linux-toradex.git/drivers/net/wireless, branch v3.5.7

ath9k: Disable ASPM only for AR9285

2012-10-07T15:35:54+00:00

commit 046b6802c8d3c8a57448485513bf7291633e0fa3 upstream.

Currently, ASPM is disabled for all WLAN+BT combo chipsets
when BTCOEX is enabled. This is incorrect since the workaround
is required only for WB195, which is a AR9285+AR3011 combo
solution. Fix this by checking for the HW version when enabling
the workaround.

Signed-off-by: Sujith Manoharan 
Tested-by: Paul Stewart 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

b43legacy: Fix crash on unload when firmware not available

2012-10-07T15:35:53+00:00

commit 2d838bb608e2d1f6cb4280e76748cb812dc822e7 upstream.

When b43legacy is loaded without the firmware being available, a following
unload generates a kernel NULL pointer dereference BUG as follows:

[  214.330789] BUG: unable to handle kernel NULL pointer dereference at 0000004c
[  214.330997] IP: [] drain_workqueue+0x15/0x170
[  214.331179] *pde = 00000000
[  214.331311] Oops: 0000 [#1] SMP
[  214.331471] Modules linked in: b43legacy(-) ssb pcmcia mac80211 cfg80211 af_packet mperf arc4 ppdev sr_mod cdrom sg shpchp yenta_socket pcmcia_rsrc pci_hotplug pcmcia_core battery parport_pc parport floppy container ac button edd autofs4 ohci_hcd ehci_hcd usbcore usb_common thermal processor scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua scsi_dh fan thermal_sys hwmon ata_generic pata_ali libata [last unloaded: cfg80211]
[  214.333421] Pid: 3639, comm: modprobe Not tainted 3.6.0-rc6-wl+ #163 Source Technology VIC 9921/ALI Based Notebook
[  214.333580] EIP: 0060:[] EFLAGS: 00010246 CPU: 0
[  214.333687] EIP is at drain_workqueue+0x15/0x170
[  214.333788] EAX: c162ac40 EBX: cdfb8360 ECX: 0000002a EDX: 00002a2a
[  214.333890] ESI: 00000000 EDI: 00000000 EBP: cd767e7c ESP: cd767e5c
[  214.333957]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  214.333957] CR0: 8005003b CR2: 0000004c CR3: 0c96a000 CR4: 00000090
[  214.333957] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[  214.333957] DR6: ffff0ff0 DR7: 00000400
[  214.333957] Process modprobe (pid: 3639, ti=cd766000 task=cf802e90 task.ti=cd766000)
[  214.333957] Stack:
[  214.333957]  00000292 cd767e74 c12c5e09 00000296 00000296 cdfb8360 cdfb9220 00000000
[  214.333957]  cd767e90 c104c4fd cdfb8360 cdfb9220 cd682800 cd767ea4 d0c10184 cd682800
[  214.333957]  cd767ea4 cba31064 cd767eb8 d0867908 cba31064 d087e09c cd96f034 cd767ec4
[  214.333957] Call Trace:
[  214.333957]  [] ? skb_dequeue+0x49/0x60
[  214.333957]  [] destroy_workqueue+0xd/0x150
[  214.333957]  [] ieee80211_unregister_hw+0xc4/0x100 [mac80211]
[  214.333957]  [] b43legacy_remove+0x78/0x80 [b43legacy]
[  214.333957]  [] ssb_device_remove+0x1d/0x30 [ssb]
[  214.333957]  [] __device_release_driver+0x5a/0xb0
[  214.333957]  [] driver_detach+0x87/0x90
[  214.333957]  [] bus_remove_driver+0x6c/0xe0
[  214.333957]  [] driver_unregister+0x40/0x70
[  214.333957]  [] ssb_driver_unregister+0xb/0x10 [ssb]
[  214.333957]  [] b43legacy_exit+0xd/0xf [b43legacy]
[  214.333957]  [] sys_delete_module+0x14e/0x2b0
[  214.333957]  [] ? vfs_write+0xf7/0x150
[  214.333957]  [] ? tty_write_lock+0x50/0x50
[  214.333957]  [] ? sys_write+0x38/0x70
[  214.333957]  [] syscall_call+0x7/0xb
[  214.333957] Code: bc 27 00 00 00 00 a1 74 61 56 c1 55 89 e5 e8 a3 fc ff ff 5d c3 90 55 89 e5 57 56 89 c6 53 b8 40 ac 62 c1 83 ec 14 e8 bb b7 34 00 <8b> 46 4c 8d 50 01 85 c0 89 56 4c 75 03 83 0e 40 80 05 40 ac 62
[  214.333957] EIP: [] drain_workqueue+0x15/0x170 SS:ESP 0068:cd767e5c
[  214.333957] CR2: 000000000000004c
[  214.341110] ---[ end trace c7e90ec026d875a6 ]---Index: wireless-testing/drivers/net/wireless/b43legacy/main.c

The problem is fixed by making certain that the ucode pointer is not NULL
before deregistering the driver in mac80211.

Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: fix flow handler debug code

2012-10-02T17:39:45+00:00

commit 94543a8d4fb302817014981489f15cb3b92ec3c2 upstream.

iwl_dbgfs_fh_reg_read() can cause crashes and/or
BUG_ON in slub because the ifdefs are wrong, the
code in iwl_dump_fh() should use DEBUGFS, not
DEBUG to protect the buffer writing code.

Also, while at it, clean up the arguments to the
function, some code and make it generally safer.

Reported-by: Benjamin Herrenschmidt 
Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: protect SRAM debugfs

2012-10-02T17:39:45+00:00

commit 4fc79db178f0a0ede479b4713e00df2d106028b3 upstream.

If the device is not started, we can't read its
SRAM and attempting to do so will cause issues.
Protect the debugfs read.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: don't double free the interrupt in failure path

2012-10-02T17:39:45+00:00

commit a7be50b7e30f9d77cb059a7ffdb781bb0fb92eba upstream.

When the driver can't get the HW ready, we would release
the interrupt twice which made the kernel complain loudly.

Reported-by: Brian Cockrell 
Tested-by: Brian Cockrell 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2800usb: Added rx packet length validity check

2012-10-02T17:39:37+00:00

commit efd5d6b03bd9c9e0df646c56fb5f4f3e25e5c1ac upstream.

On our system (ARM Cortex-M3 SOC running linux-2.6.33)
frequent crashes were observed in the rt2800usb module
because of the invalid length of the received packet (3392,
46920...). This patch adds the sanity check on the packet
legth. Also, changed WARNING to ERROR in rt2x00lib_rxdone()
so that the bad packet condition would be noticed.

The fix was tested on the latest compat-wireless-3.5.1-1-snpc.

Signed-off-by: Sergei Poselenov 
Acked-by: Ivo van Doorn 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: Fix rfkill polling prior to interface start.

2012-10-02T17:39:27+00:00

commit a396e10019eaf3809b0219c966865aaafec12630 upstream.

We need to program the rfkill switch GPIO pin direction to input at
device initialization time, not only when the interface is brought up.
Doing this only when the interface is brought up could lead to rfkill
detecting the switch is turned on erroneously and inability to create
the interface and bringing it up.

Reported-and-tested-by: Andreas Messer 
Signed-off-by: Gertjan van Wingerde 
Acked-by: Ivo Van Doorn 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: Fix word size of rt2500usb MAC_CSR19 register.

2012-10-02T17:39:26+00:00

commit 6ced58a5dbb94dbfbea1b33ca3c56d1e929cd548 upstream.

The register is 16 bits wide, not 32.

Signed-off-by: Gertjan van Wingerde 
Acked-by: Ivo Van Doorn 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: Identify ASUS USB-N53 device.

2012-10-02T17:39:26+00:00

commit 177ef8360fabdc49ff08d2598c06e7f7a36b53e3 upstream.

This is an RT3572 based device.

Signed-off-by: Maximilian Engelhardt 
Signed-off-by: Gertjan van Wingerde 
Acked-by: Ivo Van Doorn 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: rtl8192ce: Log message that B_CUT device may not work

2012-10-02T17:39:25+00:00

commit 022e1d0680c7b4366017393417b8758be5abcee8 upstream.

There are a number of problems that occur for the latest version
of the Realtek RTL8188CE device with the in-kernel driver. These
include selection of the wrong firmware, and system lockup. A full
fix is known, but is too invasive for inclusion in stable. This patch
fixes the problem with loading the wrong firmware, and logs a message
that the device may not work for kernels 3.6 and older.

Signed-off-by: Larry Finger 
Cc: Anisse Astier 
Cc: Li Chaoming 
Tested-by: Anisse Astier 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman