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Subject[PATCH RESEND v2 2/6] usb: musb: Introduce musb_qh_empty() helper function
Date
Use musb_qh_empty() instead of &qh->hep->urb_list to avoid code
duplicating.

Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
---
drivers/usb/musb/musb_host.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 3ffea6a5e022..37aa9f6155d9 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -80,6 +80,11 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
struct urb *urb, int is_out,
u8 *buf, u32 offset, u32 len);

+static bool musb_qh_empty(struct musb_qh *qh)
+{
+ return list_empty(&qh->hep->urb_list);
+}
+
/*
* Clear TX fifo. Needed to avoid BABBLE errors.
*/
@@ -342,7 +347,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb,
/* reclaim resources (and bandwidth) ASAP; deschedule it, and
* invalidate qh as soon as list_empty(&hep->urb_list)
*/
- if (list_empty(&qh->hep->urb_list)) {
+ if (musb_qh_empty(qh)) {
struct list_head *head;
struct dma_controller *dma = musb->dma_controller;

@@ -2430,7 +2435,7 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
/* If nothing else (usually musb_giveback) is using it
* and its URB list has emptied, recycle this qh.
*/
- if (ready && list_empty(&qh->hep->urb_list)) {
+ if (ready && musb_qh_empty(qh)) {
qh->hep->hcpriv = NULL;
list_del(&qh->ring);
kfree(qh);
@@ -2475,7 +2480,7 @@ musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep)
/* Then nuke all the others ... and advance the
* queue on hw_ep (e.g. bulk ring) when we're done.
*/
- while (!list_empty(&hep->urb_list)) {
+ while (!musb_qh_empty(qh)) {
urb = next_urb(qh);
urb->status = -ESHUTDOWN;
musb_advance_schedule(musb, urb, qh->hw_ep, is_in);
@@ -2485,7 +2490,7 @@ musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep)
* other transfers, and since !qh->is_ready nothing
* will activate any of these as it advances.
*/
- while (!list_empty(&hep->urb_list))
+ while (!musb_qh_empty(qh))
musb_giveback(musb, next_urb(qh), -ESHUTDOWN);

hep->hcpriv = NULL;
--
2.16.4
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