diff options
| author | Daniel Drake <drake@endlessm.com> | 2019-01-07 06:40:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-31 10:13:46 +0300 |
| commit | a0aab0f76606a29a49f89142a07ab412f5ae5658 (patch) | |
| tree | 36893ce1d6514c9341f6aed653a377d46bcc47ac /arch/x86 | |
| parent | ce20aba74c69084c1f87725b68a507735733c798 (diff) | |
| download | linux-a0aab0f76606a29a49f89142a07ab412f5ae5658.tar.xz | |
x86/kaslr: Fix incorrect i8254 outb() parameters
commit 7e6fc2f50a3197d0e82d1c0e86282976c9e6c8a4 upstream.
The outb() function takes parameters value and port, in that order. Fix
the parameters used in the kalsr i8254 fallback code.
Fixes: 5bfce5ef55cb ("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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/lib/kaslr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/lib/kaslr.c b/arch/x86/lib/kaslr.c index 79778ab200e4..a53665116458 100644 --- a/arch/x86/lib/kaslr.c +++ b/arch/x86/lib/kaslr.c @@ -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; |