From: Luis R. Rodriguez Date: Tue, 14 Apr 2009 01:41:46 +0000 (-0400) Subject: ath9k: Fix bug when using a card with a busted EEPROM X-Git-Tag: v2.6.30.1~45 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4f6846f57b43350f92e78cff835250f600b0a6f9;p=karo-tx-linux.git ath9k: Fix bug when using a card with a busted EEPROM backport of commit 85efc86eb7c6cbb1c8ce8d99b10b948be033fbb9 upstream. We fail if your EEPROM is busted but we were never propagated the error back so such users could end up with a cryptic oops message like: IP: [] ath9k_reg_apply_world_flags+0x29/0x130 [ath9k] *pde = 00000000 Oops: 0000 [#1] SMP Modules linked in: ath9k(+) mac80211 cfg80211 Pid: 4284, comm: insmod Not tainted (2.6.29-wl #3) 7660A14 EIP: 0060:[] EFLAGS: 00010286 CPU: 1 EIP is at ath9k_reg_apply_world_flags+0x29/0x130 [ath9k] Fix this by propagating the error and also lets not leave the user in the dark and communicate what's going on. When this happens you will now see this: ath9k 0000:16:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 ath9k: Invalid EEPROM contents Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 13d4e6756c99..12363655d237 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1416,7 +1416,8 @@ static int ath_init(u16 devid, struct ath_softc *sc) for (i = 0; i < sc->keymax; i++) ath9k_hw_keyreset(ah, (u16) i); - if (ath9k_regd_init(sc->sc_ah)) + error = ath9k_regd_init(sc->sc_ah); + if (error) goto bad; /* default to MONITOR mode */ diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c index 4ca625102291..5256d2460dab 100644 --- a/drivers/net/wireless/ath9k/regd.c +++ b/drivers/net/wireless/ath9k/regd.c @@ -439,7 +439,7 @@ int ath9k_regd_init(struct ath_hw *ah) u16 regdmn; if (!ath9k_regd_is_eeprom_valid(ah)) { - DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY, + DPRINTF(ah->ah_sc, ATH_DBG_FATAL, "Invalid EEPROM contents\n"); return -EINVAL; }