| From 56d576361b399fa7936be32c5b4c4d0927c48351 Mon Sep 17 00:00:00 2001 |
| From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> |
| Date: Wed, 26 Apr 2017 20:50:07 +0900 |
| Subject: [PATCH 136/286] usb: gadget: udc: renesas_usb3: fix pm_runtime |
| functions calling |
| |
| This patch fixes an issue that this driver is possible to access |
| the registers before pm_runtime_get_sync() if a gadget driver is |
| installed first. After that, oops happens on R-Car Gen3 environment. |
| To avoid it, this patch changes the pm_runtime call timing from |
| probe/remove to udc_start/udc_stop. |
| |
| Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller") |
| Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> |
| Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> |
| (cherry picked from commit cdc876877ebc3f0677b267756d4564e2a429e730) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| drivers/usb/gadget/udc/renesas_usb3.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/drivers/usb/gadget/udc/renesas_usb3.c |
| +++ b/drivers/usb/gadget/udc/renesas_usb3.c |
| @@ -1841,6 +1841,9 @@ static int renesas_usb3_stop(struct usb_ |
| pm_runtime_put(usb3_to_dev(usb3)); |
| pm_runtime_disable(usb3_to_dev(usb3)); |
| |
| + pm_runtime_put(usb3_to_dev(usb3)); |
| + pm_runtime_disable(usb3_to_dev(usb3)); |
| + |
| return 0; |
| } |
| |
