* [PATCH] drm/msm: Fix uninitialized var usage in dsi_phy_28nm_8960.c
@ 2021-05-07 14:16 Sean Paul
2021-05-07 16:43 ` Rob Clark
0 siblings, 1 reply; 3+ messages in thread
From: Sean Paul @ 2021-05-07 14:16 UTC (permalink / raw)
To: dri-devel
Cc: Sean Paul, Dmitry Baryshkov, Stephen Boyd, Abhinav Kumar,
Rob Clark, Rob Clark, Sean Paul, David Airlie, Daniel Vetter,
linux-arm-msm, freedreno
From: Sean Paul <seanpaul@chromium.org>
This patch fixes the following error:
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c:425:11: error: variable 'parent_name' is uninitialized when used here
[-Werror,-Wuninitialized]
snprintf(parent_name, 32, "dsi%dvco_clk", pll_28nm->phy->id);
^~~~~~~~~~~
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c:385:30:
note: initialize the variable 'parent_name' to silence this warning
char *clk_name, *parent_name, *vco_name;
^
= NULL
1 error generated.
make[5]: ***
[scripts/Makefile.build:279: drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.o] Error 1
It looks like the allocation was inadvertently deleted.
Fixes: 5d13459650b3 ("drm/msm/dsi: push provided clocks handling into a generic code")
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Stephen Boyd <swboyd@chromium.org>
Cc: Abhinav Kumar <abhinavk@codeaurora.org>
Cc: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
---
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
index 582b1428f971..86e40a0d41a3 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
@@ -405,6 +405,10 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov
if (!vco_name)
return -ENOMEM;
+ parent_name = devm_kzalloc(dev, 32, GFP_KERNEL);
+ if (!parent_name)
+ return -ENOMEM;
+
clk_name = devm_kzalloc(dev, 32, GFP_KERNEL);
if (!clk_name)
return -ENOMEM;
--
Sean Paul, Software Engineer, Google / Chromium OS
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] drm/msm: Fix uninitialized var usage in dsi_phy_28nm_8960.c
2021-05-07 14:16 [PATCH] drm/msm: Fix uninitialized var usage in dsi_phy_28nm_8960.c Sean Paul
@ 2021-05-07 16:43 ` Rob Clark
2021-05-07 17:02 ` Rob Clark
0 siblings, 1 reply; 3+ messages in thread
From: Rob Clark @ 2021-05-07 16:43 UTC (permalink / raw)
To: Sean Paul
Cc: dri-devel, Sean Paul, Dmitry Baryshkov, Stephen Boyd,
Abhinav Kumar, Rob Clark, David Airlie, Daniel Vetter,
linux-arm-msm, freedreno
On Fri, May 7, 2021 at 7:16 AM Sean Paul <sean@poorly.run> wrote:
>
> From: Sean Paul <seanpaul@chromium.org>
>
> This patch fixes the following error:
>
> drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c:425:11: error: variable 'parent_name' is uninitialized when used here
> [-Werror,-Wuninitialized]
> snprintf(parent_name, 32, "dsi%dvco_clk", pll_28nm->phy->id);
> ^~~~~~~~~~~
> drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c:385:30:
> note: initialize the variable 'parent_name' to silence this warning
> char *clk_name, *parent_name, *vco_name;
> ^
> = NULL
> 1 error generated.
> make[5]: ***
> [scripts/Makefile.build:279: drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.o] Error 1
>
> It looks like the allocation was inadvertently deleted.
>
> Fixes: 5d13459650b3 ("drm/msm/dsi: push provided clocks handling into a generic code")
>
> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Cc: Stephen Boyd <swboyd@chromium.org>
> Cc: Abhinav Kumar <abhinavk@codeaurora.org>
> Cc: Rob Clark <robdclark@chromium.org>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
Thanks, I'll pick this up for next -fixes pr
BR,
-R
> ---
> drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> index 582b1428f971..86e40a0d41a3 100644
> --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> @@ -405,6 +405,10 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov
> if (!vco_name)
> return -ENOMEM;
>
> + parent_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> + if (!parent_name)
> + return -ENOMEM;
> +
> clk_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> if (!clk_name)
> return -ENOMEM;
> --
> Sean Paul, Software Engineer, Google / Chromium OS
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] drm/msm: Fix uninitialized var usage in dsi_phy_28nm_8960.c
2021-05-07 16:43 ` Rob Clark
@ 2021-05-07 17:02 ` Rob Clark
0 siblings, 0 replies; 3+ messages in thread
From: Rob Clark @ 2021-05-07 17:02 UTC (permalink / raw)
To: Sean Paul
Cc: dri-devel, Sean Paul, Dmitry Baryshkov, Stephen Boyd,
Abhinav Kumar, Rob Clark, David Airlie, Daniel Vetter,
linux-arm-msm, freedreno
On Fri, May 7, 2021 at 9:43 AM Rob Clark <robdclark@gmail.com> wrote:
>
> On Fri, May 7, 2021 at 7:16 AM Sean Paul <sean@poorly.run> wrote:
> >
> > From: Sean Paul <seanpaul@chromium.org>
> >
> > This patch fixes the following error:
> >
> > drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c:425:11: error: variable 'parent_name' is uninitialized when used here
> > [-Werror,-Wuninitialized]
> > snprintf(parent_name, 32, "dsi%dvco_clk", pll_28nm->phy->id);
> > ^~~~~~~~~~~
> > drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c:385:30:
> > note: initialize the variable 'parent_name' to silence this warning
> > char *clk_name, *parent_name, *vco_name;
> > ^
> > = NULL
> > 1 error generated.
> > make[5]: ***
> > [scripts/Makefile.build:279: drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.o] Error 1
> >
> > It looks like the allocation was inadvertently deleted.
> >
> > Fixes: 5d13459650b3 ("drm/msm/dsi: push provided clocks handling into a generic code")
> >
> > Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> > Cc: Stephen Boyd <swboyd@chromium.org>
> > Cc: Abhinav Kumar <abhinavk@codeaurora.org>
> > Cc: Rob Clark <robdclark@chromium.org>
> > Signed-off-by: Sean Paul <seanpaul@chromium.org>
>
> Thanks, I'll pick this up for next -fixes pr
Oh, sorry, I lied, I already had the same fix from Dmitry
BR,
-R
>
> > ---
> > drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> > index 582b1428f971..86e40a0d41a3 100644
> > --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> > +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> > @@ -405,6 +405,10 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov
> > if (!vco_name)
> > return -ENOMEM;
> >
> > + parent_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> > + if (!parent_name)
> > + return -ENOMEM;
> > +
> > clk_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> > if (!clk_name)
> > return -ENOMEM;
> > --
> > Sean Paul, Software Engineer, Google / Chromium OS
> >
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-05-07 14:16 [PATCH] drm/msm: Fix uninitialized var usage in dsi_phy_28nm_8960.c Sean Paul
2021-05-07 16:43 ` Rob Clark
2021-05-07 17:02 ` Rob Clark
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