The patch below does not apply to the 3.12-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From ea78201e2e08f8a91e30100c4c4a908b5cf295fc Mon Sep 17 00:00:00 2001
From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Date: Sun, 22 Sep 2013 01:43:58 +0400
Subject: [PATCH] usb: musb: davinci: fix resources passed to MUSB driver for
DM6467
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>
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index 45aae0bb..1121fd74 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -513,7 +513,7 @@ static const struct platform_device_info davinci_dev_info = {
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;
@@ -561,6 +561,15 @@ 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;
+
pinfo = davinci_dev_info;
pinfo.parent = &pdev->dev;
pinfo.res = musb_resources;
--
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