RE: [PATCH] fpga: dfl: afu: Corrected error handling levels

["Wu, Hao" <hao.wu@intel.com>]

> -----Original Message-----
> From: Xu, Yilun <yilun.xu@intel.com>
> Sent: Thursday, May 14, 2020 10:30 AM
> To: Souptick Joarder <jrdr.linux@gmail.com>
> Cc: Wu, Hao <hao.wu@intel.com>; mdf@kernel.org; linux-
> fpga@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH] fpga: dfl: afu: Corrected error handling levels
> 
> The patch looks good to me.
> 
> Maybe we could add the Fixes tag:
>   Fixes: fa8dda1edef9 (fpga: dfl: afu: add
> DFL_FPGA_PORT_DMA_MAP/UNMAP ioctls support)

Thanks for catching this problem.

With this line,
Acked-by: Wu Hao <hao.wu@intel.com>

Thanks!
Hao

> 
> Thanks,
> Yilun
> 
> On Thu, May 14, 2020 at 12:52:05AM +0530, Souptick Joarder wrote:
> > Corrected error handling goto sequnece. Level put_pages should
> > be called when pinned pages >= 0 && pinned != npages. Level
> > free_pages should be called when pinned pages < 0.
> >
> > Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
> > ---
> >  drivers/fpga/dfl-afu-dma-region.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/fpga/dfl-afu-dma-region.c b/drivers/fpga/dfl-afu-dma-
> region.c
> > index 62f9244..5942343 100644
> > --- a/drivers/fpga/dfl-afu-dma-region.c
> > +++ b/drivers/fpga/dfl-afu-dma-region.c
> > @@ -61,10 +61,10 @@ static int afu_dma_pin_pages(struct
> dfl_feature_platform_data *pdata,
> >  				     region->pages);
> >  	if (pinned < 0) {
> >  		ret = pinned;
> > -		goto put_pages;
> > +		goto free_pages;
> >  	} else if (pinned != npages) {
> >  		ret = -EFAULT;
> > -		goto free_pages;
> > +		goto put_pages;
> >  	}
> >
> >  	dev_dbg(dev, "%d pages pinned\n", pinned);
> > --
> > 1.9.1