On 10/22/19 2:44 AM, Arnd Bergmann wrote:

On Sat, Oct 19, 2019 at 4:07 PM Guenter Roeck [off-list ref] wrote:

quoted

quoted

@@ -319,10 +316,13 @@ static struct platform_device *sa11x0_devices[] __initdata = {

   static int __init sa1100_init(void)
   {
+     struct resource wdt_res = DEFINE_RES_MEM(0x90000000, 0x20);
       pm_power_off = sa1100_power_off;

       regulator_has_full_constraints();

+     platform_device_register_simple("sa1100_wdt", -1, &wdt_res, 1);
+
       return platform_add_devices(sa11x0_devices, ARRAY_SIZE(sa11x0_devices));

Wouldn't it be better to add the watchdog device to sa11x0_devices ?

Generally speaking, platform_device_register_simple() is better than
platform_add_devices(), it does the same thing with fewer source lines
and smaller object code, and it doesn't have the problem of lifetime rules
for statically allocated reference-counted devices.

One day we may want to replace all static platform_device instances with
platform_device_info instead, but right now there are too many of those.

I can change this one to a platform_device for consistency though if you
think it's worth it.

No, I was just wondering. Thanks for the explanation.

Guenter


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