| commit | e5a21327644adba32816f74a415114d11c57f2e9 | |
| author | Will Deacon <will.deacon@arm.com> | |
| Tue, 22 Nov 2011 18:01:46 +0000 (22 18:01 +0000) | ||
| committer | Will Deacon <will.deacon@arm.com> | |
| Tue, 22 Nov 2011 18:01:46 +0000 (22 18:01 +0000) | ||
| tree | 81264b2c3ba630e7f5d4f43f9ad99e6268515dad | treesnapshot (tar.gz zip) |
| parent | bce34d14428d35d9a06ddc10cd46ecef311764c9 | commitdiff |
ARM: perf: check that we have a platform device when reserving PMU
Attempting to use a hardware counter on a platform with a supported PMU
but where the platform_device (defining the interrupts) has not been
registered results in a NULL pointer dereference.
This patch fixes the problem by checking that we actually have a platform
device registered before attempting to grab the interrupts.
Reported-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Attempting to use a hardware counter on a platform with a supported PMU
but where the platform_device (defining the interrupts) has not been
registered results in a NULL pointer dereference.
This patch fixes the problem by checking that we actually have a platform
device registered before attempting to grab the interrupts.
Reported-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
| arch/arm/kernel/perf_event.c | diffblobblamehistory |