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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"
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