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authorOliver Neukum <oliver@neukum.org>2009-11-27 15:17:59 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2009-11-30 16:43:16 -0800
commitee4ecb8ac63a5792bec448037d4b82ec4144f94b (patch)
treeb272d4c5bcfe8ef8e7c94b6182fa2b3ed024b745 /drivers/usb/host/ehci.h
parent8d6499e5bde91ad05dea4f666bdfe79e65e7cf96 (diff)
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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>
Diffstat (limited to 'drivers/usb/host/ehci.h')
-rw-r--r--drivers/usb/host/ehci.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 064e76821ff..2d85e21ff28 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -118,6 +118,7 @@ struct ehci_hcd { /* one per controller */
unsigned stamp;
unsigned random_frame;
unsigned long next_statechange;
+ ktime_t last_periodic_enable;
u32 command;
/* SILICON QUIRKS */
@@ -127,6 +128,7 @@ struct ehci_hcd { /* one per controller */
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)