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authorLloyd Atkinson <latkinso@codeaurora.org>2018-01-16 16:26:01 -0500
committerRob Clark <robdclark@gmail.com>2018-02-20 10:41:20 -0500
commitf0efc831d9439589efaf6406695470eca93ba08d (patch)
treec08b08600d233fc1e5607900b874e2e2c7f2e9d0 /drivers/gpu/drm/msm/dsi/phy
parent933519a5a269d8460450545adefcb5caec622cac (diff)
drm/msm/dsi: check for failure on retrieving pll in dsi manager
Make msm_dsi_pll_init consistently return an error code instead of NULL when pll initialization fails so that later pll retrieval can check against an error code. Add checks for these failures after retrieval of src_pll to avoid invalid pointer dereferences later in msm_dsi_pll_get_clk_provider. Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/phy')
-rw-r--r--drivers/gpu/drm/msm/dsi/phy/dsi_phy.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index 790ca280cbfd..c8bfaa780651 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -503,10 +503,10 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
goto fail;
phy->pll = msm_dsi_pll_init(pdev, phy->cfg->type, phy->id);
- if (!phy->pll)
+ if (IS_ERR_OR_NULL(phy->pll))
dev_info(dev,
- "%s: pll init failed, need separate pll clk driver\n",
- __func__);
+ "%s: pll init failed: %ld, need separate pll clk driver\n",
+ __func__, PTR_ERR(phy->pll));
dsi_phy_disable_resource(phy);