[PATCH] prism54: use msleep()

From: Nishanth Aravamudan <nacc@us.ibm.com>

Use msleep() instead of schedule_timeout() to guarantee task delays as
expected.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Maximilian Attems <janitor@sternwelten.at>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/net/wireless/prism54/islpci_dev.c
===================================================================
--- linux-kj.orig/drivers/net/wireless/prism54/islpci_dev.c
+++ linux-kj/drivers/net/wireless/prism54/islpci_dev.c
@@ -439,8 +439,7 @@ prism54_bring_down(islpci_private *priv)
 	wmb();
 
 	/* wait a while for the device to reset */
-	set_current_state(TASK_UNINTERRUPTIBLE);
-	schedule_timeout(50*HZ/1000);
+	msleep(50);
 
 	return 0;
 }