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x86/kaslr: Fix incorrect i8254 outb() parameters

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The outb() function takes parameters value and port, in that order.  Fix
the parameters used in the kalsr i8254 fallback code.

Fixes: 5bfce5ef55 ("x86, kaslr: Provide randomness functions")
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: linux@endlessm.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190107034024.15005-1-drake@endlessm.com
This commit is contained in:
Daniel Drake 2019-01-07 11:40:24 +08:00 committed by Thomas Gleixner
parent 5962dd22f0
commit 7e6fc2f50a
1 changed files with 2 additions and 2 deletions
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4
arch/x86/lib/kaslr.c
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@ -36,8 +36,8 @@ static inline u16 i8254(void)
u16 status, timer;
do {
outb(I8254_PORT_CONTROL,
I8254_CMD_READBACK | I8254_SELECT_COUNTER0);
outb(I8254_CMD_READBACK | I8254_SELECT_COUNTER0,
I8254_PORT_CONTROL);
status = inb(I8254_PORT_COUNTER0);
timer = inb(I8254_PORT_COUNTER0);
timer |= inb(I8254_PORT_COUNTER0) << 8;