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| author | Mark Rutland <mark.rutland@arm.com> | 2013-03-07 15:09:24 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-03-07 17:16:11 +0100 |
| commit | a7dc19b8652c862d5b7c4d2339bd3c428bd29c4a (patch) | |
| tree | cc31aa42ae65ec413ae1ee586307cf8687fdbc92 /kernel/audit_tree.c | |
| parent | 6dbe51c251a327e012439c4772097a13df43c5b8 (diff) | |
| download | op-kernel-dev-a7dc19b8652c862d5b7c4d2339bd3c428bd29c4a.zip op-kernel-dev-a7dc19b8652c862d5b7c4d2339bd3c428bd29c4a.tar.gz | |
clockevents: Don't allow dummy broadcast timers
Currently tick_check_broadcast_device doesn't reject clock_event_devices
with CLOCK_EVT_FEAT_DUMMY, and may select them in preference to real
hardware if they have a higher rating value. In this situation, the
dummy timer is responsible for broadcasting to itself, and the core
clockevents code may attempt to call non-existent callbacks for
programming the dummy, eventually leading to a panic.
This patch makes tick_check_broadcast_device always reject dummy timers,
preventing this problem.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/audit_tree.c')
0 files changed, 0 insertions, 0 deletions
