hwmon: (jc42) Use HWMON_CHANNEL_INFO macro
authorGuenter Roeck <linux@roeck-us.net>
Sun, 31 Mar 2019 17:53:47 +0000 (10:53 -0700)
committerGuenter Roeck <linux@roeck-us.net>
Tue, 16 Apr 2019 00:19:53 +0000 (17:19 -0700)
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.

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

-u32 i[] = {
-  elements,
-  0
-};

@s@
identifier r.i,j,ty;
@@

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

@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 semantic patch.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/jc42.c

index 4fa482a..6b57a6d 100644 (file)
@@ -451,20 +451,12 @@ static int jc42_detect(struct i2c_client *client, struct i2c_board_info *info)
        return -ENODEV;
 }
 
-static const u32 jc42_temp_config[] = {
-       HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | HWMON_T_CRIT |
-       HWMON_T_MAX_HYST | HWMON_T_CRIT_HYST |
-       HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM,
-       0
-};
-
-static const struct hwmon_channel_info jc42_temp = {
-       .type = hwmon_temp,
-       .config = jc42_temp_config,
-};
-
 static const struct hwmon_channel_info *jc42_info[] = {
-       &jc42_temp,
+       HWMON_CHANNEL_INFO(temp,
+                          HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+                          HWMON_T_CRIT | HWMON_T_MAX_HYST |
+                          HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM |
+                          HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM),
        NULL
 };