On 10/20/2017 03:54 PM, Jerry Hoemann wrote:
Add support for WDIOC_GETPRETIMEOUT ioctl so that user applications
can determine when the NMI should arrive.
Signed-off-by: Jerry Hoemann <jerry.hoemann@xxxxxxx>
---
drivers/watchdog/hpwdt.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 67fbe35..ef54b03 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -50,6 +50,7 @@
static bool nowayout = WATCHDOG_NOWAYOUT;
static char expect_release;
static unsigned long hpwdt_is_open;
+static const int pretimeout = 9;
static void __iomem *pci_mem_addr; /* the PCI-memory address */
static unsigned long __iomem *hpwdt_timer_reg;
@@ -622,6 +623,12 @@ static long hpwdt_ioctl(struct file *file, unsigned int cmd,
}
break;
+ case WDIOC_GETPRETIMEOUT:
+ ret = copy_to_user(argp, &pretimeout, sizeof(pretimeout));
+ if (ret)
+ ret = -EFAULT;
+ break;
+
case WDIOC_SETTIMEOUT:
ret = get_user(new_margin, p);
if (ret)
Can you please convert the driver to use the watchdog subsystem instead ?
If there are still improvements needed afterwards, they can still be
implemented, but we really should not make improvements which are
already supported by the watchdog core.
Thanks,
Guenter
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