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    Subject[PATCH 22/23] AMD IOMMU: use cmd_buf_size when freeing the command buffer
    Date
    From: Joerg Roedel <jroedel@lemmy.amd.com>

    The command buffer release function uses the CMD_BUF_SIZE macro for
    get_order. Replace this with iommu->cmd_buf_size which is more reliable
    about the actual size of the buffer.

    Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
    ---
    arch/x86/kernel/amd_iommu_init.c | 3 ++-
    1 files changed, 2 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
    index 5303404..d0ea4d3 100644
    --- a/arch/x86/kernel/amd_iommu_init.c
    +++ b/arch/x86/kernel/amd_iommu_init.c
    @@ -434,7 +434,8 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu)

    static void __init free_command_buffer(struct amd_iommu *iommu)
    {
    - free_pages((unsigned long)iommu->cmd_buf, get_order(CMD_BUFFER_SIZE));
    + free_pages((unsigned long)iommu->cmd_buf,
    + get_order(iommu->cmd_buf_size));
    }

    /* allocates the memory where the IOMMU will log its events to */
    --
    1.5.6.4



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