RE: ifupdown plugin adds wifi device as wired (with patch)

["Gertjan de Back" <Gertjan de Back irextechnologies com>]

> Your device is an SDIO device, right?  In that case, it should have
the
> MMC host as the parent device, and your SDIO driver as the 'driver'
> device.

Ok, that is clear. Here is the sysfs info:

# ls -al /sys/class/net/wlan0
drwxr-xr-x    5 root     root            0 Mar 24 16:32 .
drwxr-xr-x    4 root     root            0 Mar 24 16:32 ..
-r--r--r--    1 root     root         4096 Mar 24 16:39 addr_len
-r--r--r--    1 root     root         4096 Mar 24 16:32 address
-r--r--r--    1 root     root         4096 Mar 24 16:39 broadcast
-r--r--r--    1 root     root         4096 Mar 24 16:39 carrier
lrwxrwxrwx    1 root     root            0 Mar 24 16:32 device ->
../../../class/mmc_host/mmc1/mmc1:0001/mmc1:0001:1
-r--r--r--    1 root     root         4096 Mar 24 16:39 dormant
-r--r--r--    1 root     root         4096 Mar 24 16:39 features
-rw-r--r--    1 root     root         4096 Mar 24 16:32 flags
-r--r--r--    1 root     root         4096 Mar 24 16:32 ifindex
-r--r--r--    1 root     root         4096 Mar 24 16:39 iflink
-r--r--r--    1 root     root         4096 Mar 24 16:39 link_mode
-rw-r--r--    1 root     root         4096 Mar 24 16:39 mtu
-r--r--r--    1 root     root         4096 Mar 24 16:39 operstate
drwxr-xr-x    2 root     root            0 Mar 24 16:39 power
drwxr-xr-x    2 root     root            0 Mar 24 16:39 statistics
lrwxrwxrwx    1 root     root            0 Mar 24 16:32 subsystem ->
../../../class/net
-rw-r--r--    1 root     root         4096 Mar 24 16:39 tx_queue_len
-r--r--r--    1 root     root         4096 Mar 24 16:32 type
-rw-r--r--    1 root     root         4096 Mar 24 16:39 uevent
drwxr-xr-x    2 root     root            0 Mar 24 16:32 wireless

# ls -al /sys/class/net/wlan0/device
lrwxrwxrwx    1 root     root            0 Mar 24 16:32
/sys/class/net/wlan0/device ->
../../../class/mmc_host/mmc1/mmc1:0001/mmc1:0001:1

# ls -al /sys/class/net/wlan0/device/driver
lrwxrwxrwx    1 root     root            0 Mar 24 16:32
/sys/class/net/wlan0/device/driver ->
../../../../../bus/sdio/drivers/sdio_wlan


HAL provides somewhat different info, though. MXCMCI is the iMX SDIO
interface.


# lshal --tree
computer
  <output trimmed>
  platform_mxcmci_1
    platform_mxcmci_1_mmc_host
      net_00_12_cf_8f_26_b1
  <output trimmed>

# lshal -u net_00_12_cf_8f_26_b1
udi = '/org/freedesktop/Hal/devices/net_00_12_cf_8f_26_b1'
  info.capabilities = {'net', 'net.80211'} (string list)
  info.category = 'net.80211'  (string)
  info.parent =
'/org/freedesktop/Hal/devices/platform_mxcmci_1_mmc_host'  (string)
  info.product = 'WLAN Interface'  (string)
  info.subsystem = 'net'  (string)
  info.udi = '/org/freedesktop/Hal/devices/net_00_12_cf_8f_26_b1'
(string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'net'  (string)
  linux.sysfs_path = '/sys/class/net/wlan0'  (string)
  net.80211.mac_address = 80791676593  (0x12cf8f26b1)  (uint64)
  net.address = '00:12:cf:8f:26:b1'  (string)
  net.arp_proto_hw_id = 1  (0x1)  (int)
  net.interface = 'wlan0'  (string)
  net.linux.ifindex = 7  (0x7)  (int)
  net.originating_device =
'/org/freedesktop/Hal/devices/platform_mxcmci_1_mmc_host'  (string)

# lshal -u platform_mxcmci_1_mmc_host
udi = '/org/freedesktop/Hal/devices/platform_mxcmci_1_mmc_host'
  info.capabilities = {'mmc_host'} (string list)
  info.category = 'mmc_host'  (string)
  info.parent = '/org/freedesktop/Hal/devices/platform_mxcmci_1'
(string)
  info.product = 'MMC/SD Host Adapter'  (string)
  info.subsystem = 'mmc_host'  (string)
  info.udi = '/org/freedesktop/Hal/devices/platform_mxcmci_1_mmc_host'
(string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'mmc_host'  (string)
  linux.sysfs_path = '/sys/class/mmc_host/mmc1'  (string)
  mmc_host.host = 1  (0x1)  (int)

# lshal -u platform_mxcmci_1         
udi = '/org/freedesktop/Hal/devices/platform_mxcmci_1'
  info.linux.driver = 'mxcmci'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = 'Platform Device (mxcmci.1)'  (string)
  info.subsystem = 'platform'  (string)
  info.udi = '/org/freedesktop/Hal/devices/platform_mxcmci_1'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'platform'  (string)
  linux.sysfs_path = '/sys/devices/platform/mxcmci.1'  (string)
  platform.id = 'mxcmci.1'  (string)


Printing all this makes me think that platform_mxcmci_1_mmc_host should
have info.linux.driver set to 'sdio_wlan'. Is that right? 

> Are you using the in-kernel SDIO subsystem, and if not, why not?

I believe the SDIO subsystem is provided by the kernel (2.26.24) which
is Freescale-flavoured.

Regards,
Gertjan