linux-kernel - [PATCH linux-next] rt2x00: rt2x00pci_regbusy_read()

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Date:	Mon, 18 Feb 2013 12:56:28 -0700
From:	Tim Gardner <tim.gardner@...onical.com>
To:	linux-kernel@...r.kernel.org
Cc:	Tim Gardner <tim.gardner@...onical.com>,
	Ivo van Doorn <IvDoorn@...il.com>,
	Gertjan van Wingerde <gwingerde@...il.com>,
	Helmut Schaa <helmut.schaa@...glemail.com>,
	"John W. Linville" <linville@...driver.com>,
	linux-wireless@...r.kernel.org, users@...x00.serialmonkey.com,
	netdev@...r.kernel.org, stable@...r.kernel.org
Subject: [PATCH linux-next] rt2x00: rt2x00pci_regbusy_read() - only print register access failure once

BugLink: http://bugs.launchpad.net/bugs/1128840

It appears that when this register read fails it never recovers, so
I think there is no need to repeat the same error message ad infinitum.

Cc: Ivo van Doorn <IvDoorn@...il.com>
Cc: Gertjan van Wingerde <gwingerde@...il.com>
Cc: Helmut Schaa <helmut.schaa@...glemail.com>
Cc: "John W. Linville" <linville@...driver.com>
Cc: linux-wireless@...r.kernel.org
Cc: users@...x00.serialmonkey.com
Cc: netdev@...r.kernel.org
Cc: stable@...r.kernel.org
Signed-off-by: Tim Gardner <tim.gardner@...onical.com>
---

This patch applies as far back as 3.0.65 (and maybe older but that is
as far back as I checked).

 drivers/net/wireless/rt2x00/rt2x00pci.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index a0c8cae..b1c673e 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -52,8 +52,8 @@ int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev,
 		udelay(REGISTER_BUSY_DELAY);
 	}
 
-	ERROR(rt2x00dev, "Indirect register access failed: "
-	      "offset=0x%.08x, value=0x%.08x\n", offset, *reg);
+	printk_once(KERN_ERR "%s() Indirect register access failed: "
+	      "offset=0x%.08x, value=0x%.08x\n", __func__, offset, *reg);
 	*reg = ~0;
 
 	return 0;
-- 
1.7.9.5

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