From e7ecf069d4730d5ec4cc91a531eb85c9604142bd Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Wed, 28 Aug 2013 09:31:04 -0700 Subject: [PATCH] xhci: Fix warning introduced by disabling runtime PM. The 0day build server caught a new build warning that is triggered when CONFIG_USB_DEFAULT_PERSIST is turned on: tree: git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci.git for-usb-next head: 0730d52a86919300a39a2be37f6c140997dfb82f commit: c8476fb855434c733099079063990e5bfa7ecad6 [1/3] usb: xhci: Disable runtime PM suspend for quirky controllers config: i386-randconfig-r6-0826 (attached as .config) All warnings: drivers/usb/host/xhci.c: In function 'xhci_free_dev': >> drivers/usb/host/xhci.c:3560:17: warning: unused variable 'dev' [-Wunused-variable] struct device *dev = hcd->self.controller; ^ drivers/usb/host/xhci.c: In function 'xhci_alloc_dev': >> drivers/usb/host/xhci.c:3648:17: warning: unused variable 'dev' [-Wunused-variable] struct device *dev = hcd->self.controller; ^ vim +/dev +3560 drivers/usb/host/xhci.c 3554 * disabled. Free any HC data structures associated with that device. 3555 */ 3556 void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) 3557 { 3558 struct xhci_hcd *xhci = hcd_to_xhci(hcd); 3559 struct xhci_virt_device *virt_dev; > 3560 struct device *dev = hcd->self.controller; 3561 unsigned long flags; 3562 u32 state; 3563 int i, ret; 3564 3565 #ifndef CONFIG_USB_DEFAULT_PERSIST 3566 /* 3567 * We called pm_runtime_get_noresume when the device was attached. 3568 * Decrement the counter here to allow controller to runtime suspend 3569 * if no devices remain. 3570 */ 3571 if (xhci->quirks & XHCI_RESET_ON_RESUME) 3572 pm_runtime_put_noidle(dev); 3573 #endif 3574 ... 3641 /* 3642 * Returns 0 if the xHC ran out of device slots, the Enable Slot command 3643 * timed out, or allocating memory failed. Returns 1 on success. 3644 */ 3645 int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) 3646 { 3647 struct xhci_hcd *xhci = hcd_to_xhci(hcd); > 3648 struct device *dev = hcd->self.controller; 3649 unsigned long flags; 3650 int timeleft; 3651 int ret; Fix this. Signed-off-by: Sarah Sharp Cc: Shawn Nematbakhsh --- drivers/usb/host/xhci.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 349d3460a17a..49b6edb84a79 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3557,7 +3557,6 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_virt_device *virt_dev; - struct device *dev = hcd->self.controller; unsigned long flags; u32 state; int i, ret; @@ -3569,7 +3568,7 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) * if no devices remain. */ if (xhci->quirks & XHCI_RESET_ON_RESUME) - pm_runtime_put_noidle(dev); + pm_runtime_put_noidle(hcd->self.controller); #endif ret = xhci_check_args(hcd, udev, NULL, 0, true, __func__); @@ -3645,7 +3644,6 @@ static int xhci_reserve_host_control_ep_resources(struct xhci_hcd *xhci) int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); - struct device *dev = hcd->self.controller; unsigned long flags; int timeleft; int ret; @@ -3705,7 +3703,7 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) * suspend if there is a device attached. */ if (xhci->quirks & XHCI_RESET_ON_RESUME) - pm_runtime_get_noresume(dev); + pm_runtime_get_noresume(hcd->self.controller); #endif /* Is this a LS or FS device under a HS hub? */ -- 2.39.5