This patch fixes a regression introduced by commit b810253bd934 ("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.
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| @@ -136,8 +136,8 @@ struct cxl_event_afu_driver_reserved { · 135 unmodified lines | ||
| 136 | 136 | * |
| 137 | 137 | * Of course the contents will be ABI, but that's up the AFU driver. |
| 138 | 138 | */ |
| 139 | − size_t data_size; | |
| 140 | − u8 data[]; | |
| 139 | + __u32 data_size; | |
| 140 | + __u8 data[]; | |
| 141 | 141 | }; |
| 142 | 142 | |
| 143 | 143 | struct cxl_event { |