RE: [PATCH 2/6] fpga: zynqmp: Initialized variables before using it

[Nava kishore Manne]

Hi Yilun,

	Thanks for providing the review comments.
Please find my response inline.

> -----Original Message-----
> From: Xu Yilun <yilun.xu@xxxxxxxxx>
> Sent: Friday, March 11, 2022 7:58 PM
> To: Nava kishore Manne <navam@xxxxxxxxxx>
> Cc: mdf@xxxxxxxxxx; hao.wu@xxxxxxxxx; trix@xxxxxxxxxx; Michal Simek
> <michals@xxxxxxxxxx>; linux-fpga@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 2/6] fpga: zynqmp: Initialized variables before using it
> 
> On Tue, Mar 08, 2022 at 03:15:15PM +0530, Nava kishore Manne wrote:
> > This patch initialized variables with the proper value.
> > Addresses-Coverity: "uninit_use: Using uninitialized value"
> >
> > Signed-off-by: Nava kishore Manne <nava.manne@xxxxxxxxxx>
> > ---
> >  drivers/fpga/zynqmp-fpga.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c
> > index c60f20949c47..e931d69819a7 100644
> > --- a/drivers/fpga/zynqmp-fpga.c
> > +++ b/drivers/fpga/zynqmp-fpga.c
> > @@ -41,7 +41,7 @@ static int zynqmp_fpga_ops_write(struct
> fpga_manager *mgr,
> >  				 const char *buf, size_t size)
> >  {
> >  	struct zynqmp_fpga_priv *priv;
> > -	dma_addr_t dma_addr;
> > +	dma_addr_t dma_addr = 0;
> 
> The first use of this variable is as an output parameter:
> 
> 	kbuf = dma_alloc_coherent(priv->dev, size, &dma_addr,
> GFP_KERNEL);
> 
> So I don't think it needs to be initialized as 0.
> 

This issue is found by Coverity Scan, Whether this param is input/output this fix will not impact the actual functionality.
In order to fix the issues reported by the Coverity tool, this fix is needed.

Regards,
Navakishore.