diff options
| author | Alex Shi <alex.shi@linaro.org> | 2015-03-19 09:03:10 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-03-19 09:03:10 +0800 |
| commit | 47bbd44e18034d3277a29459d1f0c45e8d1c8d3e (patch) | |
| tree | 3ebdf7ef86be88fe0fbfeb378dc949ea59125d16 /drivers/usb/host | |
| parent | 0d590a1ecd1ad44b2dae2bcdc5a6cb24a7080489 (diff) | |
| parent | 8a5f782c33c04ea5c9b3ca6fb32d6039e2e5c0c9 (diff) | |
Merge tag 'v3.14.36' into linux-linaro-lsk-v3.14
This is the 3.14.36 stable release
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 10 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 8 |
2 files changed, 14 insertions, 4 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index faa8b98954d9..a95eee8ddc38 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2133,7 +2133,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, if (event_trb != ep_ring->dequeue) { /* The event was for the status stage */ if (event_trb == td->last_trb) { - if (td->urb->actual_length != 0) { + if (td->urb_length_set) { /* Don't overwrite a previously set error code */ if ((*status == -EINPROGRESS || *status == 0) && @@ -2147,7 +2147,13 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, td->urb->transfer_buffer_length; } } else { - /* Maybe the event was for the data stage? */ + /* + * Maybe the event was for the data stage? If so, update + * already the actual_length of the URB and flag it as + * set, so that it is not overwritten in the event for + * the last TRB. + */ + td->urb_length_set = true; td->urb->actual_length = td->urb->transfer_buffer_length - EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 96e9e780ccae..7225dd242bfa 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1,3 +1,4 @@ + /* * xHCI host controller driver * @@ -88,9 +89,10 @@ struct xhci_cap_regs { #define HCS_IST(p) (((p) >> 0) & 0xf) /* bits 4:7, max number of Event Ring segments */ #define HCS_ERST_MAX(p) (((p) >> 4) & 0xf) +/* bits 21:25 Hi 5 bits of Scratchpad buffers SW must allocate for the HW */ /* bit 26 Scratchpad restore - for save/restore HW state - not used yet */ -/* bits 27:31 number of Scratchpad buffers SW must allocate for the HW */ -#define HCS_MAX_SCRATCHPAD(p) (((p) >> 27) & 0x1f) +/* bits 27:31 Lo 5 bits of Scratchpad buffers SW must allocate for the HW */ +#define HCS_MAX_SCRATCHPAD(p) ((((p) >> 16) & 0x3e0) | (((p) >> 27) & 0x1f)) /* HCSPARAMS3 - hcs_params3 - bitmasks */ /* bits 0:7, Max U1 to U0 latency for the roothub ports */ @@ -1289,6 +1291,8 @@ struct xhci_td { struct xhci_segment *start_seg; union xhci_trb *first_trb; union xhci_trb *last_trb; + /* actual_length of the URB has already been set */ + bool urb_length_set; }; /* xHCI command default timeout value */ |