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| author | Alan Stern <stern@rowland.harvard.edu> | 2006-07-31 16:16:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-08-03 01:41:42 +0200 |
| commit | f443ddf1057776ed99d5006bbbefb018fcf7ce3a (patch) | |
| tree | 621e33c0649427125139c5a28b4ed4e3364ecc66 /drivers | |
| parent | USB: unusual_devs entry for Nokia 3250 (diff) | |
| download | linux-f443ddf1057776ed99d5006bbbefb018fcf7ce3a.tar.xz linux-f443ddf1057776ed99d5006bbbefb018fcf7ce3a.zip | |
USB: UHCI: Don't test the Short Packet Detect bit
Apparently some UHCI controllers change the value of the Short Packet
Detect (SPD) bit in the TD status word -- presumably when they receive a
short packet. This patch (as759) changes uhci-hcd to avoid assuming
that the bit is unchanged; in fact, the driver no longer looks at SPD at
all.
This fixes the second problem reported in Bugzilla #6752.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/uhci-q.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index c9d72ac0a1d7..66c3f61bc9d1 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -943,7 +943,9 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb) /* We received a short packet */ if (urb->transfer_flags & URB_SHORT_NOT_OK) ret = -EREMOTEIO; - else if (ctrlstat & TD_CTRL_SPD) + + /* Fixup needed only if this isn't the URB's last TD */ + else if (&td->list != urbp->td_list.prev) ret = 1; } |