Re: [PATCH 09/13] timer: Remove users of expire and data arguments to DEFINE_TIMER

From: Guenter Roeck
Date: Wed Oct 04 2017 - 20:12:42 EST

On 10/04/2017 04:27 PM, Kees Cook wrote:
The expire and data arguments of DEFINE_TIMER are only used in two places
and are ignored by the code (malta-display.c only uses mod_timer(),
never add_timer(), so the preset expires value is ignored). Set both
sets of arguments to zero.

Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Wim Van Sebroeck <wim@xxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: linux-watchdog@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>

For watchdog:

Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx>

arch/mips/mti-malta/malta-display.c | 6 +++---
drivers/watchdog/alim7101_wdt.c | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/mips/mti-malta/malta-display.c b/arch/mips/mti-malta/malta-display.c
index d4f807191ecd..ac813158b9b8 100644
--- a/arch/mips/mti-malta/malta-display.c
+++ b/arch/mips/mti-malta/malta-display.c
@@ -36,10 +36,10 @@ void mips_display_message(const char *str)
-static void scroll_display_message(unsigned long data);
-static DEFINE_TIMER(mips_scroll_timer, scroll_display_message, HZ, 0);
+static void scroll_display_message(unsigned long unused);
+static DEFINE_TIMER(mips_scroll_timer, scroll_display_message, 0, 0);
-static void scroll_display_message(unsigned long data)
+static void scroll_display_message(unsigned long unused)
if (display_count == max_display_count)
diff --git a/drivers/watchdog/alim7101_wdt.c b/drivers/watchdog/alim7101_wdt.c
index 665e0e7dfe1e..3c1f6ac68ea9 100644
--- a/drivers/watchdog/alim7101_wdt.c
+++ b/drivers/watchdog/alim7101_wdt.c
@@ -71,7 +71,7 @@ MODULE_PARM_DESC(use_gpio,
"Use the gpio watchdog (required by old cobalt boards).");
static void wdt_timer_ping(unsigned long);
-static DEFINE_TIMER(timer, wdt_timer_ping, 0, 1);
+static DEFINE_TIMER(timer, wdt_timer_ping, 0, 0);
static unsigned long next_heartbeat;
static unsigned long wdt_is_open;
static char wdt_expect_close;
@@ -87,7 +87,7 @@ MODULE_PARM_DESC(nowayout,
* Whack the dog
-static void wdt_timer_ping(unsigned long data)
+static void wdt_timer_ping(unsigned long unused)
/* If we got a heartbeat pulse within the WDT_US_INTERVAL
* we agree to ping the WDT