linux-kernel - [PATCH v3 4/4] xhci: Convert to use list

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Message-Id: <20221122153516.52577-4-andriy.shevchenko@linux.intel.com>
Date:   Tue, 22 Nov 2022 17:35:16 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Jakob Koschel <jakobkoschel@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Kevin Cernekee <cernekee@...il.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH v3 4/4] xhci: Convert to use list_count()

The list API now provides the list_count() to help with counting
existing nodes in the list. Utilise it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
v3: no change
v2: no change
 drivers/usb/host/xhci-ring.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index ad81e9a508b1..817c31e3b0c8 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2532,7 +2532,6 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	union xhci_trb *ep_trb;
 	int status = -EINPROGRESS;
 	struct xhci_ep_ctx *ep_ctx;
-	struct list_head *tmp;
 	u32 trb_comp_code;
 	int td_num = 0;
 	bool handling_skipped_tds = false;
@@ -2580,10 +2579,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	}
 
 	/* Count current td numbers if ep->skip is set */
-	if (ep->skip) {
-		list_for_each(tmp, &ep_ring->td_list)
-			td_num++;
-	}
+	if (ep->skip)
+		td_num += list_count(&ep_ring->td_list);
 
 	/* Look for common error cases */
 	switch (trb_comp_code) {
-- 
2.35.1