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madwifi: if a txpower value below the poweroffset is requested, set the internal txpower to 0db

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SVN-Revision: 16234
This commit is contained in:
Felix Fietkau 2009-05-31 14:45:04 +00:00
parent 7328490dea
commit 5836e0fb5f
1 changed files with 16 additions and 0 deletions
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16
package/madwifi/patches/438-poweroffset_sysctl.patch
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@ -1,5 +1,21 @@
--- a/ath/if_ath.c --- a/ath/if_ath.c
+++ b/ath/if_ath.c +++ b/ath/if_ath.c
@@ -10474,11 +10474,11 @@ set_node_txpower(void *arg, struct ieee8
* XXX: this function needs some locking to avoid being called
* twice/interrupted. Returns the value actually stored. */
static u_int32_t
-ath_set_clamped_maxtxpower(struct ath_softc *sc,
- u_int32_t new_clamped_maxtxpower)
+ath_set_clamped_maxtxpower(struct ath_softc *sc, u_int32_t new_txpwr)
{
- new_clamped_maxtxpower -= sc->sc_poweroffset;
- (void)ath_hal_settxpowlimit(sc->sc_ah, new_clamped_maxtxpower);
+ new_txpwr = ((new_txpwr < sc->sc_poweroffset) ? 0 :
+ new_txpwr - sc->sc_poweroffset);
+ (void)ath_hal_settxpowlimit(sc->sc_ah, new_txpwr);
return ath_get_clamped_maxtxpower(sc);
}
@@ -11029,6 +11029,7 @@ enum { @@ -11029,6 +11029,7 @@ enum {
ATH_DEBUG, ATH_DEBUG,
ATH_TXANTENNA, ATH_TXANTENNA,