Use list_is_singular() to check if cmd_list has only one entry.
Signed-off-by: Lu Baolu <[email protected]>
---
drivers/usb/host/xhci-ring.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 95be9e8..40947e7 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1418,7 +1418,7 @@ 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);
mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT);
@@ -3787,7 +3787,7 @@ static int queue_command(struct xhci_hcd *xhci, struct
xhci_command *cmd,
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_is_singular(&xhci->cmd_list) &&
!timer_pending(&xhci->cmd_timer)) {
xhci->current_cmd = cmd;
mod_timer(&xhci->cmd_timer, jiffies + XHCI_CMD_DEFAULT_TIMEOUT);
--
2.1.4
--
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