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SubjectRe: v3.11-rc1 USB regressions
On Tue, Jul 16, 2013 at 11:08:36AM +0300, Felipe Balbi wrote:
> Hi,
>
> On Tue, Jul 16, 2013 at 12:30:00PM +0530, Kishon Vijay Abraham I wrote:
> > On Tuesday 16 July 2013 12:03 PM, Daniel Mack wrote:
> > > Hi Aaro,
> > >
> > > On 16.07.2013 00:56, Aaro Koskinen wrote:
> > >> Hi,
> > >>
> > >> I think USB tree introduced regressions in v3.11-rc1, at least for some
> > >> OMAP devices using legacy boot.
> > >
> > > Thanks for checking the tree so early.
> > >
> > >> I have only bisected these; I have no
> > >> idea what the real fixes are but the following reverts make Nokia OMAP2+
> > >> boards again usable for kernel development work (they need working USB
> > >> connection for interacting with the device):
> > >>
> > >> 1) USB peripheral mode (g_ether) is broken on Nokia N900, N950 and N9
> > >> (USB_MUSB_OMAP2PLUS). To make it it work, I need to revert three
> > >> commits:
> > >>
> > >> 09fc7d22b024692b2fe8a943b246de1af307132b
> > >> usb: musb: fix incorrect usage of resource pointer
> > >> (Reverting this fixes the g_ether probe failure "couldn't find
> > >> an available UDC")
> >
> > I've posted a patch fixing the issue
> > http://comments.gmane.org/gmane.linux.usb.general/89541
> > There were some comments on it. I'll be posting a new version for it.
>
> hmm, n8x0 used tusb6010, so perhaps a similar patch needs to be cooked
> for that too. Right now, let's to the minimum fix, which is just to
> increment the array size to 3 and for v3.12 we do the changes that I
> suggested.

this should solve the problem on n900 and n8x0, it's pretty much
kishon's original patch, so I guess it deserves his authorship:

diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 6708a3b..f44e8b5 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -481,7 +481,7 @@ static u64 omap2430_dmamask = DMA_BIT_MASK(32);

static int omap2430_probe(struct platform_device *pdev)
{
- struct resource musb_resources[2];
+ struct resource musb_resources[3];
struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
struct omap_musb_board_data *data;
struct platform_device *musb;
@@ -581,6 +581,11 @@ static int omap2430_probe(struct platform_device *pdev)
musb_resources[1].end = pdev->resource[1].end;
musb_resources[1].flags = pdev->resource[1].flags;

+ 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));
if (ret) {
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 2c06a89..6f8a9ca 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -1156,7 +1156,7 @@ static u64 tusb_dmamask = DMA_BIT_MASK(32);

static int tusb_probe(struct platform_device *pdev)
{
- struct resource musb_resources[2];
+ struct resource musb_resources[3];
struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
struct platform_device *musb;
struct tusb6010_glue *glue;
@@ -1199,6 +1199,11 @@ static int tusb_probe(struct platform_device *pdev)
musb_resources[1].end = pdev->resource[1].end;
musb_resources[1].flags = pdev->resource[1].flags;

+ 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));
if (ret) {
--
balbi
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