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rt2x00: Fix rfkill polling prior to interface start.

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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 <andi@bastelmap.de>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: <stable@vger.kernel.org>
Acked-by: Ivo Van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gertjan van Wingerde
2012-08-31 19:22:11 +02:00
committed by John W. Linville
parent 6ced58a5db
commit a396e10019
11 changed files with 69 additions and 0 deletions
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9
drivers/net/wireless/rt2x00/rt2800pci.c
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@@ -983,6 +983,7 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
u32 reg;
/*
* Allocate eeprom data.
@@ -995,6 +996,14 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
if (retval)
return retval;
/*
* Enable rfkill polling by setting GPIO direction of the
* rfkill switch GPIO pin correctly.
*/
rt2x00pci_register_read(rt2x00dev, GPIO_CTRL_CFG, &reg);
rt2x00_set_field32(&reg, GPIO_CTRL_CFG_GPIOD_BIT2, 1);
rt2x00pci_register_write(rt2x00dev, GPIO_CTRL_CFG, reg);
/*
* Initialize hw specifications.
*/