2016-03-17 10:39:41

by Dan Carpenter

[permalink] [raw]
Subject: [patch 2/2] drm/exynos: mic: remove some dead code

We know "ret" is zero and the test makes static checkers complain so
let's delete this printk.

Signed-off-by: Dan Carpenter <[email protected]>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index 890c9b1..12db353 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -130,8 +130,6 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
val &= ~(MIC0_RGB_MUX | MIC0_I80_MUX | MIC0_ON_MUX);

regmap_write(mic->sysreg, DSD_CFG_MUX, val);
- if (ret)
- DRM_ERROR("mic: Failed to read system register\n");
}

static int mic_sw_reset(struct exynos_mic *mic)


Subject: Re: [patch 2/2] drm/exynos: mic: remove some dead code

Hi Dan,

2016년 03월 17일 19:39에 Dan Carpenter 이(가) 쓴 글:
> We know "ret" is zero and the test makes static checkers complain so
> let's delete this printk.
>
> Signed-off-by: Dan Carpenter <[email protected]>
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> index 890c9b1..12db353 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> @@ -130,8 +130,6 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
> val &= ~(MIC0_RGB_MUX | MIC0_I80_MUX | MIC0_ON_MUX);
>
> regmap_write(mic->sysreg, DSD_CFG_MUX, val);
> - if (ret)
> - DRM_ERROR("mic: Failed to read system register\n");

I think we missed to keep return value from regmap_write function,
ret = regmap_write(mic->sysreg, ....);
if (ret)
...

Thanks,
Inki Dae

> }
>
> static int mic_sw_reset(struct exynos_mic *mic)
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>

2016-03-25 20:06:26

by Dan Carpenter

[permalink] [raw]
Subject: [patch 2/2 v2] drm/exynos: fix a warning message

The "ret = regmap_write()" assignment was missing so this error message
is never printed.

Signed-off-by: Dan Carpenter <[email protected]>
---
v2: in v1 I just deleted the error message

diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index 9869d70..ea2ea17 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -129,7 +129,7 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
} else
val &= ~(MIC0_RGB_MUX | MIC0_I80_MUX | MIC0_ON_MUX);

- regmap_write(mic->sysreg, DSD_CFG_MUX, val);
+ ret = regmap_write(mic->sysreg, DSD_CFG_MUX, val);
if (ret)
DRM_ERROR("mic: Failed to read system register\n");
}

2016-03-25 20:09:26

by Dan Carpenter

[permalink] [raw]
Subject: Re: [patch 2/2] drm/exynos: mic: remove some dead code

On Fri, Mar 25, 2016 at 05:51:20PM +0900, Inki Dae wrote:
> Hi Dan,
>
> 2016년 03월 17일 19:39에 Dan Carpenter 이(가) 쓴 글:
> > We know "ret" is zero and the test makes static checkers complain so
> > let's delete this printk.
> >
> > Signed-off-by: Dan Carpenter <[email protected]>
> >
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> > index 890c9b1..12db353 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> > @@ -130,8 +130,6 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
> > val &= ~(MIC0_RGB_MUX | MIC0_I80_MUX | MIC0_ON_MUX);
> >
> > regmap_write(mic->sysreg, DSD_CFG_MUX, val);
> > - if (ret)
> > - DRM_ERROR("mic: Failed to read system register\n");
>
> I think we missed to keep return value from regmap_write function,
> ret = regmap_write(mic->sysreg, ....);
> if (ret)
> ...

Yeah. You're right.

regards,
dan carpenter