClock’:
> drivers/video/fbdev/kyro/STG4000InitDevice.c:123:6: warning: variable
> ‘ulBestVCO’ set but not used [-Wunused-but-set-variable]
> 123 | u32 ulBestVCO = 0, ulBestClk = 0, ulBestScore = 0;
> | ^~~~~~~~~
>
> Reported-by: Hulk Robot <[email protected]>
> Signed-off-by: Jason Yan <[email protected]>

Applied to drm-misc-next tree, thanks.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

> ---
> drivers/video/fbdev/kyro/STG4000InitDevice.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/video/fbdev/kyro/STG4000InitDevice.c b/drivers/video/fbdev/kyro/STG4000InitDevice.c
> index edaeec2d9590..21875d3c2dc2 100644
> --- a/drivers/video/fbdev/kyro/STG4000InitDevice.c
> +++ b/drivers/video/fbdev/kyro/STG4000InitDevice.c
> @@ -120,7 +120,7 @@ u32 ProgramClock(u32 refClock,
> {
> u32 R = 0, F = 0, OD = 0, ODIndex = 0;
> u32 ulBestR = 0, ulBestF = 0, ulBestOD = 0;
> - u32 ulBestVCO = 0, ulBestClk = 0, ulBestScore = 0;
> + u32 ulBestClk = 0, ulBestScore = 0;
> u32 ulScore, ulPhaseScore, ulVcoScore;
> u32 ulTmp = 0, ulVCO;
> u32 ulScaleClockReq, ulMinClock, ulMaxClock;
> @@ -189,7 +189,6 @@ u32 ProgramClock(u32 refClock,
> ulScore = ulPhaseScore + ulVcoScore;
>
> if (!ulBestScore) {
> - ulBestVCO = ulVCO;
> ulBestOD = OD;
> ulBestF = F;
> ulBestR = R;
> @@ -206,7 +205,6 @@ u32 ProgramClock(u32 refClock,
> but we shall keep this code in case new restrictions come into play
> --------------------------------------------------------------------------*/
> if ((ulScore >= ulBestScore) && (OD > 0)) {
> - ulBestVCO = ulVCO;
> ulBestOD = OD;
> ulBestF = F;
> ulBestR = R;
>