[PATCH 13/13] scsi: ufs: qcom: Initialize cycles_in_1us variable in ufs_qcom_set_core_clk_ctrl()

Manivannan Sadhasivam posted 13 patches 2 years ago
[PATCH 13/13] scsi: ufs: qcom: Initialize cycles_in_1us variable in ufs_qcom_set_core_clk_ctrl()
Posted by Manivannan Sadhasivam 2 years ago
In case the "core_clk_unipro" clock is not provided, "cycles_in_1us"
variable will be used as uninitialized. So initialize it with 0.

Issue reported by Smatch tool:

drivers/ufs/host/ufs-qcom.c:1336 ufs_qcom_set_core_clk_ctrl() error: uninitialized symbol 'cycles_in_1us'.
drivers/ufs/host/ufs-qcom.c:1341 ufs_qcom_set_core_clk_ctrl() error: uninitialized symbol 'cycles_in_1us'.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/ufs/host/ufs-qcom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 590a2c67cf7d..208543a62d43 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1296,7 +1296,7 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up)
 	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
 	struct list_head *head = &hba->clk_list_head;
 	struct ufs_clk_info *clki;
-	u32 cycles_in_1us;
+	u32 cycles_in_1us = 0;
 	u32 core_clk_ctrl_reg;
 	int err;
 
-- 
2.25.1
Re: [PATCH 13/13] scsi: ufs: qcom: Initialize cycles_in_1us variable in ufs_qcom_set_core_clk_ctrl()
Posted by Nitin Rawat 2 years ago

On 12/1/2023 8:44 PM, Manivannan Sadhasivam wrote:
> In case the "core_clk_unipro" clock is not provided, "cycles_in_1us"
> variable will be used as uninitialized. So initialize it with 0.
> 
> Issue reported by Smatch tool:
> 
> drivers/ufs/host/ufs-qcom.c:1336 ufs_qcom_set_core_clk_ctrl() error: uninitialized symbol 'cycles_in_1us'.
> drivers/ufs/host/ufs-qcom.c:1341 ufs_qcom_set_core_clk_ctrl() error: uninitialized symbol 'cycles_in_1us'.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
>   drivers/ufs/host/ufs-qcom.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index 590a2c67cf7d..208543a62d43 100644
> --- a/drivers/ufs/host/ufs-qcom.c
> +++ b/drivers/ufs/host/ufs-qcom.c
> @@ -1296,7 +1296,7 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up)
>   	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
>   	struct list_head *head = &hba->clk_list_head;
>   	struct ufs_clk_info *clki;
> -	u32 cycles_in_1us;
> +	u32 cycles_in_1us = 0;
>   	u32 core_clk_ctrl_reg;
>   	int err;
>   

Reviewed-by: Nitin Rawat <quic_nitirawa@quicinc.com>