Hi, With the following patch instead of mine: brcm80211: fmac: register a dummy irq handler for SDIO function 2 it still fails the same way. I added that: #define BCMDBG 1 after: #include "dhd_proto.h" #include "dhd_dbg.h" in: drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c and: insmod brcmfmac.ko brcmf_msg_level=8192 But it wasn't more verbose so I added MMC debug and I got that: [ 101.531001] mmc2: starting CMD52 arg 00205000 flags 00000195 [ 101.531149] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.531232] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.531381] mmc2: starting CMD52 arg 00205200 flags 00000195 [ 101.531468] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.531615] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.531701] mmc2: starting CMD52 arg 00205400 flags 00000195 [ 101.531851] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.531934] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.532084] mmc2: starting CMD52 arg 00205600 flags 00000195 [ 101.533235] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.533321] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.533473] mmc2: starting CMD52 arg 00205800 flags 00000195 [ 101.533560] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.533707] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.533794] mmc2: starting CMD52 arg 00205a00 flags 00000195 [ 101.533944] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.534027] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.534177] mmc2: starting CMD52 arg 00205c00 flags 00000195 [ 101.534327] sdhci [sdhci_irq()]: *** mmc2 got interrupt: 0x00000001 [ 101.534411] mmc2: req done (CMD52): 0: 00001000 00000000 00000000 00000000 [ 101.534562] mmc2: starting CMD52 arg 00205e00 flags 00000195 --- Then it blocks here --- Denis. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html