[PATCH 1/3] watchdog: qcom-wdt: add option to skip pretimeout

[Ansuel Smith]

Some platform like ipq806x doesn't support pretimeout.
As the driver check if there are available interrupts and ipq806x
use msm-timer that require interrupts, the watchdog fail to probe
as request_irq tries to use a ppi interrupt. Add an option to skip
pretimeout setup and use the normal watchdog probe.

Signed-off-by: Ansuel Smith <ansuelsmth@xxxxxxxxx>
---
 drivers/watchdog/qcom-wdt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index a494543d3ae1..e689e97e883e 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -189,6 +189,7 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 	u32 percpu_offset;
 	int irq, ret;
 	struct clk *clk;
+	bool nopretimeout;
 
 	regs = of_device_get_match_data(dev);
 	if (!regs) {
@@ -204,6 +205,8 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENOMEM;
 
+	nopretimeout = of_property_read_bool(np, "no-pretimeout");
+
 	/* We use CPU0's DGT for the watchdog */
 	if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
 		percpu_offset = 0;
@@ -247,7 +250,7 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 
 	/* check if there is pretimeout support */
 	irq = platform_get_irq(pdev, 0);
-	if (irq > 0) {
+	if (!nopretimeout && irq > 0) {
 		ret = devm_request_irq(dev, irq, qcom_wdt_isr,
 				       IRQF_TRIGGER_RISING,
 				       "wdt_bark", &wdt->wdd);
-- 
2.24.0