The patch titled
revert gregkh-usb-usbcore-remove-usb_suspend_root_hub
has been added to the -mm tree. Its filename is
revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: revert gregkh-usb-usbcore-remove-usb_suspend_root_hub
From: Andrew Morton <akpm@xxxxxxxx>
Unbreak Rafael's machine.
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/usb/core/hcd.c | 44 ++++++++++++++++++++++++++++++++++
drivers/usb/core/hcd.h | 6 ++++
drivers/usb/core/hub.c | 18 +++++++++++++
drivers/usb/core/usb.h | 1
drivers/usb/host/ohci-hub.c | 3 ++
5 files changed, 71 insertions(+), 1 deletion(-)
diff -puN drivers/usb/core/hcd.c~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub drivers/usb/core/hcd.c
--- a/drivers/usb/core/hcd.c~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub
+++ a/drivers/usb/core/hcd.c
@@ -1431,6 +1431,50 @@ int hcd_bus_resume (struct usb_bus *bus)
return status;
}
+/*
+ * usb_hcd_suspend_root_hub - HCD autosuspends downstream ports
+ * @hcd: host controller for this root hub
+ *
+ * This call arranges that usb_hcd_resume_root_hub() is safe to call later;
+ * that the HCD's root hub polling is deactivated; and that the root's hub
+ * driver is suspended. HCDs may call this to autosuspend when their root
+ * hub's downstream ports are all inactive: unpowered, disconnected,
+ * disabled, or suspended.
+ *
+ * The HCD will autoresume on device connect change detection (using SRP
+ * or a D+/D- pullup). The HCD also autoresumes on remote wakeup signaling
+ * from any ports that are suspended (if that is enabled). In most cases,
+ * overcurrent signaling (on powered ports) will also start autoresume.
+ *
+ * Always called with IRQs blocked.
+ */
+void usb_hcd_suspend_root_hub (struct usb_hcd *hcd)
+{
+ struct urb *urb;
+
+ spin_lock (&hcd_root_hub_lock);
+ usb_suspend_root_hub (hcd->self.root_hub);
+
+ /* force status urb to complete/unlink while suspended */
+ if (hcd->status_urb) {
+ urb = hcd->status_urb;
+ urb->status = -ECONNRESET;
+ urb->hcpriv = NULL;
+ urb->actual_length = 0;
+
+ del_timer (&hcd->rh_timer);
+ hcd->poll_pending = 0;
+ hcd->status_urb = NULL;
+ } else
+ urb = NULL;
+ spin_unlock (&hcd_root_hub_lock);
+ hcd->state = HC_STATE_SUSPENDED;
+
+ if (urb)
+ usb_hcd_giveback_urb (hcd, urb, NULL);
+}
+EXPORT_SYMBOL_GPL(usb_hcd_suspend_root_hub);
+
/**
* usb_hcd_resume_root_hub - called by HCD to resume its root hub
* @hcd: host controller for this root hub
diff -puN drivers/usb/core/hcd.h~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub drivers/usb/core/hcd.h
--- a/drivers/usb/core/hcd.h~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub
+++ a/drivers/usb/core/hcd.h
@@ -368,11 +368,17 @@ extern int usb_find_interface_driver (st
#define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN))
#ifdef CONFIG_PM
+extern void usb_hcd_suspend_root_hub (struct usb_hcd *hcd);
extern void usb_hcd_resume_root_hub (struct usb_hcd *hcd);
extern void usb_root_hub_lost_power (struct usb_device *rhdev);
extern int hcd_bus_suspend (struct usb_bus *bus);
extern int hcd_bus_resume (struct usb_bus *bus);
#else
+static inline void usb_hcd_suspend_root_hub(struct usb_hcd *hcd)
+{
+ return;
+}
+
static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
{
return;
diff -puN drivers/usb/core/hub.c~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub drivers/usb/core/hub.c
--- a/drivers/usb/core/hub.c~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub
+++ a/drivers/usb/core/hub.c
@@ -462,14 +462,18 @@ static void hub_power_on(struct usb_hub
msleep(max(pgood_delay, (unsigned) 100));
}
-static void hub_quiesce(struct usb_hub *hub)
+static inline void __hub_quiesce(struct usb_hub *hub)
{
/* (nonblocking) khubd and related activity won't re-trigger */
hub->quiescing = 1;
hub->activating = 0;
hub->resume_root_hub = 0;
+}
+static void hub_quiesce(struct usb_hub *hub)
+{
/* (blocking) stop khubd and related activity */
+ __hub_quiesce(hub);
usb_kill_urb(hub->urb);
if (hub->has_indicators)
cancel_delayed_work(&hub->leds);
@@ -1945,6 +1949,18 @@ static inline int remote_wakeup(struct u
#define hub_resume NULL
#endif
+void usb_suspend_root_hub(struct usb_device *hdev)
+{
+ struct usb_hub *hub = hdev_to_hub(hdev);
+
+ /* This also makes any led blinker stop retriggering. We're called
+ * from irq, so the blinker might still be scheduled. Caller promises
+ * that the root hub status URB will be canceled.
+ */
+ __hub_quiesce(hub);
+ mark_quiesced(to_usb_interface(hub->intfdev));
+}
+
void usb_resume_root_hub(struct usb_device *hdev)
{
struct usb_hub *hub = hdev_to_hub(hdev);
diff -puN drivers/usb/core/usb.h~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub drivers/usb/core/usb.h
--- a/drivers/usb/core/usb.h~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub
+++ a/drivers/usb/core/usb.h
@@ -20,6 +20,7 @@ extern char *usb_cache_string(struct usb
extern int usb_set_configuration(struct usb_device *dev, int configuration);
extern void usb_kick_khubd(struct usb_device *dev);
+extern void usb_suspend_root_hub(struct usb_device *hdev);
extern void usb_resume_root_hub(struct usb_device *dev);
extern int usb_hub_init(void);
diff -puN drivers/usb/host/ohci-hub.c~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub drivers/usb/host/ohci-hub.c
--- a/drivers/usb/host/ohci-hub.c~revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub
+++ a/drivers/usb/host/ohci-hub.c
@@ -135,6 +135,9 @@ static int ohci_bus_suspend (struct usb_
hcd->poll_rh = 0;
done:
+ /* external suspend vs self autosuspend ... same effect */
+ if (status == 0)
+ usb_hcd_suspend_root_hub(hcd);
spin_unlock_irqrestore (&ohci->lock, flags);
return status;
}
_
Patches currently in -mm which might be from akpm@xxxxxxxx are
origin.patch
knfsd-have-ext2-reject-file-handles-with-bad-inode-numbers-early.patch
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git-net.patch
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git-nfs-fixup.patch
revert-allow-file-systems-to-manually-d_move-inside-of-rename.patch
git-ocfs2.patch
git-pcmcia-fixup.patch
git-powerpc.patch
tickle-nmi-watchdog-on-serial-output-fix.patch
serial-fix-uart_bug_txen-test.patch
pcie-check-and-return-bus_register-errors-fix.patch
git-scsi-misc.patch
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revert-scsi-improve-inquiry-printing.patch
git-scsi-misc-nlmsg_multicast-fix.patch
git-block-vs-git-sas.patch
git-scsi-target-fixup.patch
git-scsi-target-vs-git-block.patch
revert-gregkh-usb-usbcore-remove-usb_suspend_root_hub.patch
gregkh-usb-usb-storage-add-rio-karma-eject-support-fix.patch
fix-gregkh-usb-usbcore-add-autosuspend-autoresume-infrastructure.patch
git-watchdog.patch
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reduce-max_nr_zones-use-enum-to-define-zones-reformat-and-comment-cleanup.patch
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