Description: staging: ion: move buffer kmap from begin/end_cpu_access() References: https://source.android.com/security/bulletin/2021-11-01 Notes: carnil> In mainline 3e9e0c5c7647 ("staging/android/ion: delete dma_buf->kmap/unmap carnil> implemenation") in 5.6-rc1 removed the implementation. carnil> e722a295cf49 ("staging: ion: remove from the tree") removed the carnil> driver from mainline in 5.11-rc1. carnil> The ION driver is not built in Debian (CONFIG_ION not enabled). Bugs: upstream: released (5.6-rc1) [3e9e0c5c764704218c0960ffdb139de075afaadf] 6.1-upstream-stable: N/A "Fixed before branch point" 5.10-upstream-stable: N/A "Fixed before branching point" 4.19-upstream-stable: needed 4.9-upstream-stable: ignored "EOL" sid: released (5.6.7-1) 6.1-bookworm-security: N/A "Fixed before branch point" 5.10-bullseye-security: ignored "ION driver not enabled" 4.19-buster-security: ignored "ION driver not enabled" 4.9-stretch-security: ignored "ION driver not enabled"