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authorWill Deacon <will.deacon@arm.com>2016-03-21 11:07:15 +0000
committerWill Deacon <will.deacon@arm.com>2016-03-21 11:36:17 +0000
commit357b565d5d52b2dc2a51390eb8f887a9caa8597f (patch)
tree0720017fa61ca0f3e6a152d30d82b4c2a1914fb5 /Documentation/devicetree
parentfe638401a091f4473e9e30942ea3cecc0c0b2b94 (diff)
downloadleg-kernel-357b565d5d52b2dc2a51390eb8f887a9caa8597f.tar.gz
drivers/perf: arm_pmu: avoid NULL dereference when not using devicetree
Commit c6b90653f1f7 ("drivers/perf: arm_pmu: make info messages more verbose") breaks booting on systems where the PMU is probed without devicetree (e.g by inspecting the MIDR of the current CPU). In this case, pdev->dev.of_node is NULL and we shouldn't try to access its ->fullname field when printing probe error messages. This patch fixes the probing code to use of_node_full_name, which safely handles NULL nodes and removes the "Error %i" part of the string, since it's not terribly useful. Reported-by: Guenter Roeck <private@roeck-us.net> Signed-off-by: Will Deacon <will.deacon@arm.com>
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