Commit 7282d2ae authored May 12, 2022 by Guenter Roeck

hwmon: (pwm-fan) Use HWMON_CHANNEL_INFO macro



The HWMON_CHANNEL_INFO macro simplifies the code, reduces the likelihood
of errors, and makes the code easier to read.

The conversion was done automatically with coccinelle. The semantic patch
used to make this change is as follows.

@s@
identifier i,j,ty;
@@

-struct hwmon_channel_info j = {
-       .type = ty,
-       .config = i,
-};

@r@
initializer list elements;
identifier s.i;
@@

-u32 i[] = {
-  elements,
-  0
-};

@script:ocaml t@
ty << s.ty;
elements << r.elements;
shorter;
elems;
@@

shorter :=
   make_ident (List.hd(List.rev (Str.split (Str.regexp "_") ty)));
elems :=
   make_ident
    (String.concat ","
     (List.map (fun x -> Printf.sprintf "\n\t\t\t   %s" x)
       (Str.split (Str.regexp " , ") elements)))

@@
identifier s.j,t.shorter;
identifier t.elems;
@@

- &j
+ HWMON_CHANNEL_INFO(shorter,elems)

This patch does not introduce functional changes. Many thanks to
Julia Lawall for providing the coccinelle script.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

parent 7c399d6a

drivers/hwmon/pwm-fan.c

+1 −11

Original line number	Diff line number	Diff line
		@@ -49,16 +49,6 @@ struct pwm_fan_ctx {
		struct hwmon_channel_info fan_channel;
		};

		static const u32 pwm_fan_channel_config_pwm[] = {
		HWMON_PWM_INPUT,
		0
		};

		static const struct hwmon_channel_info pwm_fan_channel_pwm = {
		.type = hwmon_pwm,
		.config = pwm_fan_channel_config_pwm,
		};

		/* This handler assumes self resetting edge triggered interrupt. */
		static irqreturn_t pulse_handler(int irq, void *dev_id)
		{
		@@ -387,7 +377,7 @@ static int pwm_fan_probe(struct platform_device *pdev)
		if (!channels)
		return -ENOMEM;

		channels[0] = &pwm_fan_channel_pwm;
		channels[0] = HWMON_CHANNEL_INFO(pwm, HWMON_PWM_INPUT);

		for (i = 0; i < ctx->tach_count; i++) {
		struct pwm_fan_tach *tach = &ctx->tachs[i];