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ath9k: improve suspend/resume reliability

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Ensure that drv_start() always returns true, as a failing hw start usually
eventually leads to crashes when there's still a station entry present.
Call a power-on reset after a resume and after a hw reset failure to bring
the hardware back to life again.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
2012-10-03 21:07:51 +02:00
committed by John W. Linville
parent 93170516a4
commit ceb26a6013
4 changed files with 13 additions and 10 deletions
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4
drivers/net/wireless/ath/ath9k/pci.c
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@@ -326,7 +326,8 @@ static int ath_pci_resume(struct device *device)
struct pci_dev *pdev = to_pci_dev(device);
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
u32 val;
/*
@@ -339,6 +340,7 @@ static int ath_pci_resume(struct device *device)
pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
ath_pci_aspm_init(common);
ah->reset_power_on = false;
return 0;
}