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xhci: Bug fixes for 3.12. 

Hi Greg,
 
 Here's three low-priority bug fixes that should be queued for 3.12.
 They disable runtime PM for hosts that need the XHCI_RESET_ON_RESUME
 quirk, fix USB 2.0 Link PM on hosts that don't have BESL support, and
 prevent a bunch of log spam.
 
 Please pull into usb-next for 3.12.
 
 Sarah Sharp
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Merge tag 'for-usb-next-2013-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-next

Sarah writes:

xhci: Bug fixes for 3.12.

Hi Greg,

Here's three low-priority bug fixes that should be queued for 3.12.
They disable runtime PM for hosts that need the XHCI_RESET_ON_RESUME
quirk, fix USB 2.0 Link PM on hosts that don't have BESL support, and
prevent a bunch of log spam.

Please pull into usb-next for 3.12.

Sarah Sharp
This commit is contained in:
Greg Kroah-Hartman 2013-08-27 13:02:57 -07:00
parent ce26bd23d4 0730d52a86
commit 62f4b242ca
3 changed files with 31 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/host/xhci-ext-caps.h
View File

@ -71,7 +71,7 @@
/* USB 2.0 xHCI 1.0 hardware LMP capability - section 7.2.2.1.3.2 */
#define XHCI_HLC (1 << 19)
#define XHCI_BLC (1 << 19)
#define XHCI_BLC (1 << 20)
/* command register values to disable interrupts and halt the HC */
/* start/stop HC execution - do not write unless HC is halted*/

24
drivers/usb/host/xhci-ring.c
View File

@ -3087,14 +3087,10 @@ int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
* to set the polling interval (once the API is added).
*/
if (xhci_interval != ep_interval) {
if (printk_ratelimit())
dev_dbg(&urb->dev->dev, "Driver uses different interval"
" (%d microframe%s) than xHCI "
"(%d microframe%s)\n",
ep_interval,
ep_interval == 1 ? "" : "s",
xhci_interval,
xhci_interval == 1 ? "" : "s");
dev_dbg_ratelimited(&urb->dev->dev,
"Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n",
ep_interval, ep_interval == 1 ? "" : "s",
xhci_interval, xhci_interval == 1 ? "" : "s");
urb->interval = xhci_interval;
/* Convert back to frames for LS/FS devices */
if (urb->dev->speed == USB_SPEED_LOW ||
@ -3876,14 +3872,10 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
* to set the polling interval (once the API is added).
*/
if (xhci_interval != ep_interval) {
if (printk_ratelimit())
dev_dbg(&urb->dev->dev, "Driver uses different interval"
" (%d microframe%s) than xHCI "
"(%d microframe%s)\n",
ep_interval,
ep_interval == 1 ? "" : "s",
xhci_interval,
xhci_interval == 1 ? "" : "s");
dev_dbg_ratelimited(&urb->dev->dev,
"Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n",
ep_interval, ep_interval == 1 ? "" : "s",
xhci_interval, xhci_interval == 1 ? "" : "s");
urb->interval = xhci_interval;
/* Convert back to frames for LS/FS devices */
if (urb->dev->speed == USB_SPEED_LOW ||

22
drivers/usb/host/xhci.c
View File

@ -3557,10 +3557,21 @@ 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;
#ifndef CONFIG_USB_DEFAULT_PERSIST
/*
* We called pm_runtime_get_noresume when the device was attached.
* Decrement the counter here to allow controller to runtime suspend
* if no devices remain.
*/
if (xhci->quirks & XHCI_RESET_ON_RESUME)
pm_runtime_put_noidle(dev);
#endif
ret = xhci_check_args(hcd, udev, NULL, 0, true, __func__);
/* If the host is halted due to driver unload, we still need to free the
* device.
@ -3634,6 +3645,7 @@ 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;
@ -3686,6 +3698,16 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev)
goto disable_slot;
}
udev->slot_id = xhci->slot_id;
#ifndef CONFIG_USB_DEFAULT_PERSIST
/*
* If resetting upon resume, we can't put the controller into runtime
* suspend if there is a device attached.
*/
if (xhci->quirks & XHCI_RESET_ON_RESUME)
pm_runtime_get_noresume(dev);
#endif
/* Is this a LS or FS device under a HS hub? */
/* Hub or peripherial? */
return 1;