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Date: Sat, 19 Dec 2015 00:34:27 +0800
From: Geliang Tang <geliangtang@....com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc: Geliang Tang <geliangtang@....com>, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/9] usb: host: max3421-hcd: use list_for_each_entry*
Use list_for_each_entry*() instead of list_for_each*() to simplify
the code.
Signed-off-by: Geliang Tang <geliangtang@....com>
---
drivers/usb/host/max3421-hcd.c | 25 +++++++++----------------
1 file changed, 9 insertions(+), 16 deletions(-)
diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c
index bd98706..7257962 100644
--- a/drivers/usb/host/max3421-hcd.c
+++ b/drivers/usb/host/max3421-hcd.c
@@ -665,7 +665,6 @@ max3421_select_and_start_urb(struct usb_hcd *hcd)
struct max3421_ep *max3421_ep;
int epnum, force_toggles = 0;
struct usb_host_endpoint *ep;
- struct list_head *pos;
unsigned long flags;
spin_lock_irqsave(&max3421_hcd->lock, flags);
@@ -673,10 +672,9 @@ max3421_select_and_start_urb(struct usb_hcd *hcd)
for (;
max3421_hcd->sched_pass < SCHED_PASS_DONE;
++max3421_hcd->sched_pass)
- list_for_each(pos, &max3421_hcd->ep_list) {
+ list_for_each_entry(max3421_ep, &max3421_hcd->ep_list,
+ ep_list) {
urb = NULL;
- max3421_ep = container_of(pos, struct max3421_ep,
- ep_list);
ep = max3421_ep->ep;
switch (usb_endpoint_type(&ep->desc)) {
@@ -748,7 +746,8 @@ max3421_select_and_start_urb(struct usb_hcd *hcd)
}
/* move current ep to tail: */
- list_move_tail(pos, &max3421_hcd->ep_list);
+ list_move_tail(&max3421_ep->ep_list,
+ &max3421_hcd->ep_list);
curr_urb = urb;
goto done;
}
@@ -797,19 +796,16 @@ max3421_check_unlink(struct usb_hcd *hcd)
{
struct spi_device *spi = to_spi_device(hcd->self.controller);
struct max3421_hcd *max3421_hcd = hcd_to_max3421(hcd);
- struct list_head *pos, *upos, *next_upos;
struct max3421_ep *max3421_ep;
struct usb_host_endpoint *ep;
- struct urb *urb;
+ struct urb *urb, *next;
unsigned long flags;
int retval = 0;
spin_lock_irqsave(&max3421_hcd->lock, flags);
- list_for_each(pos, &max3421_hcd->ep_list) {
- max3421_ep = container_of(pos, struct max3421_ep, ep_list);
+ list_for_each_entry(max3421_ep, &max3421_hcd->ep_list, ep_list) {
ep = max3421_ep->ep;
- list_for_each_safe(upos, next_upos, &ep->urb_list) {
- urb = container_of(upos, struct urb, urb_list);
+ list_for_each_entry_safe(urb, next, &ep->urb_list, urb_list) {
if (urb->unlinked) {
retval = 1;
dev_dbg(&spi->dev, "%s: URB %p unlinked=%d",
@@ -1184,22 +1180,19 @@ dump_eps(struct usb_hcd *hcd)
struct max3421_hcd *max3421_hcd = hcd_to_max3421(hcd);
struct max3421_ep *max3421_ep;
struct usb_host_endpoint *ep;
- struct list_head *pos, *upos;
char ubuf[512], *dp, *end;
unsigned long flags;
struct urb *urb;
int epnum, ret;
spin_lock_irqsave(&max3421_hcd->lock, flags);
- list_for_each(pos, &max3421_hcd->ep_list) {
- max3421_ep = container_of(pos, struct max3421_ep, ep_list);
+ list_for_each_entry(max3421_ep, &max3421_hcd->ep_list, ep_list) {
ep = max3421_ep->ep;
dp = ubuf;
end = dp + sizeof(ubuf);
*dp = '\0';
- list_for_each(upos, &ep->urb_list) {
- urb = container_of(upos, struct urb, urb_list);
+ list_for_each_entry(urb, &ep->urb_list, urb_list) {
ret = snprintf(dp, end - dp, " %p(%d.%s %d/%d)", urb,
usb_pipetype(urb->pipe),
usb_urb_dir_in(urb) ? "IN" : "OUT",
--
2.5.0
--
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