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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2017-01-23 14:20:02 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-25 10:57:35 +0100 |
| commit | daa47f2132dce31fcab7c6ebdcb957e598c768f2 (patch) | |
| tree | 7180d6ac32288445ae96d677759a65d49048a76b /drivers/usb/host | |
| parent | fb79a6da459b20554151eed84c991cd9bd35ff15 (diff) | |
| download | linux-daa47f2132dce31fcab7c6ebdcb957e598c768f2.tar.gz linux-daa47f2132dce31fcab7c6ebdcb957e598c768f2.tar.bz2 linux-daa47f2132dce31fcab7c6ebdcb957e598c768f2.zip | |
usb: xhci: use list_is_singular for cmd_list
Use list_is_singular() to check if cmd_list has only one entry.
[use list_empty() in queue command instead -Mathias]
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.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')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 2374a13efb56..b11f4797e6a0 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1425,7 +1425,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, } /* restart timer if this wasn't the last command */ - if (cmd->cmd_list.next != &xhci->cmd_list) { + if (!list_is_singular(&xhci->cmd_list)) { xhci->current_cmd = list_entry(cmd->cmd_list.next, struct xhci_command, cmd_list); xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); @@ -3802,14 +3802,15 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, } cmd->command_trb = xhci->cmd_ring->enqueue; - list_add_tail(&cmd->cmd_list, &xhci->cmd_list); /* if there are no other commands queued we start the timeout timer */ - if (xhci->cmd_list.next == &cmd->cmd_list) { + if (list_empty(&xhci->cmd_list)) { xhci->current_cmd = cmd; xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); } + list_add_tail(&cmd->cmd_list, &xhci->cmd_list); + queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, field4 | xhci->cmd_ring->cycle_state); return 0; |