[lvc-project] [PATCH v1] usb: typec: tcpm: qcom: initialize currsrc explicitly

[Bryan O'Donoghue]

On 13/07/2026 19:25, Alexey V. Vissarionov wrote:
> When regmap_read() fails, the execution goes to done: label, where
> currsrc is passed to rp_sel_to_name() and used as an index after a
> proper check. However, to make this situation easier to notice, an
> explicit initialization of currsrc with obviously impossible value
> is suggested. Alas, we can't simply use zero value here because it
> means TYPEC_SRC_RP_SEL_80UA.
> 
> Found by ALT Linux Team (altlinux.org) and Linux Verification Center
> (linuxtesting.org) using SVACE.
> 
> Signed-off-by: Alexey V. Vissarionov <gremlin at altlinux.org>
> ---
>   drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c
> index bf985efe1cd6bea4..d7cb69cf6044841b 100644
> --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c
> @@ -461,8 +461,8 @@ static int qcom_pmic_typec_port_set_cc(struct tcpc_dev *tcpc,
>   	struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
>   	struct pmic_typec_port *pmic_typec_port = tcpm->pmic_typec_port;
>   	struct device *dev = pmic_typec_port->dev;
> -	unsigned int mode, currsrc;
> -	unsigned int misc;
> +	unsigned int currsrc = 0xFF; /* error, easy to notice in the log */
> +	unsigned int mode, misc;
>   	unsigned long flags;
>   	int ret;
> 
> 
> 
> --
> Alexey V. Vissarionov
> gremlin ПРИ altlinux ТЧК org; +vii-cmiii-ccxxix-lxxix-xlii
> GPG: 0D92F19E1C0DC36E27F61A29CD17E2B43D879005 @ hkp://keys.gnupg.net
> 
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>