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authorSudeep Holla <sudeep.holla@arm.com>2015-03-17 17:28:46 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-03-25 14:38:41 +0100
commit8a7d95f95c95f396decbd4cda6d4903fc4664946 (patch)
tree91c6199e18c369b5cd55ffa5b1659fcc707d5115 /drivers/isdn
parent2071b9502dadffd22ac1bc31c68728e2783ec3ac (diff)
drivers/base: cacheinfo: validate device node for all the caches
On architectures that depend on DT for obtaining cache hierarcy, we need to validate the device node for all the cache indices, failing to do so might result in wrong information being exposed to the userspace. This is quite possible on initial/incomplete versions of the device trees. In such cases, it's better to bail out if all the required device nodes are not present. This patch adds checks for the validation of device node for all the caches and doesn't initialise the cacheinfo if there's any error. Reported-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Cc: stable <stable@vger.kernel.org> # 4.0 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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