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usb: musb: fix kernel panic during s2ram(v2)

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This patch fixes kernel panic during s2ram, which is caused
by the below:

	- musb is not put into drv data of musb platform device if
	CONFIG_USB_MUSB_HDRC_HCD is defined

	- glue layer driver always get musb instance via platform_get_drvdata.

The patch fixes the issue by always puting musb into drv data
of musb platform device, which is doable even the platform device
is a host controller device.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ming Lei 2010-12-21 21:16:11 +08:00 committed by Felipe Balbi
parent ebf53826e1
commit 456bb1697e
1 changed files with 1 additions and 7 deletions
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8
drivers/usb/musb/musb_core.c
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@ -128,12 +128,7 @@ MODULE_ALIAS("platform:" MUSB_DRIVER_NAME);
static inline struct musb *dev_to_musb(struct device *dev) static inline struct musb *dev_to_musb(struct device *dev)
{ {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
/* usbcore insists dev->driver_data is a "struct hcd *" */
return hcd_to_musb(dev_get_drvdata(dev));
#else
return dev_get_drvdata(dev); return dev_get_drvdata(dev);
#endif
} }
/*-------------------------------------------------------------------------*/ /*-------------------------------------------------------------------------*/
@ -1876,10 +1871,9 @@ allocate_instance(struct device *dev,
musb = kzalloc(sizeof *musb, GFP_KERNEL); musb = kzalloc(sizeof *musb, GFP_KERNEL);
if (!musb) if (!musb)
return NULL; return NULL;
dev_set_drvdata(dev, musb);
#endif #endif
dev_set_drvdata(dev, musb);
musb->mregs = mbase; musb->mregs = mbase;
musb->ctrl_base = mbase; musb->ctrl_base = mbase;
musb->nIrq = -ENODEV; musb->nIrq = -ENODEV;