On Wed, 2015-08-05 at 16:39 +0300, Heikki Krogerus wrote:
> Helper for finding the type based on name. Useful if the
> type needs to be determined based on device property.
>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> include/linux/rfkill.h | 15 +++++++++++++
> net/rfkill/core.c | 57 +++++++++++++++++++++++++---------------
> ----------
> 2 files changed, 44 insertions(+), 28 deletions(-)
>
> diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
> index d901078..02f563c 100644
> --- a/include/linux/rfkill.h
> +++ b/include/linux/rfkill.h
> @@ -212,6 +212,15 @@ void rfkill_set_states(struct rfkill *rfkill,
> bool sw, bool hw);
> * @rfkill: rfkill struct to query
> */
> bool rfkill_blocked(struct rfkill *rfkill);
> +
> +/**
> + * rfkill_find_type - Helpper for finding rfkill type by name
> + * @name: the name of the type
> + *
> + * Returns enum rfkill_type that conrresponds the name.
> + */
> +enum rfkill_type rfkill_find_type(const char *name);
> +
> #else /* !RFKILL */
> static inline struct rfkill * __must_check
> rfkill_alloc(const char *name,
> @@ -268,6 +277,12 @@ static inline bool rfkill_blocked(struct rfkill
> *rfkill)
> {
> return false;
> }
> +
> +static inline enum rfkill_type rfkill_find_type(const char *name)
> +{
> + return 0;
Hmm… Besides 0 is implicitly casted to enum type the issue with enums
that you rather have to supply existing enum entry. I would suggest to
add RFKILL_TYPE_UNKNOWN if _ALL is reserved for some use cases.
> +}
> +
> #endif /* RFKILL || RFKILL_MODULE */
>
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index f12149a..53d7a97e 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -574,6 +574,33 @@ void rfkill_set_states(struct rfkill *rfkill,
> bool sw, bool hw)
> }
> EXPORT_SYMBOL(rfkill_set_states);
>
> +static const char *rfkill_types[NUM_RFKILL_TYPES] = {
> + [RFKILL_TYPE_WLAN] = "wlan",
> + [RFKILL_TYPE_BLUETOOTH] = "bluetooth",
> + [RFKILL_TYPE_UWB] = "ultrawideband",
> + [RFKILL_TYPE_WIMAX] = "wimax",
> + [RFKILL_TYPE_WWAN] = "wwan",
> + [RFKILL_TYPE_GPS] = "gps",
> + [RFKILL_TYPE_FM] = "fm",
> + [RFKILL_TYPE_NFC] = "nfc",
> +};
> +
> +enum rfkill_type rfkill_find_type(const char *name)
> +{
> + int i;
> +
> + BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_NFC + 1);
> +
> + if (!name)
> + return RFKILL_TYPE_ALL;
> +
> + for (i = 1; i < NUM_RFKILL_TYPES; i++)
> + if (!strcmp(name, rfkill_types[i]))
> + return i;
> + return RFKILL_TYPE_ALL;
> +}
> +EXPORT_SYMBOL(rfkill_find_type);
> +
> static ssize_t name_show(struct device *dev, struct device_attribute
> *attr,
> char *buf)
> {
> @@ -583,38 +610,12 @@ static ssize_t name_show(struct device *dev,
> struct device_attribute *attr,
> }
> static DEVICE_ATTR_RO(name);
>
> -static const char *rfkill_get_type_str(enum rfkill_type type)
> -{
> - BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_NFC + 1);
> -
> - switch (type) {
> - case RFKILL_TYPE_WLAN:
> - return "wlan";
> - case RFKILL_TYPE_BLUETOOTH:
> - return "bluetooth";
> - case RFKILL_TYPE_UWB:
> - return "ultrawideband";
> - case RFKILL_TYPE_WIMAX:
> - return "wimax";
> - case RFKILL_TYPE_WWAN:
> - return "wwan";
> - case RFKILL_TYPE_GPS:
> - return "gps";
> - case RFKILL_TYPE_FM:
> - return "fm";
> - case RFKILL_TYPE_NFC:
> - return "nfc";
> - default:
> - BUG();
> - }
> -}
> -
> static ssize_t type_show(struct device *dev, struct device_attribute
> *attr,
> char *buf)
> {
> struct rfkill *rfkill = to_rfkill(dev);
>
> - return sprintf(buf, "%s\n", rfkill_get_type_str(rfkill
> ->type));
> + return sprintf(buf, "%s\n", rfkill_types[rfkill->type]);
> }
> static DEVICE_ATTR_RO(type);
>
> @@ -760,7 +761,7 @@ static int rfkill_dev_uevent(struct device *dev,
> struct kobj_uevent_env *env)
> if (error)
> return error;
> error = add_uevent_var(env, "RFKILL_TYPE=%s",
> - rfkill_get_type_str(rfkill->type));
> + rfkill_types[rfkill->type]);
> if (error)
> return error;
> spin_lock_irqsave(&rfkill->lock, flags);
--
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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