diff options
| author | Will Deacon <will.deacon@arm.com> | 2015-02-16 18:38:20 +0000 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:14:48 -0700 |
| commit | aaf63985193d717bba56d601a9521dbc412e0b50 (patch) | |
| tree | f9f55ccdb9ba97c5f36abe07f79674e6a4a98bb5 /include/uapi/linux/string.h | |
| parent | aaa7dcaf86f2d997659a374843a55d3b15bb821f (diff) | |
iommu/io-pgtable-arm: Fix self-test WARNs on i386
Various build/boot bots have reported WARNs being triggered by the ARM
iopgtable LPAE self-tests on i386 machines.
This boils down to two instances of right-shifting a 32-bit unsigned
long (i.e. an iova) by more than the size of the type. On 32-bit ARM,
this happens to give us zero, hence my testing didn't catch this
earlier.
This patch fixes the issue by using DIV_ROUND_UP and explicit case to
to avoid the erroneous shifts.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/uapi/linux/string.h')
0 files changed, 0 insertions, 0 deletions