• Philippe Bergheaud's avatar
    cxl: Use fixed width predefined types in data structure. · cbd74e1b
    Philippe Bergheaud authored
    This patch fixes a regression introduced by commit b810253b ("cxl:
    Add mechanism for delivering AFU driver specific events").
    
    It changes the type u8 to __u8 in the uapi header cxl.h, because the
    former is a kernel internal type, and may not be defined in userland
    build environments, in particular when cross-compiling libcxl on x86_64
    linux machines (RHEL6.7 and Ubuntu 16.04).
    
    This patch also changes the size of the field data_size, and makes it
    constant, to support 32-bit userland applications running on big-endian
    ppc64 kernels transparently.
    
    mpe: This is an ABI change, however the ABI was only added during the
    4.8 merge window so has never been part of a released kernel - therefore
    we give ourselves permission to change it.
    
    Fixes: b810253b ("cxl: Add mechanism for delivering AFU driver specific events")
    Signed-off-by: 's avatarPhilippe Bergheaud <felix@linux.vnet.ibm.com>
    Reviewed-by: 's avatarFrederic Barrat <fbarrat@linux.vnet.ibm.com>
    Signed-off-by: 's avatarMichael Ellerman <mpe@ellerman.id.au>
    cbd74e1b
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