staging/speakup/kobjects.c: Code improvement.

Well, there is no need to use strcmp since we can make a test of similar semantic by using the var_id field of param.
I moved the test into the VAR_NUM:VAR_TIME case since VAR_STRING will never be "voice".

spk_xlate isn't used anymore (in line 628), then there is no difference between using cp and buf in VAR_STRING case.
Besides, buf is a const char and those changes remove one uneeded line.

I created the function spk_reset_default_value because it clarifies the code and allows code reusing.

Signed-off-by: Raphael S.Carvalho <raphael.scarv@gmail.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c
index 51bdea3..61a3f7a 100644 (file)
--- a/drivers/staging/speakup/kobjects.c
+++ b/drivers/staging/speakup/kobjects.c
@@ -586,6 +586,25 @@ ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
 EXPORT_SYMBOL_GPL(spk_var_show);
 
 /*
+ * Used to reset either default_pitch or default_vol.
+ */
+static inline void spk_reset_default_value(char *header_name,
+                                       int *synth_default_value, int idx)
+{
+       struct st_var_header *param;
+
+       if (synth && synth_default_value) {
+               param = spk_var_header_by_name(header_name);
+               if (param)  {
+                       spk_set_num_var(synth_default_value[idx],
+                                       param, E_NEW_DEFAULT);
+                       spk_set_num_var(0, param, E_DEFAULT);
+                       pr_info("%s reset to default value\n", param->name);
+               }
+       }
+}
+
+/*
  * This function is called when a user echos a value to one of the
  * variable parameters.
  */
@@ -624,56 +643,44 @@ ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
                if (ret == -ERANGE) {
                        var_data = param->data;
                        pr_warn("value for %s out of range, expect %d to %d\n",
-                               attr->attr.name,
+                               param->name,
                                var_data->u.n.low, var_data->u.n.high);
                }
+
+              /*
+               * If voice was just changed, we might need to reset our default
+               * pitch and volume.
+               */
+               if (param->var_id == VOICE) {
+                       spk_reset_default_value("pitch", synth->default_pitch,
+                               value);
+                       spk_reset_default_value("vol", synth->default_vol,
+                               value);
+               }
                break;
        case VAR_STRING:
-               len = strlen(buf);
-               if ((len >= 1) && (buf[len - 1] == '\n'))
+               len = strlen(cp);
+               if ((len >= 1) && (cp[len - 1] == '\n'))
                        --len;
-               if ((len >= 2) && (buf[0] == '"') && (buf[len - 1] == '"')) {
-                       ++buf;
+               if ((len >= 2) && (cp[0] == '"') && (cp[len - 1] == '"')) {
+                       ++cp;
                        len -= 2;
                }
-               cp = (char *) buf;
                cp[len] = '\0';
-               ret = spk_set_string_var(buf, param, len);
+               ret = spk_set_string_var(cp, param, len);
                if (ret == -E2BIG)
                        pr_warn("value too long for %s\n",
-                                       attr->attr.name);
+                                       param->name);
                break;
        default:
                pr_warn("%s unknown type %d\n",
                        param->name, (int)param->var_type);
        break;
        }
-       /*
-        * If voice was just changed, we might need to reset our default
-        * pitch and volume.
-        */
-       if (strcmp(attr->attr.name, "voice") == 0) {
-               if (synth && synth->default_pitch) {
-                       param = spk_var_header_by_name("pitch");
-                       if (param)  {
-                               spk_set_num_var(synth->default_pitch[value],
-                                               param, E_NEW_DEFAULT);
-                               spk_set_num_var(0, param, E_DEFAULT);
-                       }
-               }
-               if (synth && synth->default_vol) {
-                       param = spk_var_header_by_name("vol");
-                       if (param)  {
-                               spk_set_num_var(synth->default_vol[value],
-                                               param, E_NEW_DEFAULT);
-                               spk_set_num_var(0, param, E_DEFAULT);
-                       }
-               }
-       }
        spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 
        if (ret == -ERESTART)
-               pr_info("%s reset to default value\n", attr->attr.name);
+               pr_info("%s reset to default value\n", param->name);
        return count;
 }
 EXPORT_SYMBOL_GPL(spk_var_store);