| commit | 711c71a092ccedf5e24cff25e577bfa0148fce66 | |
| author | Akinobu Mita <akinobu.mita@gmail.com> | |
| Tue, 8 Feb 2011 04:59:50 +0000 (8 04:59 +0000) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Wed, 9 Feb 2011 06:52:54 +0000 (8 22:52 -0800) | ||
| tree | 30af5eb59a443c57f6e189acbf07e1400a7fe73b | treesnapshot (tar.gz zip) |
| parent | e637804c33494e8e7e454dbc625cc4b773f38d6f | commitdiff |
sparc: fix size argument to find_next_zero_bit()
iommu_alloc_ctx() finds a zero bit in iommu->ctx_bitmap. It starts
searching from iommu->ctx_lowest_free to the end of the bitmap.
But the size argument to find_next_zero_bit() in iommu_alloc_ctx()
is wrong. It should be the bitmap size, not the maximum size to
search from the offset argument.
Fortunately iommu->ctx_lowest_free is almost unused and it will not
be more than 1. So the bug wasted only 1-bit at the end of
iommu->ctx_bitmap.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
iommu_alloc_ctx() finds a zero bit in iommu->ctx_bitmap. It starts
searching from iommu->ctx_lowest_free to the end of the bitmap.
But the size argument to find_next_zero_bit() in iommu_alloc_ctx()
is wrong. It should be the bitmap size, not the maximum size to
search from the offset argument.
Fortunately iommu->ctx_lowest_free is almost unused and it will not
be more than 1. So the bug wasted only 1-bit at the end of
iommu->ctx_bitmap.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
| arch/sparc/kernel/iommu.c | diffblobblamehistory |