linux-kernel - RE: [PATCH v2 1/2] i2c: imx: fix dma_request

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Date:   Fri, 25 Jan 2019 09:20:51 +0000
From:   Laurentiu Tudor <laurentiu.tudor@....com>
To:     Wolfram Sang <wsa@...-dreams.de>
CC:     "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Leo Li <leoyang.li@....com>
Subject: RE: [PATCH v2 1/2] i2c: imx: fix dma_request_chan error handling

Hi Wolfram,

> -----Original Message-----
> From: Wolfram Sang [mailto:wsa@...-dreams.de]
> Sent: Wednesday, January 23, 2019 12:52 AM
> 
> On Wed, Jan 16, 2019 at 01:28:54PM +0200, Laurentiu Tudor wrote:
> > Use the correct error pointer when extracting the error code.
> >
> > Fixes: ea1e5f176e97 ("i2c: imx: notify about real errors on dma
> i2c_imx_dma_request")
> 
> This is not the sha1 in my tree. Maybe you rebased? I applied another
> patch meanwhile fixing the same issue. Still thanks!

I don't know, perhaps I was on some transient snapshot. Anyway, good that in the end it's fixed.

---
Best Regards, Laurentiu

> > Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com>
> > ---
> >  drivers/i2c/busses/i2c-imx.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
> > index 09b124547669..42fed40198a0 100644
> > --- a/drivers/i2c/busses/i2c-imx.c
> > +++ b/drivers/i2c/busses/i2c-imx.c
> > @@ -287,7 +287,7 @@ static int i2c_imx_dma_request(struct imx_i2c_struct
> *i2c_imx,
> >
> >  	dma->chan_tx = dma_request_chan(dev, "tx");
> >  	if (IS_ERR(dma->chan_tx)) {
> > -		ret = PTR_ERR(dma->chan_rx);
> > +		ret = PTR_ERR(dma->chan_tx);
> >  		if (ret != -ENODEV && ret != -EPROBE_DEFER)
> >  			dev_err(dev, "can't request DMA tx channel (%d)\n",
> ret);
> >  		goto fail_al;
> > --
> > 2.17.1
> >