diff options
| author | Jerry Hoemann <jerry.hoemann@hpe.com> | 2019-05-17 14:59:40 -0600 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2019-07-08 16:10:09 +0200 |
| commit | bb721d6b9eed631eed5d22bb8dfbb0c0717a67aa (patch) | |
| tree | 01e5e3efb55d1bfe4e6a0b2b8e4cbe39f8d808b8 /drivers/watchdog | |
| parent | c22d8e38e475c3a9fcc5923f98ac8cfdee8b1ad7 (diff) | |
watchdog/hpwdt: Have core ping watchdog.
Instead of stopping the hw timer during probe, have the core update
the timer if the timer is already running.
Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/hpwdt.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c index 6ad6ce53ed52..937c726e8e7f 100644 --- a/drivers/watchdog/hpwdt.c +++ b/drivers/watchdog/hpwdt.c @@ -55,6 +55,11 @@ static const struct pci_device_id hpwdt_blacklist[] = { /* * Watchdog operations */ +static int hpwdt_hw_is_running(void) +{ + return ioread8(hpwdt_timer_con) & 0x01; +} + static int hpwdt_start(struct watchdog_device *wdd) { int control = 0x81 | (pretimeout ? 0x4 : 0); @@ -298,8 +303,11 @@ static int hpwdt_init_one(struct pci_dev *dev, hpwdt_timer_reg = pci_mem_addr + 0x70; hpwdt_timer_con = pci_mem_addr + 0x72; - /* Make sure that timer is disabled until /dev/watchdog is opened */ - hpwdt_stop(); + /* Have the core update running timer until user space is ready */ + if (hpwdt_hw_is_running()) { + dev_info(&dev->dev, "timer is running\n"); + set_bit(WDOG_HW_RUNNING, &hpwdt_dev.status); + } /* Initialize NMI Decoding functionality */ retval = hpwdt_init_nmi_decoding(dev); |