Re: [PATCH] usb: musb: davinci: fix resources passed to MUSB driver for DM6467

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Nov 28, 2013 at 01:56:09PM +0400, Sergei Shtylyov wrote:
> Hello.
> 
> On 27-11-2013 23:35, Felipe Balbi wrote:
> 
> >From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> 
> >commit upstream ea78201e2e08f8a91e30100c4c4a908b5cf295fc
> 
> >After commit 09fc7d22b024692b2fe8a943b246de1af307132b (usb: musb: fix incorrect
> >usage of  resource pointer), CPPI DMA driver on DaVinci DM6467 can't detect its
> >dedicated IRQ and so the MUSB IRQ  is erroneously used instead. This is because
> >only 2 resources are passed to the MUSB driver from the DaVinci glue layer,  so
> >fix  this by always copying 3 resources (it's  safe since a placeholder for the
> >3rd resource is always  there) and passing 'pdev->num_resources' instead of the
> >size of musb_resources[] to platform_device_add_resources().
> 
> >Cc: <stable@xxxxxxxxxxxxxxx> # 3.11+
> >Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> >Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> >---
> 
> >backported from v3.13.
> 
>    Note that this doesn't match to what I was sending for 3.12. I
> don't think you've correctly ported my patch to 3.13-rc1.
> 
> >  drivers/usb/musb/davinci.c | 11 ++++++++++-
> >  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> >diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
> >index ed0834e..ab69245 100644
> >--- a/drivers/usb/musb/davinci.c
> >+++ b/drivers/usb/musb/davinci.c
> [...]
> >@@ -567,6 +567,15 @@ static int davinci_probe(struct platform_device *pdev)
> >  	musb_resources[1].end = pdev->resource[1].end;
> >  	musb_resources[1].flags = pdev->resource[1].flags;
> >
> >+	/*
> >+	 * For DM6467 3 resources are passed. A placeholder for the 3rd
> >+	 * resource is always there, so it's safe to always copy it...
> >+	 */
> >+	musb_resources[2].name = pdev->resource[2].name;
> >+	musb_resources[2].start = pdev->resource[2].start;
> >+	musb_resources[2].end = pdev->resource[2].end;
> >+	musb_resources[2].flags = pdev->resource[2].flags;
> >+
> >  	ret = platform_device_add_resources(musb, musb_resources,
> >  			ARRAY_SIZE(musb_resources));
> 
>    I had this line changed to 'pdev->num_resources'.

hmmm, I missed that part indeed. Will fix it and re-send.

-- 
balbi

Attachment: signature.asc
Description: Digital signature


[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]