USB: work around for EHCI with quirky periodic schedules
a quirky chipset needs periodic schedules to run for a minimum
time before they can be disabled again. This enforces the requirement
with a time stamp and a calculated delay
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 064e768..2d85e21 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -118,6 +118,7 @@
unsigned stamp;
unsigned random_frame;
unsigned long next_statechange;
+ ktime_t last_periodic_enable;
u32 command;
/* SILICON QUIRKS */
@@ -127,6 +128,7 @@
unsigned big_endian_desc:1;
unsigned has_amcc_usb23:1;
unsigned need_io_watchdog:1;
+ unsigned broken_periodic:1;
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)