Alan Stern 69fff59de4 USB: remove remaining usages of hcd->state from usbcore and fix regression ... This patch (as1467) removes the last usages of hcd->state from usbcore. We no longer check to see if an interrupt handler finds that a controller has died; instead we rely on host controller drivers to make an explicit call to usb_hc_died(). This fixes a regression introduced by commit 9b37596a2e (USB: move usbcore away from hcd->state). It used to be that when a controller shared an IRQ with another device and an interrupt arrived while hcd->state was set to HC_STATE_HALT, the interrupt handler would be skipped. The commit removed that test; as a result the current code doesn't skip calling the handler and ends up believing the controller has died, even though it's only temporarily stopped. The solution is to ignore HC_STATE_HALT following the handler's return. As a consequence of this change, several of the host controller drivers need to be modified. They can no longer implicitly rely on usbcore realizing that a controller has died because of hcd->state. The patch adds calls to usb_hc_died() in the appropriate places. The patch also changes a few of the interrupt handlers. They don't expect to be called when hcd->state is equal to HC_STATE_HALT, even if the controller is still alive. Early returns were added to avoid any confusion. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Manuel Lauss <manuel.lauss@googlemail.com> CC: Rodolfo Giometti <giometti@linux.it> CC: Olav Kongas <ok@artecdesign.ee> CC: <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2011-05-19 16:34:04 -07:00
..
buffer.c
config.c	usb/ch9: use proper endianess for wBytesPerInterval	2011-05-02 16:42:51 -07:00
devices.c	Merge 2.6.39-rc4 into usb-next	2011-04-19 05:50:38 -07:00
devio.c	USB: Do not pass negative length to snoop_urb()	2011-03-23 13:14:16 -07:00
driver.c	USB: Move runtime PM callbacks to usb_device_pm_ops	2011-03-18 19:55:36 +01:00
endpoint.c
file.c	USB: remove dead code from usb_deregister_dev()	2011-04-13 16:24:05 -07:00
generic.c
hcd-pci.c	Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6	2011-03-16 15:04:26 -07:00
hcd.c	USB: remove remaining usages of hcd->state from usbcore and fix regression	2011-05-19 16:34:04 -07:00
hub.c	usbcore: warm reset USB3 port in SS.Inactive state	2011-05-02 16:42:54 -07:00
inode.c
Kconfig
Makefile
message.c	usb: Change usb_hcd->bandwidth_mutex to a pointer.	2011-03-13 18:07:14 -07:00
notify.c
otg_whitelist.h
quirks.c
sysfs.c	usb: core: Change usb_create_sysfs_intf_files()' return type to void	2011-04-29 17:24:38 -07:00
urb.c	USB: Add support for SuperSpeed isoc endpoints	2011-03-13 18:23:57 -07:00
usb.c	usb: core: Change usb_create_sysfs_intf_files()' return type to void	2011-04-29 17:24:38 -07:00
usb.h	usb: core: Change usb_create_sysfs_intf_files()' return type to void	2011-04-29 17:24:38 -07:00