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[RFKILL]: Add support for hardware-only rfkill buttons

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Buttons that work directly on hardware cannot support
the "user_claim" functionality. Add a flag to signal
this and return -EOPNOTSUPP in this case.
b43 is such a device.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Buesch
2007-09-27 21:34:23 +02:00
committed by David S. Miller
parent 135900c182
commit 20405c0841
2 changed files with 9 additions and 1 deletions
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7
net/rfkill/rfkill.c
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@@ -190,6 +190,10 @@ static ssize_t rfkill_claim_store(struct device *dev,
if (error)
return error;
if (rfkill->user_claim_unsupported) {
error = -EOPNOTSUPP;
goto out_unlock;
}
if (rfkill->user_claim != claim) {
if (!claim)
rfkill_toggle_radio(rfkill,
@@ -197,9 +201,10 @@ static ssize_t rfkill_claim_store(struct device *dev,
rfkill->user_claim = claim;
}
out_unlock:
mutex_unlock(&rfkill_mutex);
return count;
return error ? error : count;
}
static struct device_attribute rfkill_dev_attrs[] = {