kernel_samsung_sm7125

jenna

History

Stefan Becker de85422b94 USB: fix interrupt disabling for HCDs with shared interrupt handlers USB: fix interrupt disabling for HCDs with shared interrupt handlers As has been discussed several times on LKML, IRQF_SHARED \| IRQF_DISABLED doesn't work reliably, i.e. a shared interrupt handler CAN'T be certain to be called with interrupts disabled. Most USB HCD handlers use IRQF_DISABLED and therefore havoc can break out if they share their interrupt with a handler that doesn't use it. On my test machine the yenta_socket interrupt handler (no IRQF_DISABLED) was registered before ehci_hcd and one uhci_hcd instance. Therefore all usb_hcd_irq() invocations for ehci_hcd and for one uhci_hcd instance happened with interrupts enabled. That led to random lockups as USB core HCD functions that acquire the same spinlock could be called twice from interrupt handlers. This patch updates usb_hcd_irq() to always disable/restore interrupts. usb_add_hcd() will silently remove any IRQF_DISABLED requested from HCD code. Signed-off-by: Stefan Becker <stefan.becker@nokia.com> Cc: stable <stable@kernel.org> Acked-by: David Brownell <david-b@pacbell.net> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		17 years ago
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Kconfig	USB: Remove EXPERIMENTAL from dynamic USB minor allocation.	17 years ago
Makefile	…
buffer.c	…
config.c	USB: ehci tolerates some buggy devices	17 years ago
devices.c	…
devio.c	USB: replace remaining __FUNCTION__ occurrences	17 years ago
driver.c	USB: replace remaining __FUNCTION__ occurrences	17 years ago
endpoint.c	USB: create attributes before sending uevent	17 years ago
file.c	…
generic.c	USB: fix possible deadlock involving sysfs attributes	17 years ago
hcd-pci.c	USB: clarify usage of hcd->suspend/resume methods	17 years ago
hcd.c	USB: fix interrupt disabling for HCDs with shared interrupt handlers	17 years ago
hcd.h	USB: EHCI: suppress unwanted error messages	17 years ago
hub.c	USB: don't use reset-resume if drivers don't support it	17 years ago
hub.h	wusb: make ep0_reinit available for modules	17 years ago
inode.c	proc: remove proc_bus	17 years ago
message.c	USB: create attributes before sending uevent	17 years ago
notify.c	…
otg_whitelist.h	…
quirks.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	17 years ago
sysfs.c	USB: add all configs to the "descriptors" attribute	17 years ago
urb.c	USB: replace remaining __FUNCTION__ occurrences	17 years ago
usb.c	USB: create attributes before sending uevent	17 years ago
usb.h	USB: create attributes before sending uevent	17 years ago