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xhci: Step 2 to fix usb-linus and usb-next. 

Hi Greg,
 
 This is the first of two steps to fix your usb-linus and usb-next trees.
 As I mentioned, commit 4fae6f0fa8 "USB:
 handle LPM errors during device suspend correctly" was incorrectly added
 to usb-next when it should have been added to usb-linus and marked for
 stable.
 
 Two port power off bug fixes touch the same code that patch touches, but
 it's not easy to simply move commit 4fae6f0f patch to usb-linus because
 commit 28e861658e "USB: refactor code for
 enabling/disabling remote wakeup" also touched those code sections.
 
 I propose a two step process to fix this:
 
 1. Pull these four patches into usb-linus.
 
 2. Revert commit 28e861658e from usb-next.
    Merge usb-linus into usb-next, and resolve the conflicts.
 
 I will be sending pull requests for these steps.
 
 This pull request is step two.
 
 Sarah Sharp
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Merge tag 'for-usb-2013-08-15-step-2' of ra.kernel.org:/pub/scm/linux/kernel/git/sarah/xhci into work-next

Sarah writes:

xhci: Step 2 to fix usb-linus and usb-next.

Hi Greg,

This is the first of two steps to fix your usb-linus and usb-next trees.
As I mentioned, commit 4fae6f0fa8 "USB:
handle LPM errors during device suspend correctly" was incorrectly added
to usb-next when it should have been added to usb-linus and marked for
stable.

Two port power off bug fixes touch the same code that patch touches, but
it's not easy to simply move commit 4fae6f0f patch to usb-linus because
commit 28e861658e "USB: refactor code for
enabling/disabling remote wakeup" also touched those code sections.

I propose a two step process to fix this:

1. Pull these four patches into usb-linus.

2. Revert commit 28e861658e from usb-next.
   Merge usb-linus into usb-next, and resolve the conflicts.

I will be sending pull requests for these steps.

This pull request is step two.

Sarah Sharp
This commit is contained in:
Greg Kroah-Hartman 2013-08-19 16:57:51 -07:00
parent bd479f2933 5845c13a70
commit 4c4e15966d
5 changed files with 15 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/usb/core/hub.c
View File

@ -3054,19 +3054,9 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
usb_set_device_state(udev, USB_STATE_SUSPENDED);
}
/*
* Check whether current status meets the requirement of
* usb port power off mechanism
*/
if (status == 0 && !udev->do_remote_wakeup && udev->persist_enabled) {
enum pm_qos_flags_status pm_qos_stat;
pm_qos_stat = dev_pm_qos_flags(&port_dev->dev,
PM_QOS_FLAG_NO_POWER_OFF);
if (pm_qos_stat != PM_QOS_FLAGS_ALL) {
pm_runtime_put_sync(&port_dev->dev);
port_dev->did_runtime_put = true;
}
pm_runtime_put_sync(&port_dev->dev);
port_dev->did_runtime_put = true;
}
usb_mark_last_busy(hub->hdev);

13
drivers/usb/core/port.c
View File

@ -89,22 +89,19 @@ static int usb_port_runtime_resume(struct device *dev)
retval = usb_hub_set_port_power(hdev, hub, port1, true);
if (port_dev->child && !retval) {
/*
* Wait for usb hub port to be reconnected in order to make
* the resume procedure successful.
* Attempt to wait for usb hub port to be reconnected in order
* to make the resume procedure successful. The device may have
* disconnected while the port was powered off, so ignore the
* return status.
*/
retval = hub_port_debounce_be_connected(hub, port1);
if (retval < 0) {
if (retval < 0)
dev_dbg(&port_dev->dev, "can't get reconnection after setting port power on, status %d\n",
retval);
goto out;
}
usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE);
/* Set return value to 0 if debounce successful */
retval = 0;
}
out:
clear_bit(port1, hub->busy_bits);
usb_autopm_put_interface(intf);
return retval;

2
drivers/usb/host/xhci-plat.c
View File

@ -26,7 +26,7 @@ static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
* here that the generic code does not try to make a pci_dev from our
* dev struct in order to setup MSI
*/
xhci->quirks |= XHCI_BROKEN_MSI;
xhci->quirks |= XHCI_PLAT;
}
/* called during probe() after chip reset completes */

7
drivers/usb/host/xhci.c
View File

@ -348,9 +348,14 @@ static void __maybe_unused xhci_msix_sync_irqs(struct xhci_hcd *xhci)
static int xhci_try_enable_msi(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
struct pci_dev *pdev;
int ret;
/* The xhci platform device has set up IRQs through usb_add_hcd. */
if (xhci->quirks & XHCI_PLAT)
return 0;
pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
/*
* Some Fresco Logic host controllers advertise MSI, but fail to
* generate interrupts. Don't even try to enable MSI.

1
drivers/usb/host/xhci.h
View File

@ -1537,6 +1537,7 @@ struct xhci_hcd {
#define XHCI_SPURIOUS_REBOOT (1 << 13)
#define XHCI_COMP_MODE_QUIRK (1 << 14)
#define XHCI_AVOID_BEI (1 << 15)
#define XHCI_PLAT (1 << 16)
unsigned int num_active_eps;
unsigned int limit_active_eps;
/* There are two roothubs to keep track of bus suspend info for */