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watchdog: sbc_fitpc2_wdt: fixed I/O operations order

There are fitpc2 compatible boards that hang with existent i/o
operations order. Solution is to switch between writing to data
and command ports.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Denis Turischev 15 年之前
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共有 1 个文件被更改,包括 2 次插入2 次删除
  1. 2 2
      drivers/watchdog/sbc_fitpc2_wdt.c

+ 2 - 2
drivers/watchdog/sbc_fitpc2_wdt.c

@@ -45,10 +45,10 @@ static DEFINE_SPINLOCK(wdt_lock);
 
 
 static void wdt_send_data(unsigned char command, unsigned char data)
 static void wdt_send_data(unsigned char command, unsigned char data)
 {
 {
-	outb(command, COMMAND_PORT);
-	msleep(100);
 	outb(data, DATA_PORT);
 	outb(data, DATA_PORT);
 	msleep(200);
 	msleep(200);
+	outb(command, COMMAND_PORT);
+	msleep(100);
 }
 }
 
 
 static void wdt_enable(void)
 static void wdt_enable(void)