[PATCH -next] soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk

[PATCH -next] soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk

[Wang Hai]

Fix smatch warning:

drivers/soc/fsl/qe/ucc.c:526
 ucc_set_tdm_rxtx_clk() warn: unsigned 'tdm_num' is never less than zero.

'tdm_num' is u32 type, never less than zero.

Signed-off-by: Wang Hai <wanghai38@huawei.com>
---
 drivers/soc/fsl/qe/ucc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/fsl/qe/ucc.c b/drivers/soc/fsl/qe/ucc.c
index cac0fb7693a0..21dbcd787cd5 100644
--- a/drivers/soc/fsl/qe/ucc.c
+++ b/drivers/soc/fsl/qe/ucc.c
@@ -523,7 +523,7 @@ int ucc_set_tdm_rxtx_clk(u32 tdm_num, enum qe_clock clock,
 
 	qe_mux_reg = &qe_immr->qmx;
 
-	if (tdm_num > 7 || tdm_num < 0)
+	if (tdm_num > 7)
 		return -EINVAL;
 
 	/* The communications direction must be RX or TX */
-- 
2.17.1

Re: [PATCH -next] soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk

[Li Yang]

On Tue, Aug 4, 2020 at 9:04 AM Wang Hai <wanghai38@huawei.com> wrote:
>
> Fix smatch warning:
>
> drivers/soc/fsl/qe/ucc.c:526
>  ucc_set_tdm_rxtx_clk() warn: unsigned 'tdm_num' is never less than zero.
>
> 'tdm_num' is u32 type, never less than zero.
>
> Signed-off-by: Wang Hai <wanghai38@huawei.com>

Applied for next.  Thanks.

> ---
>  drivers/soc/fsl/qe/ucc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/soc/fsl/qe/ucc.c b/drivers/soc/fsl/qe/ucc.c
> index cac0fb7693a0..21dbcd787cd5 100644
> --- a/drivers/soc/fsl/qe/ucc.c
> +++ b/drivers/soc/fsl/qe/ucc.c
> @@ -523,7 +523,7 @@ int ucc_set_tdm_rxtx_clk(u32 tdm_num, enum qe_clock clock,
>
>         qe_mux_reg = &qe_immr->qmx;
>
> -       if (tdm_num > 7 || tdm_num < 0)
> +       if (tdm_num > 7)
>                 return -EINVAL;
>
>         /* The communications direction must be RX or TX */
> --
> 2.17.1
>