From: Richard Genoud <richard.genoud@gmail.com>
To: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Gertjan van Wingerde <gwingerde@gmail.com>,
Helmut Schaa <helmut.schaa@googlemail.com>,
"John W. Linville" <linville@tuxdriver.com>,
linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
Richard Genoud <richard.genoud@gmail.com>
Subject: [PATCH] rt2x00: BUG: remove double loop on REGISTER_BUSY_COUNT
Date: Thu, 3 Apr 2014 16:12:07 +0200 [thread overview]
Message-ID: <1396534327-12971-1-git-send-email-richard.genoud@gmail.com> (raw)
rt2x00usb_register_read_lock() calls rt2x00usb_vendor_req_buff_lock()
that calls rt2x00usb_vendor_request() which is already looping up to
REGISTER_BUSY_COUNT times.
So this loop is not needed.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
---
drivers/net/wireless/rt2x00/rt2x00usb.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 10572452cc21..14142b099019 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -148,12 +148,9 @@ int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
return -ENODEV;
- for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
- rt2x00usb_register_read_lock(rt2x00dev, offset, reg);
- if (!rt2x00_get_field32(*reg, field))
- return 1;
- udelay(REGISTER_BUSY_DELAY);
- }
+ rt2x00usb_register_read_lock(rt2x00dev, offset, reg);
+ if (!rt2x00_get_field32(*reg, field))
+ return 1;
rt2x00_err(rt2x00dev, "Indirect register access failed: offset=0x%.08x, value=0x%.08x\n",
offset, *reg);
--
1.8.5.5
next reply other threads:[~2014-04-03 14:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-03 14:12 Richard Genoud [this message]
2014-04-03 15:37 ` [PATCH] rt2x00: BUG: remove double loop on REGISTER_BUSY_COUNT Jakub Kiciński
2014-04-03 15:46 ` Richard Genoud
2014-04-04 8:19 ` Stanislaw Gruszka
2014-04-04 9:01 ` Jakub Kiciński
2014-04-04 14:06 ` Stanislaw Gruszka
2014-04-04 14:17 ` Richard Genoud
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