staging: speakup: use native error codes

The mapping as follows:
	E_RANGE		-> ERANGE
	E_UNDEF		-> ENODATA
	E_TOOLONG	-> E2BIG
	SET_DEFAULT	-> ERESTART

As a side effect it fixes a bug in spk_var_store() where return code was
mistakenly compared to negative value instead of positive.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.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 d0f660b..d6d9264 100644 (file)
--- a/drivers/staging/speakup/kobjects.c
+++ b/drivers/staging/speakup/kobjects.c
@@ -619,7 +619,7 @@ ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
                        len = E_SET;
                value = simple_strtol(cp, NULL, 10);
                ret = spk_set_num_var(value, param, len);
-               if (ret == E_RANGE) {
+               if (ret == -ERANGE) {
                        var_data = param->data;
                        pr_warn("value for %s out of range, expect %d to %d\n",
                                attr->attr.name,
@@ -637,7 +637,7 @@ ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
                cp = (char *) buf;
                cp[len] = '\0';
                ret = spk_set_string_var(buf, param, len);
-               if (ret == E_TOOLONG)
+               if (ret == -E2BIG)
                        pr_warn("value too long for %s\n",
                                        attr->attr.name);
                break;
@@ -670,7 +670,7 @@ ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
        }
        spk_unlock(flags);
 
-       if (ret == SET_DEFAULT)
+       if (ret == -ERESTART)
                pr_info("%s reset to default value\n", attr->attr.name);
        return count;
 }

diff --git a/drivers/staging/speakup/speakup.h b/drivers/staging/speakup/speakup.h
index 1e5691c..c387a02 100644 (file)
--- a/drivers/staging/speakup/speakup.h
+++ b/drivers/staging/speakup/speakup.h
@@ -44,11 +44,6 @@
 #define IS_CHAR(x, type) (spk_chartab[((u_char)x)]&type)
 #define IS_TYPE(x, type) ((spk_chartab[((u_char)x)]&type) == type)
 
-#define SET_DEFAULT -4
-#define E_RANGE -3
-#define E_TOOLONG -2
-#define E_UNDEF -1
-
 extern int speakup_thread(void *data);
 extern void spk_reset_default_chars(void);
 extern void spk_reset_default_chartab(void);

diff --git a/drivers/staging/speakup/varhandlers.c b/drivers/staging/speakup/varhandlers.c
index 0a237da..be61a4e 100644 (file)
--- a/drivers/staging/speakup/varhandlers.c
+++ b/drivers/staging/speakup/varhandlers.c
@@ -184,19 +184,19 @@ int spk_set_num_var(int input, struct st_var_header *var, int how)
        char buf[32];
        char *cp;
        struct var_t *var_data = var->data;
+
        if (var_data == NULL)
-               return E_UNDEF;
+               return -ENODATA;
 
        if (how == E_NEW_DEFAULT) {
                if (input < var_data->u.n.low || input > var_data->u.n.high)
-                       ret = E_RANGE;
-               else
-                       var_data->u.n.default_val = input;
-               return ret;
+                       return -ERANGE;
+               var_data->u.n.default_val = input;
+               return 0;
        }
        if (how == E_DEFAULT) {
                val = var_data->u.n.default_val;
-               ret = SET_DEFAULT;
+               ret = -ERESTART;
        } else {
                if (how == E_SET)
                        val = input;
@@ -207,7 +207,7 @@ int spk_set_num_var(int input, struct st_var_header *var, int how)
                else if (how == E_DEC)
                        val -= input;
                if (val < var_data->u.n.low || val > var_data->u.n.high)
-                       return E_RANGE;
+                       return -ERANGE;
        }
        var_data->u.n.value = val;
        if (var->var_type == VAR_TIME && p_val != NULL) {
@@ -246,25 +246,25 @@ int spk_set_num_var(int input, struct st_var_header *var, int how)
 
 int spk_set_string_var(const char *page, struct st_var_header *var, int len)
 {
-       int ret = 0;
        struct var_t *var_data = var->data;
+
        if (var_data == NULL)
-               return E_UNDEF;
+               return -ENODATA;
        if (len > MAXVARLEN)
-               return -E_TOOLONG;
+               return -E2BIG;
        if (!len) {
                if (!var_data->u.s.default_val)
                        return 0;
-               ret = SET_DEFAULT;
                if (!var->p_val)
                        var->p_val = var_data->u.s.default_val;
                if (var->p_val != var_data->u.s.default_val)
                        strcpy((char *)var->p_val, var_data->u.s.default_val);
+               return -ERESTART;
        } else if (var->p_val)
                strcpy((char *)var->p_val, page);
        else
-               return -E_TOOLONG;
-       return ret;
+               return -E2BIG;
+       return 0;
 }
 
 /* spk_set_mask_bits sets or clears the punc/delim/repeat bits,