Add checks for failure after retrieving the src_pll, since it
may fail. This prevents an invalid pointer dereference later in
msm_dsi_pll_get_clk_provider.
Signed-off-by: Lloyd Atkinson <latkinso@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/dsi/dsi_manager.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 8552481..d276358 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -88,6 +88,8 @@ static int dsi_mgr_setup_components(int id)
msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);
src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
+ if (!src_pll)
+ return -EINVAL;
ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
} else if (!other_dsi) {
ret = 0;
@@ -116,6 +118,8 @@ static int dsi_mgr_setup_components(int id)
msm_dsi_phy_set_usecase(clk_slave_dsi->phy,
MSM_DSI_PHY_SLAVE);
src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy);
+ if (!src_pll)
+ return -EINVAL;
ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
if (ret)
return ret;
--
QUALCOMM Canada, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
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