diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2012-05-14 17:48:16 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-14 19:50:22 (GMT) |
| commit | 1996e6c572969a8cf6d7fa97eef621219acd94a9 (patch) | |
| tree | 4a6bcdd32202438d6f8a4671a936319c0292dbf3 /drivers/usb/host/ehci.h | |
| parent | 65b8e5cbdddc86474372bdb48dc233b06710a576 (diff) | |
| download | linux-fsl-qoriq-1996e6c572969a8cf6d7fa97eef621219acd94a9.tar.xz | |
USB: EHCI: work around bug in the Philips ISP1562 controller
This patch (as1556) works around a bug in the Philips ISP1562 EHCI
controller. Although the controller claims to support frame-list
lengths smaller than the default of 1024 for its periodic schedule, in
fact smaller values don't work. A new quirk flag is added to indicate
when the bug is present, and if it is then the schedule size is left
at the default value.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci.h')
| -rw-r--r-- | drivers/usb/host/ehci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 2694ed6..2a6652f 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -149,6 +149,7 @@ struct ehci_hcd { /* one per controller */ unsigned use_dummy_qh:1; /* AMD Frame List table quirk*/ unsigned has_synopsys_hc_bug:1; /* Synopsys HC */ unsigned frame_index_bug:1; /* MosChip (AKA NetMos) */ + unsigned sched_size_bug:1; /* Philips */ /* required for usb32 quirk */ #define OHCI_CTRL_HCFS (3 << 6) |