From: Lennert Buytenhek <buytenh@wantstofly.org>
Date: Thu, 22 Oct 2009 18:20:16 +0000 (+0200)
Subject: mwl8k: use cond_resched() when loading firmware blocks
X-Git-Tag: v3.12-rc1~12159^2~449^2~71
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3d76e82c9538d8104e578ca460d35f214bfddfd3;p=kernel%2Fkernel-generic.git

mwl8k: use cond_resched() when loading firmware blocks

Since each firmware block takes on the order of several hundred usec
to upload to the hardware, using msleep in the inner loop would make
the firmware loading process take a lot more time than just doing
busy-waiting like we do now.  But if we keep the busy-waiting, we can
at least add a cond_resched() to the inner loop so that we give other
tasks a chance to run while the firmware is being loaded.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index fcf7139..496d3c5 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
 #include <linux/pci.h>
@@ -428,6 +429,7 @@ mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 			break;
 		}
 
+		cond_resched();
 		udelay(1);
 	} while (--loops);