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SubjectRe: [PATCH 1/1] staging/speakup/kobjects.c: Code improvement.
Raphael S. Carvalho, le Fri 21 Jun 2013 22:54:40 -0300, a écrit :
> 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 608), 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>

> ---
> drivers/staging/speakup/kobjects.c | 73 +++++++++++++++++++----------------
> 1 files changed, 40 insertions(+), 33 deletions(-)
>
> diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c
> index 943b6c1..4660ce3 100644
> --- a/drivers/staging/speakup/kobjects.c
> +++ b/drivers/staging/speakup/kobjects.c
> @@ -585,6 +585,25 @@ 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);
> - }
> - }
> - }
> + break;
> + }
> spk_unlock(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);
> --
> 1.7.2.5
>

--
Samuel
$ du temp.iso
2,0T temp.iso
$ ls temp.iso -l
-r-xr-xr-x 1 samy thibault 16E 2003-03-22 14:44 temp.iso*
-+- je vous dirai pas la marque de mon disque dur, na :p -+-
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