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| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2009-08-27 14:35:53 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-10-05 09:32:49 -0700 |
| commit | fed392f6ec5c09647298b23519e366b3526c55ac (patch) | |
| tree | 08cddc7de39cd1721e85b4894e60f0ae3d590e26 | |
| parent | f9907731b59720884910cbef393fc0c006f6b7da (diff) | |
| download | linux-stable-fed392f6ec5c09647298b23519e366b3526c55ac.tar.gz linux-stable-fed392f6ec5c09647298b23519e366b3526c55ac.tar.bz2 linux-stable-fed392f6ec5c09647298b23519e366b3526c55ac.zip | |
USB: xhci: Make TRB completion code comparison readable.
commit 66d1eebce5cca916e0b08d961690bb01c64751ef upstream.
Use trb_comp_code instead of getting the completion code from the transfer
event every time.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 35374ddc31c1..e876fd372dd1 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -874,6 +874,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, struct urb *urb = 0; int status = -EINPROGRESS; struct xhci_ep_ctx *ep_ctx; + u32 trb_comp_code; xhci_dbg(xhci, "In %s\n", __func__); slot_id = TRB_TO_SLOT_ID(event->flags); @@ -931,7 +932,8 @@ static int handle_tx_event(struct xhci_hcd *xhci, (unsigned int) event->flags); /* Look for common error cases */ - switch (GET_COMP_CODE(event->transfer_len)) { + trb_comp_code = GET_COMP_CODE(event->transfer_len); + switch (trb_comp_code) { /* Skip codes that require special handling depending on * transfer type */ @@ -974,7 +976,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, /* Was this a control transfer? */ if (usb_endpoint_xfer_control(&td->urb->ep->desc)) { xhci_debug_trb(xhci, xhci->event_ring->dequeue); - switch (GET_COMP_CODE(event->transfer_len)) { + switch (trb_comp_code) { case COMP_SUCCESS: if (event_trb == ep_ring->dequeue) { xhci_warn(xhci, "WARN: Success on ctrl setup TRB without IOC set??\n"); @@ -1031,7 +1033,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, } } else { /* Maybe the event was for the data stage? */ - if (GET_COMP_CODE(event->transfer_len) != COMP_STOP_INVAL) { + if (trb_comp_code != COMP_STOP_INVAL) { /* We didn't stop on a link TRB in the middle */ td->urb->actual_length = td->urb->transfer_buffer_length - @@ -1043,7 +1045,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, } } } else { - switch (GET_COMP_CODE(event->transfer_len)) { + switch (trb_comp_code) { case COMP_SUCCESS: /* Double check that the HW transferred everything. */ if (event_trb != td->last_trb) { @@ -1120,14 +1122,14 @@ static int handle_tx_event(struct xhci_hcd *xhci, /* If the ring didn't stop on a Link or No-op TRB, add * in the actual bytes transferred from the Normal TRB */ - if (GET_COMP_CODE(event->transfer_len) != COMP_STOP_INVAL) + if (trb_comp_code != COMP_STOP_INVAL) td->urb->actual_length += TRB_LEN(cur_trb->generic.field[2]) - TRB_LEN(event->transfer_len); } } - if (GET_COMP_CODE(event->transfer_len) == COMP_STOP_INVAL || - GET_COMP_CODE(event->transfer_len) == COMP_STOP) { + if (trb_comp_code == COMP_STOP_INVAL || + trb_comp_code == COMP_STOP) { /* The Endpoint Stop Command completion will take care of any * stopped TDs. A stopped TD may be restarted, so don't update * the ring dequeue pointer or take this TD off any lists yet. |