diff options
| author | Jerry Hoemann <jerry.hoemann@hpe.com> | 2018-02-26 04:22:26 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2018-03-03 17:04:18 +0100 |
| commit | ccfd69213d806fb4f1de3268776287109e9821f5 (patch) | |
| tree | 183d79e11422e2642c0f724cd88a269511d740d3 /drivers/watchdog/hpwdt.c | |
| parent | watchdog: hpwdt: Programable Pretimeout NMI (diff) | |
| download | linux-ccfd69213d806fb4f1de3268776287109e9821f5.tar.xz linux-ccfd69213d806fb4f1de3268776287109e9821f5.zip | |
watchdog: hpwdt: Add dynamic debug
Add a few dynamic debug messages to aid in module level debug.
Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/hpwdt.c')
| -rw-r--r-- | drivers/watchdog/hpwdt.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c index b8205c6e61c1..b82bbeed0e43 100644 --- a/drivers/watchdog/hpwdt.c +++ b/drivers/watchdog/hpwdt.c @@ -59,6 +59,7 @@ static int hpwdt_start(struct watchdog_device *wdd) int control = 0x81 | (pretimeout ? 0x4 : 0); int reload = SECS_TO_TICKS(wdd->timeout); + dev_dbg(wdd->parent, "start watchdog 0x%08x:0x%02x\n", reload, control); iowrite16(reload, hpwdt_timer_reg); iowrite8(control, hpwdt_timer_con); @@ -69,6 +70,8 @@ static void hpwdt_stop(void) { unsigned long data; + pr_debug("stop watchdog\n"); + data = ioread8(hpwdt_timer_con); data &= 0xFE; iowrite8(data, hpwdt_timer_con); @@ -85,6 +88,7 @@ static int hpwdt_ping(struct watchdog_device *wdd) { int reload = SECS_TO_TICKS(wdd->timeout); + dev_dbg(wdd->parent, "ping watchdog 0x%08x\n", reload); iowrite16(reload, hpwdt_timer_reg); return 0; @@ -97,8 +101,11 @@ static unsigned int hpwdt_gettimeleft(struct watchdog_device *wdd) static int hpwdt_settimeout(struct watchdog_device *wdd, unsigned int val) { + dev_dbg(wdd->parent, "set_timeout = %d\n", val); + wdd->timeout = val; if (val <= wdd->pretimeout) { + dev_dbg(wdd->parent, "pretimeout < timeout. Setting to zero\n"); wdd->pretimeout = 0; pretimeout = 0; if (watchdog_active(wdd)) @@ -114,12 +121,16 @@ static int hpwdt_set_pretimeout(struct watchdog_device *wdd, unsigned int req) { unsigned int val = 0; + dev_dbg(wdd->parent, "set_pretimeout = %d\n", req); if (req) { val = PRETIMEOUT_SEC; if (val >= wdd->timeout) return -EINVAL; } + if (val != req) + dev_dbg(wdd->parent, "Rounding pretimeout to: %d\n", val); + wdd->pretimeout = val; pretimeout = !!val; |