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josh_hsu authored
msm: mdss: Unmap only when buffer was mapped
Currently buffer is unmapped if iommu is attached.
This can lead to potential unmap issues if wrong
addresses are sent and are tried to unmap without
mapping. Hence ensure unmap is done only when
buffer is mapped.

Change-Id: I339d6aefa501cda0ed0cf8f6b9c516b64d892b82
Reviewed-on: http://mcrd1-22-pc.corpnet.asus/code-review/master/248994


Reviewed-by: default avatarCarol_Jiang <carol_jiang@asus.com>
Tested-by: default avatarCarol_Jiang <carol_jiang@asus.com>
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