diff options
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 23 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 22 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 1 |
3 files changed, 23 insertions, 23 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index ac57f538f957..4e51343ddffc 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c | |||
| @@ -1601,6 +1601,29 @@ static int xhci_check_trb_in_td_math(struct xhci_hcd *xhci, gfp_t mem_flags) | |||
| 1601 | return 0; | 1601 | return 0; |
| 1602 | } | 1602 | } |
| 1603 | 1603 | ||
| 1604 | static void xhci_set_hc_event_deq(struct xhci_hcd *xhci) | ||
| 1605 | { | ||
| 1606 | u64 temp; | ||
| 1607 | dma_addr_t deq; | ||
| 1608 | |||
| 1609 | deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, | ||
| 1610 | xhci->event_ring->dequeue); | ||
| 1611 | if (deq == 0 && !in_interrupt()) | ||
| 1612 | xhci_warn(xhci, "WARN something wrong with SW event ring " | ||
| 1613 | "dequeue ptr.\n"); | ||
| 1614 | /* Update HC event ring dequeue pointer */ | ||
| 1615 | temp = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); | ||
| 1616 | temp &= ERST_PTR_MASK; | ||
| 1617 | /* Don't clear the EHB bit (which is RW1C) because | ||
| 1618 | * there might be more events to service. | ||
| 1619 | */ | ||
| 1620 | temp &= ~ERST_EHB; | ||
| 1621 | xhci_dbg(xhci, "// Write event ring dequeue pointer, " | ||
| 1622 | "preserving EHB bit\n"); | ||
| 1623 | xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp, | ||
| 1624 | &xhci->ir_set->erst_dequeue); | ||
| 1625 | } | ||
| 1626 | |||
| 1604 | 1627 | ||
| 1605 | int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) | 1628 | int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) |
| 1606 | { | 1629 | { |
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 7dfd17707d53..f479f73711ac 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c | |||
| @@ -301,28 +301,6 @@ static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, | |||
| 301 | return 1; | 301 | return 1; |
| 302 | } | 302 | } |
| 303 | 303 | ||
| 304 | void xhci_set_hc_event_deq(struct xhci_hcd *xhci) | ||
| 305 | { | ||
| 306 | u64 temp; | ||
| 307 | dma_addr_t deq; | ||
| 308 | |||
| 309 | deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, | ||
| 310 | xhci->event_ring->dequeue); | ||
| 311 | if (deq == 0 && !in_interrupt()) | ||
| 312 | xhci_warn(xhci, "WARN something wrong with SW event ring " | ||
| 313 | "dequeue ptr.\n"); | ||
| 314 | /* Update HC event ring dequeue pointer */ | ||
| 315 | temp = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); | ||
| 316 | temp &= ERST_PTR_MASK; | ||
| 317 | /* Don't clear the EHB bit (which is RW1C) because | ||
| 318 | * there might be more events to service. | ||
| 319 | */ | ||
| 320 | temp &= ~ERST_EHB; | ||
| 321 | xhci_dbg(xhci, "// Write event ring dequeue pointer, preserving EHB bit\n"); | ||
| 322 | xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp, | ||
| 323 | &xhci->ir_set->erst_dequeue); | ||
| 324 | } | ||
| 325 | |||
| 326 | /* Ring the host controller doorbell after placing a command on the ring */ | 304 | /* Ring the host controller doorbell after placing a command on the ring */ |
| 327 | void xhci_ring_cmd_db(struct xhci_hcd *xhci) | 305 | void xhci_ring_cmd_db(struct xhci_hcd *xhci) |
| 328 | { | 306 | { |
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 25e108e981fa..34a60d9f056a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h | |||
| @@ -1400,7 +1400,6 @@ struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, | |||
| 1400 | int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code); | 1400 | int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code); |
| 1401 | void xhci_ring_cmd_db(struct xhci_hcd *xhci); | 1401 | void xhci_ring_cmd_db(struct xhci_hcd *xhci); |
| 1402 | void *xhci_setup_one_noop(struct xhci_hcd *xhci); | 1402 | void *xhci_setup_one_noop(struct xhci_hcd *xhci); |
| 1403 | void xhci_set_hc_event_deq(struct xhci_hcd *xhci); | ||
| 1404 | int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id); | 1403 | int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id); |
| 1405 | int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, | 1404 | int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, |
| 1406 | u32 slot_id); | 1405 | u32 slot_id); |
