linux-stable.git/drivers/net/wireless/rt2x00, branch linux-3.0.y

rt2800: fix wrong TX power compensation

2013-10-01T15:55:47+00:00

commit 6e956da2027c767859128b9bfef085cf2a8e233b upstream.

We should not do temperature compensation on devices without
EXTERNAL_TX_ALC bit set (called DynamicTxAgcControl on vendor driver).
Such devices can have totally bogus TSSI parameters on the EEPROM,
but still threaded by us as valid and result doing wrong TX power
calculations.

This fix inability to connect to AP on slightly longer distance on
some Ralink chips/devices.

Reported-and-tested-by: Fabien ADAM 
Signed-off-by: Stanislaw Gruszka 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: fix stop queue

2013-08-11T22:38:22+00:00

commit e2288b66fe7ff0288382b2af671b4da558b44472 upstream.

Since we clear QUEUE_STARTED in rt2x00queue_stop_queue(), following
call to rt2x00queue_pause_queue() reduce to noop, i.e we do not
stop queue in mac80211.

To fix that introduce rt2x00queue_pause_queue_nocheck() function,
which will stop queue in mac80211 directly.

Note that rt2x00_start_queue() explicitly set QUEUE_PAUSED bit.

Note also that reordering operations i.e. first call to
rt2x00queue_pause_queue() and then clear QUEUE_STARTED bit, will race
with rt2x00queue_unpause_queue(), so calling ieee80211_stop_queue()
directly is the only available solution to fix the problem without
major rework.

Signed-off-by: Stanislaw Gruszka 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: read 5GHz TX power values from the correct offset

2013-07-28T23:18:26+00:00

commit 0a6f3a8ebaf13407523c2c7d575b4ca2debd23ba upstream.

The current code uses the same index value both
for the channel information array and for the TX
power table. The index starts from 14, however the
index of the TX power table must start from zero.

Fix it, in order to get the correct TX power value
for a given channel.

The changes in rt61pci.c and rt73usb.c are compile
tested only.

Signed-off-by: Gabor Juhos 
Acked-by: Stanislaw Gruszka 
Acked-by: Gertjan van Wingerde 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: rt2x00pci_regbusy_read() - only print register access failure once

2013-04-12T16:18:10+00:00

commit 83589b30f1e1dc9898986293c9336b8ce1705dec upstream.

BugLink: http://bugs.launchpad.net/bugs/1128840

It appears that when this register read fails it never recovers, so
I think there is no need to repeat the same error message ad infinitum.

Signed-off-by: Tim Gardner 
Cc: Ivo van Doorn 
Cc: Gertjan van Wingerde 
Cc: Helmut Schaa 
Cc: "John W. Linville" 
Cc: linux-wireless@vger.kernel.org
Cc: users@rt2x00.serialmonkey.com
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2x00: error in configurations with mesh support disabled

2013-03-28T19:06:14+00:00

commit 6ef9e2f6d12ce9e2120916804d2ddd46b954a70b upstream.

If CONFIG_MAC80211_MESH is not set, cfg80211 will now allow advertising
interface combinations with NL80211_IFTYPE_MESH_POINT present.
Add appropriate ifdefs to avoid running into errors.

[Backported for 3.8-stable. Removed code of simultaneous AP and mesh
mode added in 4a5fc6d 3.9-rc1.]

Signed-off-by: Felix Fietkau 
Acked-by: Gertjan van Wingerde 
Signed-off-by: John W. Linville 
Signed-off-by: Lingzhu Xiang 
Reviewed-by: CAI Qian 
Signed-off-by: Greg Kroah-Hartman

rt2800: validate step value for temperature compensation

2012-11-17T21:14:20+00:00

commit bf7e1abe434ba9e22e8dc04a4cba4ab504b788b8 upstream.

Some hardware has correct (!= 0xff) value of tssi_bounds[4] in the
EEPROM, but step is equal to 0xff. This results on ridiculous delta
calculations and completely broke TX power settings.

Reported-and-tested-by: Pavel Lucik 
Signed-off-by: Stanislaw Gruszka 
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.

2012-10-02T16:47:37+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.

2012-10-02T16:47:37+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: Add support for BUFFALO WLI-UC-GNM2 to rt2800usb.

2012-08-26T22:12:13+00:00

commit a769f9577232afe2c754606a83aad85127e7052a upstream.

This is a RT3070 based device.

Signed-off-by: Jeongdo Son 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt61pci: fix NULL pointer dereference in config_lna_gain

2012-08-15T19:04:30+00:00

commit deee0214def5d8a32b8112f11d9c2b1696e9c0cb upstream.

We can not pass NULL libconf->conf->channel to rt61pci_config() as it
is dereferenced unconditionally in rt61pci_config_lna_gain() subroutine.

Resolves:
https://bugzilla.kernel.org/show_bug.cgi?id=44361

Reported-and-tested-by: 
Signed-off-by: Stanislaw Gruszka 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman