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* [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


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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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