Re: [PATCH 1/6] drivers: usb: remove usage of list iterator past the loop body
From: Dan Carpenter <hidden>
Date: 2022-02-28 11:28:13
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On Mon, Feb 28, 2022 at 12:08:17PM +0100, Jakob Koschel wrote:
quoted hunk ↗ jump to hunk
diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c index 9040a0561466..0fd0307bc07b 100644 --- a/drivers/usb/gadget/udc/at91_udc.c +++ b/drivers/usb/gadget/udc/at91_udc.c@@ -150,13 +150,14 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep) if (list_empty (&ep->queue)) seq_printf(s, "\t(queue empty)\n"); - else list_for_each_entry (req, &ep->queue, queue) { - unsigned length = req->req.actual; + else + list_for_each_entry(req, &ep->queue, queue) { + unsigned int length = req->req.actual; - seq_printf(s, "\treq %p len %d/%d buf %p\n", - &req->req, length, - req->req.length, req->req.buf); - } + seq_printf(s, "\treq %p len %d/%d buf %p\n", + &req->req, length, + req->req.length, req->req.buf); + }
Don't make unrelated white space changes. It just makes the patch harder to review. As you're writing the patch make note of any additional changes and do them later in a separate patch. Also a multi-line indent gets curly braces for readability even though it's not required by C. And then both sides would get curly braces.
quoted hunk ↗ jump to hunk
spin_unlock_irqrestore(&udc->lock, flags); }@@ -226,7 +227,7 @@ static int proc_udc_show(struct seq_file *s, void *unused) if (udc->enabled && udc->vbus) { proc_ep_show(s, &udc->ep[0]); - list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
Another unrelated change.
if (ep->ep.desc) proc_ep_show(s, ep); }
[ snip ]
quoted hunk ↗ jump to hunk
diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index 7c38057dcb4a..bb59200f1596 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c@@ -926,7 +926,8 @@ static int net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req) { struct net2272_ep *ep; - struct net2272_request *req; + struct net2272_request *req = NULL; + struct net2272_request *tmp; unsigned long flags; int stopped;@@ -939,11 +940,13 @@ net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req) ep->stopped = 1; /* make sure it's still queued on this endpoint */ - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) + list_for_each_entry(tmp, &ep->queue, queue) { + if (&tmp->req == _req) { + req = tmp; break; + } } - if (&req->req != _req) { + if (!req) { ep->stopped = stopped; spin_unlock_irqrestore(&ep->dev->lock, flags); return -EINVAL;@@ -954,7 +957,6 @@ net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req) dev_dbg(ep->dev->dev, "unlink (%s) pio\n", _ep->name); net2272_done(ep, req, -ECONNRESET); } - req = NULL;
Another unrelated change. These are all good changes but send them as separate patches.
ep->stopped = stopped; spin_unlock_irqrestore(&ep->dev->lock, flags);
regards, dan carpenter