Hi,
first of all: great! b43 sdio card works with open firmware!
However, on "rmmod b43" I get the following backtraces
with current Linus git (v2.6.36-6794-g12ba8d1):
[ 831.696189] b43-phy1 debug: Removing Interface type 2
[ 831.698425] b43-phy1 debug: Wireless interface stopped
[ 851.560519] ------------[ cut here ]------------
[ 851.560531] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
[ 851.560534] Hardware name: 20552PG
[ 851.560536] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
[ 851.560620] Pid: 2504, comm: rmmod Not tainted 2.6.36-titan0+ #1
[ 851.560622] Call Trace:
[ 851.560631] [<c014a102>] warn_slowpath_common+0x72/0xa0
[ 851.560636] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
[ 851.560641] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
[ 851.560645] [<c014a152>] warn_slowpath_null+0x22/0x30
[ 851.560649] [<c04d94c8>] mmc_wait_for_cmd+0x88/0x90
[ 851.560655] [<c0401585>] ? device_release+0x25/0x80
[ 851.560660] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
[ 851.560665] [<c04df370>] mmc_io_rw_direct+0x30/0x40
[ 851.560669] [<c04e06e7>] sdio_disable_func+0x37/0xa0
[ 851.560683] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
[ 851.560687] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
[ 851.560692] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
[ 851.560697] [<c0404991>] __device_release_driver+0x51/0xb0
[ 851.560701] [<c0404a7f>] driver_detach+0x8f/0xa0
[ 851.560705] [<c0403c83>] bus_remove_driver+0x63/0xa0
[ 851.560709] [<c0405039>] driver_unregister+0x49/0x80
[ 851.560713] [<c0405039>] ? driver_unregister+0x49/0x80
[ 851.560718] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
[ 851.560727] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
[ 851.560734] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
[ 851.560740] [<c017fb8d>] sys_delete_module+0x13d/0x200
[ 851.560747] [<c01fd7d2>] ? do_munmap+0x212/0x300
[ 851.560752] [<c010311f>] sysenter_do_call+0x12/0x28
[ 851.560757] ---[ end trace 31e14488072d2f7d ]---
[ 851.560759] ------------[ cut here ]------------
[ 851.560764] WARNING: at drivers/mmc/core/core.c:164 mmc_wait_for_req+0xea/0x100()
[ 851.560767] Hardware name: 20552PG
[ 851.560769] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
[ 851.560848] Pid: 2504, comm: rmmod Tainted: G W 2.6.36-titan0+ #1
[ 851.560850] Call Trace:
[ 851.560855] [<c014a102>] warn_slowpath_common+0x72/0xa0
[ 851.560860] [<c04d942a>] ? mmc_wait_for_req+0xea/0x100
[ 851.560865] [<c04d942a>] ? mmc_wait_for_req+0xea/0x100
[ 851.560869] [<c014a152>] warn_slowpath_null+0x22/0x30
[ 851.560873] [<c04d942a>] mmc_wait_for_req+0xea/0x100
[ 851.560878] [<c04d94ac>] mmc_wait_for_cmd+0x6c/0x90
[ 851.560882] [<c04d99d0>] ? mmc_wait_done+0x0/0x20
[ 851.560886] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
[ 851.560891] [<c04df370>] mmc_io_rw_direct+0x30/0x40
[ 851.560895] [<c04e06e7>] sdio_disable_func+0x37/0xa0
[ 851.560906] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
[ 851.560910] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
[ 851.560914] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
[ 851.560920] [<c0404991>] __device_release_driver+0x51/0xb0
[ 851.560924] [<c0404a7f>] driver_detach+0x8f/0xa0
[ 851.560928] [<c0403c83>] bus_remove_driver+0x63/0xa0
[ 851.560932] [<c0405039>] driver_unregister+0x49/0x80
[ 851.560937] [<c0405039>] ? driver_unregister+0x49/0x80
[ 851.560941] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
[ 851.560950] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
[ 851.560957] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
[ 851.560962] [<c017fb8d>] sys_delete_module+0x13d/0x200
[ 851.560968] [<c01fd7d2>] ? do_munmap+0x212/0x300
[ 851.560972] [<c010311f>] sysenter_do_call+0x12/0x28
[ 851.560976] ---[ end trace 31e14488072d2f7e ]---
[ 851.561027] ------------[ cut here ]------------
[ 851.561035] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
[ 851.561038] Hardware name: 20552PG
[ 851.561040] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
[ 851.561115] Pid: 2504, comm: rmmod Tainted: G W 2.6.36-titan0+ #1
[ 851.561118] Call Trace:
[ 851.561123] [<c014a102>] warn_slowpath_common+0x72/0xa0
[ 851.561128] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
[ 851.561132] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
[ 851.561136] [<c014a152>] warn_slowpath_null+0x22/0x30
[ 851.561140] [<c04d94c8>] mmc_wait_for_cmd+0x88/0x90
[ 851.561145] [<c04d99d0>] ? mmc_wait_done+0x0/0x20
[ 851.561149] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
[ 851.561153] [<c0[ 851.561157] [<c04e0722>] sdio_disable_func+0x72/0xa0
[ 851.561167] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
[ 851.561171] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
[ 851.561175] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
[ 851.561180] [<c0404991>] __device_release_driver+0x51/0xb0
[ 851.561184] [<c0404a7f>] driver_detach+0x8f/0xa0
[ 851.561188] [<c0403c83>] bus_remove_driver+0x63/0xa0
[ 851.561193] [<c0405039>] driver_unregister+0x49/0x80
[ 851.561197] [<c0405039>] ? driver_unregister+0x49/0x80
[ 851.561201] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
[ 851.561209] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
[ 851.561217] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
[ 851.561221] [<c017fb8d>] sys_delete_module+0x13d/0x200
[ 851.561226] [<c01fd7d2>] ? do_munmap+0x212/0x300
[ 851.561231] [<c010311f>] sysenter_do_call+0x12/0x28
[ 851.561234] ---[ end trace 31e14488072d2f7f ]---
[ 851.561236] ------------[ cut here ]------------
[ 851.561240] WARNING: at drivers/mmc/core/core.c:164 mmc_wait_for_req+0xea/0x100()
[ 851.561243] Hardware name: 20552PG
[ 851.561245] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
[ 851.561317] Pid: 2504, comm: rmmod Tainted: G W 2.6.36-titan0+ #1
[ 851.561320] Call Trace:
[ 851.561324] [<c014a102>] warn_slowpath_common+0x72/0xa0
[ 851.561329] [<c04d942a>] ? mmc_wait_for_req+0xea/0x100
[ 851.561333] [<c04d942a>] ? mmc_wait_for_req+0xea/0x100
[ 851.561338] [<c014a152>] warn_slowpath_null+0x22/0x30
[ 851.561342] [<c04d942a>] mmc_wait_for_req+0xea/0x100
[ 851.561346] [<c04d94ac>] mmc_wait_for_cmd+0x6c/0x90
[ 851.561351] [<c04d99d0>] ? mmc_wait_done+0x0/0x20
[ 851.561355] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
[ 851.561359] [<c04df370>] mmc_io_rw_direct+0x30/0x40
[ 851.561363] [<c04e0722>] sdio_disable_func+0x72/0xa0
[ 851.561372] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
[ 851.561377] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
[ 851.561381] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
[ 851.561385] [<c0404991>] __device_release_driver+0x51/0xb0
[ 851.561390] [<c0404a7f>] driver_detach+0x8f/0xa0
[ 851.561394] [<c0403c83>] bus_remove_driver+0x63/0xa0
[ 851.561398] [<c0405039>] driver_unregister+0x49/0x80
[ 851.561402] [<c0405039>] ? driver_unregister+0x49/0x80
[ 851.561406] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
[ 851.561415] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
[ 851.561422] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
[ 851.561426] [<c017fb8d>] sys_delete_module+0x13d/0x200
[ 851.561431] [<c01fd7d2>] ? do_munmap+0x212/0x300
[ 851.561435] [<c010311f>] sysenter_do_call+0x12/0x28
4df370>] mmc_io_rw_direct+0x30/0x40
[ 851.561234] ---[ end trace 31e14488072d2f7f ]---
[ 851.561236] ------------[ cut here ]------------
[ 851.561240] WARNING: at drivers/mmc/core/core.c:164 mmc_wait_for_req+0xea/0x100()
[ 851.561243] Hardware name: 20552PG
[ 851.561245] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
[ 851.561317] Pid: 2504, comm: rmmod Tainted: G W 2.6.36-titan0+ #1
[ 851.561320] Call Trace:
[ 851.561324] [<c014a102>] warn_slowpath_common+0x72/0xa0
[ 851.561329] [<c04d942a>] ? mmc_wait_for_req+0xea/0x100
[ 851.561333] [<c04d942a>] ? mmc_wait_for_req+0xea/0x100
[ 851.561338] [<c014a152>] warn_slowpath_null+0x22/0x30
[ 851.561342] [<c04d942a>] mmc_wait_for_req+0xea/0x100
[ 851.561346] [<c04d94ac>] mmc_wait_for_cmd+0x6c/0x90
[ 851.561351] [<c04d99d0>] ? mmc_wait_done+0x0/0x20
[ 851.561355] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
[ 851.561359] [<c04df370>] mmc_io_rw_direct+0x30/0x40
[ 851.561363] [<c04e0722>] sdio_disable_func+0x72/0xa0
[ 851.561372] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
[ 851.561377] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
[ 851.561381] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
[ 851.561385] [<c0404991>] __device_release_driver+0x51/0xb0
[ 851.561390] [<c0404a7f>] driver_detach+0x8f/0xa0
[ 851.561394] [<c0403c83>] bus_remove_driver+0x63/0xa0
[ 851.561398] [<c0405039>] driver_unregister+0x49/0x80
[ 851.561402] [<c0405039>] ? driver_unregister+0x49/0x80
[ 851.561406] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
[ 851.561415] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
[ 851.561422] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
[ 851.561426] [<c017fb8d>] sys_delete_module+0x13d/0x200
[ 851.561431] [<c01fd7d2>] ? do_munmap+0x212/0x300
[ 851.561435] [<c010311f>] sysenter_do_call+0x12/0x28
[ 851.561438] ---[ end trace 31e14488072d2f80 ]---
Regards,
Arnd
On 10/27/2010 01:52 PM, Arnd Hannemann wrote:
> Hi,
>
> first of all: great! b43 sdio card works with open firmware!
>
> However, on "rmmod b43" I get the following backtraces
> with current Linus git (v2.6.36-6794-g12ba8d1):
>
>
> [ 831.696189] b43-phy1 debug: Removing Interface type 2
> [ 831.698425] b43-phy1 debug: Wireless interface stopped
> [ 851.560519] ------------[ cut here ]------------
> [ 851.560531] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
> [ 851.560534] Hardware name: 20552PG
> [ 851.560536] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
> [ 851.560620] Pid: 2504, comm: rmmod Not tainted 2.6.36-titan0+ #1
> [ 851.560622] Call Trace:
> [ 851.560631] [<c014a102>] warn_slowpath_common+0x72/0xa0
> [ 851.560636] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
> [ 851.560641] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
> [ 851.560645] [<c014a152>] warn_slowpath_null+0x22/0x30
> [ 851.560649] [<c04d94c8>] mmc_wait_for_cmd+0x88/0x90
> [ 851.560655] [<c0401585>] ? device_release+0x25/0x80
> [ 851.560660] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
> [ 851.560665] [<c04df370>] mmc_io_rw_direct+0x30/0x40
> [ 851.560669] [<c04e06e7>] sdio_disable_func+0x37/0xa0
> [ 851.560683] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
> [ 851.560687] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
> [ 851.560692] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
> [ 851.560697] [<c0404991>] __device_release_driver+0x51/0xb0
> [ 851.560701] [<c0404a7f>] driver_detach+0x8f/0xa0
> [ 851.560705] [<c0403c83>] bus_remove_driver+0x63/0xa0
> [ 851.560709] [<c0405039>] driver_unregister+0x49/0x80
> [ 851.560713] [<c0405039>] ? driver_unregister+0x49/0x80
> [ 851.560718] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
> [ 851.560727] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
> [ 851.560734] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
> [ 851.560740] [<c017fb8d>] sys_delete_module+0x13d/0x200
> [ 851.560747] [<c01fd7d2>] ? do_munmap+0x212/0x300
> [ 851.560752] [<c010311f>] sysenter_do_call+0x12/0x28
> [ 851.560757] ---[ end trace 31e14488072d2f7d ]---
> [ 851.560759] ------------[ cut here ]------------
I'm not an expert on the sdio interface, but I'll take a crack at this.
The first WARN_ON comes because the host has not been claimed. Please try the
following patch so that we know if it is claimed when b43_sdio_remove() is
entered and ssb_unregister_bus() clears it, or it has not been claimed when the
routine is entered. If the latter, we will likely need to surround the
sdio_disable_func() calls with sdio_claim_host()...sdio_remove_host() statements.
Larry
---
Index: wireless-testing/drivers/net/wireless/b43/sdio.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/sdio.c
+++ wireless-testing/drivers/net/wireless/b43/sdio.c
@@ -18,6 +18,7 @@
#include <linux/mmc/sdio_ids.h>
#include <linux/slab.h>
#include <linux/ssb/ssb.h>
+#include <linux/mmc/host.h>
#include "sdio.h"
#include "b43.h"
@@ -174,7 +175,11 @@ static void b43_sdio_remove(struct sdio_
{
struct b43_sdio *sdio = sdio_get_drvdata(func);
+ printk(KERN_INFO "b43-sdio: before ssb_bus_unregister, claimed is %d\n",
+ func->card->host->claimed);
ssb_bus_unregister(&sdio->ssb);
+ printk(KERN_INFO "b43-sdio: before sdio_disable_func, claimed is %d\n",
+ func->card->host->claimed);
sdio_disable_func(func);
kfree(sdio);
sdio_set_drvdata(func, NULL);
Hi,
Am 28.10.2010 16:49, schrieb Larry Finger:
> On 10/28/2010 09:28 AM, Arnd Hannemann wrote:
>> Hi,
> \> [ 1364.620044] b43-phy1 debug: Removing Interface type 2
>> [ 1364.621812] b43-phy1 debug: Wireless interface stopped
>> [ 1372.440297] b43-sdio: before ssb_bus_unregister, claimed is 0
>> [ 1372.440345] b43-sdio: before sdio_disable_func, claimed is 0
>> [ 1372.440351] ------------[ cut here ]------------
>> [ 1372.440367] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
>
> Please try the patch below. It claims the device before the sdio_disable_func(()
> call and releases it afterwords.
>
> Index: wireless-testing/drivers/net/wireless/b43/sdio.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/b43/sdio.c
> +++ wireless-testing/drivers/net/wireless/b43/sdio.c
> @@ -175,7 +175,9 @@ static void b43_sdio_remove(struct sdio_
> struct b43_sdio *sdio = sdio_get_drvdata(func);
>
> ssb_bus_unregister(&sdio->ssb);
> + sdio_claim_host(func);
> sdio_disable_func(func);
> + sdio_release_host(func);
> kfree(sdio);
> sdio_set_drvdata(func, NULL);
> }
>
Thanks, that fixes the warning.
Regards
Arnd
On 10/28/2010 09:28 AM, Arnd Hannemann wrote:
> Hi,
\> [ 1364.620044] b43-phy1 debug: Removing Interface type 2
> [ 1364.621812] b43-phy1 debug: Wireless interface stopped
> [ 1372.440297] b43-sdio: before ssb_bus_unregister, claimed is 0
> [ 1372.440345] b43-sdio: before sdio_disable_func, claimed is 0
> [ 1372.440351] ------------[ cut here ]------------
> [ 1372.440367] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
Please try the patch below. It claims the device before the sdio_disable_func(()
call and releases it afterwords.
Larry
Index: wireless-testing/drivers/net/wireless/b43/sdio.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/sdio.c
+++ wireless-testing/drivers/net/wireless/b43/sdio.c
@@ -175,7 +175,9 @@ static void b43_sdio_remove(struct sdio_
struct b43_sdio *sdio = sdio_get_drvdata(func);
ssb_bus_unregister(&sdio->ssb);
+ sdio_claim_host(func);
sdio_disable_func(func);
+ sdio_release_host(func);
kfree(sdio);
sdio_set_drvdata(func, NULL);
}
Hi,
Am 28.10.2010 02:58, schrieb Larry Finger:
> On 10/27/2010 01:52 PM, Arnd Hannemann wrote:
>> first of all: great! b43 sdio card works with open firmware!
>>
>> However, on "rmmod b43" I get the following backtraces
>> with current Linus git (v2.6.36-6794-g12ba8d1):
>>
>>
>> [ 831.696189] b43-phy1 debug: Removing Interface type 2
>> [ 831.698425] b43-phy1 debug: Wireless interface stopped
>> [ 851.560519] ------------[ cut here ]------------
>> [ 851.560531] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
>> [ 851.560534] Hardware name: 20552PG
>> [ 851.560536] Modules linked in: b43(-) ssb mmc_block binfmt_misc rfcomm sco bnep ppdev l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm arc4 iwlagn snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlcore snd_hwdep snd_pcm thinkpad_acpi mac80211 snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq r852 joydev snd_timer sm_common pcmcia nand snd_seq_device cfg80211 sdhci_pci btusb psmouse tpm_tis yenta_socket nand_ids lp snd pcmcia_rsrc nand_ecc bluetooth sdhci tpm pcmcia_core parport mtd snd_page_alloc serio_raw tpm_bios soundcore nvram led_class sha256_generic aes_i586 aes_generic dm_crypt i915 drm_kms_helper drm ahci intel_agp i2c_algo_bit intel_gtt e1000e libahci video agpgart output
>> [ 851.560620] Pid: 2504, comm: rmmod Not tainted 2.6.36-titan0+ #1
>> [ 851.560622] Call Trace:
>> [ 851.560631] [<c014a102>] warn_slowpath_common+0x72/0xa0
>> [ 851.560636] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
>> [ 851.560641] [<c04d94c8>] ? mmc_wait_for_cmd+0x88/0x90
>> [ 851.560645] [<c014a152>] warn_slowpath_null+0x22/0x30
>> [ 851.560649] [<c04d94c8>] mmc_wait_for_cmd+0x88/0x90
>> [ 851.560655] [<c0401585>] ? device_release+0x25/0x80
>> [ 851.560660] [<c04df210>] mmc_io_rw_direct_host+0xa0/0x150
>> [ 851.560665] [<c04df370>] mmc_io_rw_direct+0x30/0x40
>> [ 851.560669] [<c04e06e7>] sdio_disable_func+0x37/0xa0
>> [ 851.560683] [<f8dfcb80>] b43_sdio_remove+0x30/0x50 [b43]
>> [ 851.560687] [<c04df8cc>] sdio_bus_remove+0x1c/0x60
>> [ 851.560692] [<c016d39f>] ? blocking_notifier_call_chain+0x1f/0x30
>> [ 851.560697] [<c0404991>] __device_release_driver+0x51/0xb0
>> [ 851.560701] [<c0404a7f>] driver_detach+0x8f/0xa0
>> [ 851.560705] [<c0403c83>] bus_remove_driver+0x63/0xa0
>> [ 851.560709] [<c0405039>] driver_unregister+0x49/0x80
>> [ 851.560713] [<c0405039>] ? driver_unregister+0x49/0x80
>> [ 851.560718] [<c04dfad7>] sdio_unregister_driver+0x17/0x20
>> [ 851.560727] [<f8dfcb42>] b43_sdio_exit+0x12/0x20 [b43]
>> [ 851.560734] [<f8dfe76f>] b43_exit+0x17/0x3c [b43]
>> [ 851.560740] [<c017fb8d>] sys_delete_module+0x13d/0x200
>> [ 851.560747] [<c01fd7d2>] ? do_munmap+0x212/0x300
>> [ 851.560752] [<c010311f>] sysenter_do_call+0x12/0x28
>> [ 851.560757] ---[ end trace 31e14488072d2f7d ]---
>> [ 851.560759] ------------[ cut here ]------------
>
> I'm not an expert on the sdio interface, but I'll take a crack at this.
>
> The first WARN_ON comes because the host has not been claimed. Please try the
> following patch so that we know if it is claimed when b43_sdio_remove() is
> entered and ssb_unregister_bus() clears it, or it has not been claimed when the
> routine is entered. If the latter, we will likely need to surround the
> sdio_disable_func() calls with sdio_claim_host()...sdio_remove_host() statements.
I get the following output from your patch when unloading b43:
[ 1364.620044] b43-phy1 debug: Removing Interface type 2
[ 1364.621812] b43-phy1 debug: Wireless interface stopped
[ 1372.440297] b43-sdio: before ssb_bus_unregister, claimed is 0
[ 1372.440345] b43-sdio: before sdio_disable_func, claimed is 0
[ 1372.440351] ------------[ cut here ]------------
[ 1372.440367] WARNING: at drivers/mmc/core/core.c:237 mmc_wait_for_cmd+0x88/0x90()
Regards
Arnd
On Thu, 2010-10-28 at 17:08 +0200, Arnd Hannemann wrote:
> > Index: wireless-testing/drivers/net/wireless/b43/sdio.c
> > ===================================================================
> > --- wireless-testing.orig/drivers/net/wireless/b43/sdio.c
> > +++ wireless-testing/drivers/net/wireless/b43/sdio.c
> > @@ -175,7 +175,9 @@ static void b43_sdio_remove(struct sdio_
> > struct b43_sdio *sdio = sdio_get_drvdata(func);
> >
> > ssb_bus_unregister(&sdio->ssb);
> > + sdio_claim_host(func);
> > sdio_disable_func(func);
> > + sdio_release_host(func);
> > kfree(sdio);
> > sdio_set_drvdata(func, NULL);
> > }
> >
>
> Thanks, that fixes the warning.
I'm OK with that patch.
--
Greetings Michael.