diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2026-05-07 12:24:08 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2026-05-10 08:31:34 -0700 |
| commit | fafd036b80a7c85aa86763e70a1a608aa398a144 (patch) | |
| tree | 919c58153920c8f2da01824849656c3b1d4db219 /drivers/watchdog | |
| parent | 29d71b732bdc43f0c13a4e7258c007bf841a2d29 (diff) | |
watchdog: rzn1: remove now obsolete interrupt support
Previously, it was overlooked that the watchdog could reset the system
directly. So, a workaround using the interrupt which called
emergency_restart() was implemented. We now configure the controller
when booting properly to allow watchdog resets directly. Thus, remove
the interrupt workaround.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20260507102410.43384-4-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/rzn1_wdt.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/drivers/watchdog/rzn1_wdt.c b/drivers/watchdog/rzn1_wdt.c index 48d5afef62a5..4fdc5363ba98 100644 --- a/drivers/watchdog/rzn1_wdt.c +++ b/drivers/watchdog/rzn1_wdt.c @@ -79,14 +79,6 @@ static int rzn1_wdt_start(struct watchdog_device *w) return 0; } -static irqreturn_t rzn1_wdt_irq(int irq, void *_wdt) -{ - pr_crit("RZN1 Watchdog. Initiating system reboot\n"); - emergency_restart(); - - return IRQ_HANDLED; -} - static struct watchdog_info rzn1_wdt_info = { .identity = "RZ/N1 Watchdog", .options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING, @@ -101,12 +93,10 @@ static const struct watchdog_ops rzn1_wdt_ops = { static int rzn1_wdt_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; struct rzn1_watchdog *wdt; unsigned long clk_rate; struct clk *clk; int ret; - int irq; wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL); if (!wdt) @@ -116,15 +106,6 @@ static int rzn1_wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->base)) return PTR_ERR(wdt->base); - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; - - ret = devm_request_irq(dev, irq, rzn1_wdt_irq, 0, - np->name, wdt); - if (ret) - return dev_err_probe(dev, ret, "failed to request irq %d\n", irq); - clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(clk)) return dev_err_probe(dev, PTR_ERR(clk), "failed to get the clock\n"); |