watchdog: sa1100: Fix PTR_ERR_OR_ZERO() vs NULL check in sa1100dog_probe()

devm_ioremap() doesn't return error pointers, it returns NULL on error.
Update the check accordingly.

Fixes: e86bd43bcfc5 ("watchdog: sa1100: use platform device registration")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240426075808.1582678-1-nichen@iscas.ac.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/sa1100_wdt.c b/drivers/watchdog/sa1100_wdt.c
index 5d2df008b92a5c88da6c115b99fb60707c851450..34a917221e316f2d8d37db07acdfd7a8fc66e000 100644 (file)
--- a/drivers/watchdog/sa1100_wdt.c
+++ b/drivers/watchdog/sa1100_wdt.c
@@ -191,9 +191,8 @@ static int sa1100dog_probe(struct platform_device *pdev)
        if (!res)
                return -ENXIO;
        reg_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
-       ret = PTR_ERR_OR_ZERO(reg_base);
-       if (ret)
-               return ret;
+       if (!reg_base)
+               return -ENOMEM;
 
        clk = clk_get(NULL, "OSTIMER0");
        if (IS_ERR(clk)) {