linux-kernel - [PATCH v2] phy: qcom: edp: Fix NULL pointer dereference for phy v6 (x1e80100)

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Message-ID: <20260111083317.604754-1-val@packett.cool>
Date: Sun, 11 Jan 2026 05:25:59 -0300
From: Val Packett <val@...kett.cool>
To: Vinod Koul <vkoul@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Abel Vesa <abelvesa@...nel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Val Packett <val@...kett.cool>,
	Abel Vesa <abel.vesa@....qualcomm.com>,
	linux-arm-msm@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] phy: qcom: edp: Fix NULL pointer dereference for phy v6 (x1e80100)

For Glymur SoC support, the com_clk_fwd_cfg callback was added, and a
stub implementation was added for the v4 of the hardware. However it
was omitted for the v6, causing a NULL pointer dereference oops on
Hamoa/Purwa (X1E/X1P) SoC devices. Fix by adding the appropriate stub.

Fixes: add66a6673bc ("phy: qcom: edp: Add Glymur platform support")
Reviewed-by: Abel Vesa <abel.vesa@....qualcomm.com>
Signed-off-by: Val Packett <val@...kett.cool>
---
v2: pull R-b, reuse v4 function as suggested by Konrad
v1: https://lore.kernel.org/all/20260109045214.5983-1-val@packett.cool/

 drivers/phy/qualcomm/phy-qcom-edp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c
index 13feab99feec..7372de05a0b8 100644
--- a/drivers/phy/qualcomm/phy-qcom-edp.c
+++ b/drivers/phy/qualcomm/phy-qcom-edp.c
@@ -758,6 +758,7 @@ static const struct phy_ver_ops qcom_edp_phy_ops_v6 = {
 	.com_power_on		= qcom_edp_phy_power_on_v6,
 	.com_resetsm_cntrl	= qcom_edp_phy_com_resetsm_cntrl_v6,
 	.com_bias_en_clkbuflr	= qcom_edp_com_bias_en_clkbuflr_v6,
+	.com_clk_fwd_cfg	= qcom_edp_com_clk_fwd_cfg_v4,
 	.com_configure_pll	= qcom_edp_com_configure_pll_v6,
 	.com_configure_ssc	= qcom_edp_com_configure_ssc_v6,
 };
-- 
2.51.2