[PATCH] watchdog: cpwd: Convert timers to use timer_setup()

From: Kees Cook
Date: Wed Oct 25 2017 - 06:32:20 EST


In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. Switches to using the global that is
used everywhere else.

Cc: Wim Van Sebroeck <wim@xxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: linux-watchdog@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
drivers/watchdog/cpwd.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/watchdog/cpwd.c b/drivers/watchdog/cpwd.c
index 3d43775548e5..aee0b25cf10d 100644
--- a/drivers/watchdog/cpwd.c
+++ b/drivers/watchdog/cpwd.c
@@ -230,9 +230,9 @@ static void cpwd_resetbrokentimer(struct cpwd *p, int index)
* interrupts within the PLD so me must continually
* reset the timers ad infinitum.
*/
-static void cpwd_brokentimer(unsigned long data)
+static void cpwd_brokentimer(struct timer_list *unused)
{
- struct cpwd *p = (struct cpwd *) data;
+ struct cpwd *p = cpwd_device;
int id, tripped = 0;

/* kill a running timer instance, in case we
@@ -275,7 +275,7 @@ static void cpwd_stoptimer(struct cpwd *p, int index)

if (p->broken) {
p->devs[index].runstatus |= WD_STAT_BSTOP;
- cpwd_brokentimer((unsigned long) p);
+ cpwd_brokentimer(NULL);
}
}
}
@@ -608,7 +608,7 @@ static int cpwd_probe(struct platform_device *op)
}

if (p->broken) {
- setup_timer(&cpwd_timer, cpwd_brokentimer, (unsigned long)p);
+ timer_setup(&cpwd_timer, cpwd_brokentimer, 0);
cpwd_timer.expires = WD_BTIMEOUT;

pr_info("PLD defect workaround enabled for model %s\n",
--
2.7.4


--
Kees Cook
Pixel Security