diff options
| author | Alexandr Ivanov <alexandr.sky@gmail.com> | 2016-04-22 13:17:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-26 16:08:02 -0700 |
| commit | d2510342fe93d5ac8b807bc1d44b613eb5d9c64d (patch) | |
| tree | ba156a049060f81a32cc6546e5d589ddd8472756 /drivers/usb/host/xhci.h | |
| parent | 5f2e5fb873e269fcb806165715d237f0de4ecf1d (diff) | |
| download | talos-obmc-linux-d2510342fe93d5ac8b807bc1d44b613eb5d9c64d.tar.gz talos-obmc-linux-d2510342fe93d5ac8b807bc1d44b613eb5d9c64d.zip | |
usb: xhci: merge xhci_queue_bulk_tx and queue_bulk_sg_tx functions
In drivers/usb/host/xhci-ring.c there are two functions
(xhci_queue_bulk_tx and queue_bulk_sg_tx) that are very similar,
so a lot of code duplication.
This patch merges these functions into to one xhci_queue_bulk_tx.
Also counting the needed TRBs is merged and refactored.
Signed-off-by: Alexandr Ivanov <alexandr.sky@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 6c629c97f8ad..8fd35a65913d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1338,6 +1338,9 @@ union xhci_trb { /* TRB buffer pointers can't cross 64KB boundaries */ #define TRB_MAX_BUFF_SHIFT 16 #define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT) +/* How much data is left before the 64KB boundary? */ +#define TRB_BUFF_LEN_UP_TO_BOUNDARY(addr) (TRB_MAX_BUFF_SIZE - \ + (addr & (TRB_MAX_BUFF_SIZE - 1))) struct xhci_segment { union xhci_trb *trbs; |
