[WATCHDOG] w83697hf/hg WDT driver - patch 14

This is patch 14 in the series of patches that converts
Marcus Junker's w83697hf watchdog driver to Samuel Tardieau's
w83697hf/hg watchdog driver.

This patch contains following changes:
 - Clean-up initialization code (part 1: remove
   w83697hf_select_wd_register() and
   w83697hf_unselect_wd_register() functions).
 - Make sure that the watchdog device is stopped
   as soon as we found it.

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 6 insertions, 21 deletions

diff --git a/drivers/char/watchdog/w83697hf_wdt.c b/drivers/char/watchdog/w83697hf_wdt.c
index 2b3ce434c196..1ea43bf2c35d 100644
--- a/drivers/char/watchdog/w83697hf_wdt.c
+++ b/drivers/char/watchdog/w83697hf_wdt.c
@@ -121,28 +121,13 @@ w83697hf_deselect_wdt(void)
 }
 
 static void
-w83697hf_select_wd_register(void)
-{
-        w83697hf_unlock();
-
-        w83697hf_set_reg(0x29, 0x20);   /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
-
-        w83697hf_set_reg(0x07, 0x08);   /* Switch to logic device 8 (GPIO2) */
-        w83697hf_set_reg(0x30, 0x01);   /* Enable timer/activate GPIO2 via bit 0 */
-}
-
-static void
-w83697hf_unselect_wd_register(void)
-{
-        w83697hf_lock();
-}
-
-static void
 w83697hf_init(void)
 {
         unsigned char t;
 
-        w83697hf_select_wd_register();
+        w83697hf_select_wdt();
+
+        w83697hf_set_reg(0x29, 0x20);   /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
 
         t = w83697hf_get_reg(0xF3);     /* Read CRF3 */
         if (t != 0) {
@@ -153,7 +138,7 @@ w83697hf_init(void)
         t&=~0x0C;                       /* set second mode & disable keyboard turning off watchdog */
         w83697hf_set_reg(0xF4, t);      /* Write back to CRF4 */
 
-        w83697hf_unselect_wd_register();
+        w83697hf_deselect_wdt();
 }
 
 static int
@@ -412,6 +397,8 @@ wdt_init(void)
         goto out;
 
 found:
+        w83697hf_init();
+        wdt_disable();  /* Disable watchdog until first use */
 
         if (wdt_set_heartbeat(timeout)) {
                 wdt_set_heartbeat(WATCHDOG_TIMEOUT);
@@ -419,8 +406,6 @@ found:
                         WATCHDOG_TIMEOUT);
         }
 
-        w83697hf_init();
-
         ret = register_reboot_notifier(&wdt_notifier);
         if (ret != 0) {
                 printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",