summaryrefslogtreecommitdiff
path: root/drivers/usb/host/ehci.h
diff options
context:
space:
mode:
authorAlan Stern <stern@rowland.harvard.edu>2016-01-25 15:42:04 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-03 13:14:52 -0800
commitfcc5184ec1521c7d85124421e593660c94e9a9fb (patch)
tree5bb751d65d74638fe8f7e99d2740c09d23824736 /drivers/usb/host/ehci.h
parent4f97f8f5f0664bdcfffe74e7d2a841f55a0e88e2 (diff)
USB: EHCI: store reason for unlinking a QH
This patch replaces the "exception" bitflag in the ehci_qh structure with a more explicit "unlink_reason" bitmask. This is for use in the following patch, where we will need to have a good idea of the reason for unlinking a QH, not just "something exceptional happened". Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Michael Reutman <mreutman@epiqsolutions.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci.h')
-rw-r--r--drivers/usb/host/ehci.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index ec61aedb0067..f11b9dc53981 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -432,13 +432,19 @@ struct ehci_qh {
u8 xacterrs; /* XactErr retry counter */
#define QH_XACTERR_MAX 32 /* XactErr retry limit */
+ u8 unlink_reason;
+#define QH_UNLINK_HALTED 0x01 /* Halt flag is set */
+#define QH_UNLINK_SHORT_READ 0x02 /* Recover from a short read */
+#define QH_UNLINK_DUMMY_OVERLAY 0x04 /* QH overlayed the dummy TD */
+#define QH_UNLINK_SHUTDOWN 0x08 /* The HC isn't running */
+#define QH_UNLINK_QUEUE_EMPTY 0x10 /* Reached end of the queue */
+#define QH_UNLINK_REQUESTED 0x20 /* Disable, reset, or dequeue */
+
u8 gap_uf; /* uframes split/csplit gap */
unsigned is_out:1; /* bulk or intr OUT */
unsigned clearing_tt:1; /* Clear-TT-Buf in progress */
unsigned dequeue_during_giveback:1;
- unsigned exception:1; /* got a fault, or an unlink
- was requested */
unsigned should_be_inactive:1;
};