RE: [PATCH] soc: xilinx: xlnx_vcu: Use bitwise & rather than logical && on clkoutdiv

[Dhaval Rajeshbhai Shah]

Hi,

> -----Original Message-----
> From: Gustavo A. R. Silva [mailto:garsilva@xxxxxxxxxxxxxx]
> Sent: Monday, January 15, 2018 11:15 AM
> To: Michal Simek <michal.simek@xxxxxxxxxx>; Dhaval Rajeshbhai Shah
> <DSHAH@xxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> Gustavo A. R. Silva <garsilva@xxxxxxxxxxxxxx>
> Subject: [PATCH] soc: xilinx: xlnx_vcu: Use bitwise & rather than logical && on
> clkoutdiv
> 
> Currently clkoutdiv is being operated on by a logical && operator rather than a
> bitwise & operator. This looks incorrect as these should be bit flag operations.
> 
> Addresses-Coverity-ID: 1463959 ("Logical vs. bitwise operator")
> Fixes: cee8113a295a ("soc: xilinx: xlnx_vcu: Add Xilinx ZYNQMP VCU logicoreIP
> init driver")
> Signed-off-by: Gustavo A. R. Silva <garsilva@xxxxxxxxxxxxxx>
> ---
>  drivers/soc/xilinx/xlnx_vcu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/xilinx/xlnx_vcu.c b/drivers/soc/xilinx/xlnx_vcu.c index
> c1d6f1b..a840c02 100644
> --- a/drivers/soc/xilinx/xlnx_vcu.c
> +++ b/drivers/soc/xilinx/xlnx_vcu.c
> @@ -334,7 +334,7 @@ static int xvcu_set_vcu_pll_info(struct xvcu_device
> *xvcu)
>  	 */
>  	vcu_pll_ctrl = xvcu_read(xvcu->vcu_slcr_ba, VCU_PLL_CTRL);
>  	clkoutdiv = vcu_pll_ctrl >> VCU_PLL_CTRL_CLKOUTDIV_SHIFT;
> -	clkoutdiv = clkoutdiv && VCU_PLL_CTRL_CLKOUTDIV_MASK;
> +	clkoutdiv = clkoutdiv & VCU_PLL_CTRL_CLKOUTDIV_MASK;
>  	if (clkoutdiv != 1) {
>  		dev_err(xvcu->dev, "clkoutdiv value is invalid\n");
>  		return -EINVAL;
> --
> 2.7.4

Acked-by: Dhaval Shah <dshah@xxxxxxxxxx>

Thanks & Regards,
Dhaval