The standard suspend sequence involves runtime_resuming devices before suspending the system. So just saving context in runtime_suspend and restoring it in runtime resume isn't enough. We must also save in "suspend" and restore in "resume". Without this patch, and OMAP3 system with off_mode enabled will find the musb port non-functional after suspend/resume. With the patch it works perfectly. Signed-off-by: NeilBrown <neilb@xxxxxxx> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index fd34867..b6ccc02 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2225,6 +2225,7 @@ static int musb_suspend(struct device *dev) } spin_unlock_irqrestore(&musb->lock, flags); + musb_save_context(musb); return 0; } @@ -2234,6 +2235,8 @@ static int musb_resume_noirq(struct device *dev) * unless for some reason the whole soc powered down or the USB * module got reset through the PSC (vs just being disabled). */ + struct musb *musb = dev_to_musb(dev); + musb_restore_context(musb); return 0; }
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