Commit ec1722a2 authored Feb 09, 2010 by Mario Limonciello Committed by Matthew Garrett Feb 25, 2010

dell-laptop: Block software state changes when rfkill hard blocked



The "hardware" switch is tied directly to a BIOS interface that will
connect and disconnect the hardware from the bus.

If you use the software interface to request the BIOS to make these
changes, the HW switch will be in an inconsistent state and LEDs may not
reflect the state of the HW.

Signed-off-by: Mario Limonciello <Mario_Limonciello@Dell.com>

parent e551260b

drivers/platform/x86/dell-laptop.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -190,6 +190,10 @@ static int dell_rfkill_set(void *data, bool blocked)
		unsigned long radio = (unsigned long)data;

		memset(&buffer, 0, sizeof(struct calling_interface_buffer));
		dell_send_request(&buffer, 17, 11);
		if (!(buffer.output[1] & BIT(16)))
		return -EINVAL;

		buffer.input[0] = (1 \| (radio<<8) \| (disable << 16));
		dell_send_request(&buffer, 17, 11);