i8k: Avoid lahf in 64-bit code
authorLuca Tettamanti <kronos.it@gmail.com>
Wed, 25 May 2011 18:43:31 +0000 (20:43 +0200)
committerJean Delvare <khali@endymion.delvare>
Wed, 25 May 2011 18:43:31 +0000 (20:43 +0200)
commitbc1f419c76a2d6450413ce4349f4e4a07be011d5
treeb89b92a6eca16ddd70336da9e26659b6b2414a90
parent4a7df24ddc7097cd789a7527187826552ea0765e
i8k: Avoid lahf in 64-bit code

i8k uses lahf to read the flag register in 64-bit code; early x86-64
CPUs, however, lack this instruction and we get an invalid opcode
exception at runtime.
Use pushf to load the flag register into the stack instead.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Reported-by: Jeff Rickman <jrickman@myamigos.us>
Tested-by: Jeff Rickman <jrickman@myamigos.us>
Tested-by: Harry G McGavran Jr <w5pny@arrl.net>
Cc: stable@kernel.org
Cc: Massimo Dal Zotto <dz@debian.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
drivers/char/i8k.c