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

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Message-ID: <581a9672-64b5-4df2-ac9d-bd3dbc1730e6@oss.qualcomm.com>
Date: Tue, 13 Jan 2026 15:23:30 +0800
From: Yijie Yang <yijie.yang@....qualcomm.com>
To: Val Packett <val@...kett.cool>, Vinod Koul <vkoul@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Abel Vesa <abelvesa@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Abel Vesa <abel.vesa@....qualcomm.com>, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org,
        yijie.yang@....qualcomm.com
Subject: Re: [PATCH v2] phy: qcom: edp: Fix NULL pointer dereference for phy
 v6 (x1e80100)



On 1/11/2026 4:25 PM, Val Packett wrote:
> 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,
>   };

Tested-by: Yijie Yang <yijie.yang@....qualcomm.com> # Purwa-IoT-EVK

-- 
Best Regards,
Yijie