usb: musb: davinci: fix resources passed to MUSB driver for DM6467

commit ea78201e2e08f8a91e30100c4c4a908b5cf295fc upstream.

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().

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index ed0834e2b72eeaa6c9dbe73bdb77c2f433282b42..ab69245f86dcb395a7d9ce3751232bd6c96ae4b3 100644 (file)
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -509,7 +509,7 @@ static u64 davinci_dmamask = DMA_BIT_MASK(32);
 
 static int davinci_probe(struct platform_device *pdev)
 {
-       struct resource musb_resources[2];
+       struct resource                 musb_resources[3];
        struct musb_hdrc_platform_data  *pdata = dev_get_platdata(&pdev->dev);
        struct platform_device          *musb;
        struct davinci_glue             *glue;
@@ -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));
        if (ret) {