Yashwanth 35b948550d disp: msm: sde: add null pointer check for encoder current master
During virt enable call, sde_enc master will be removed and
re-assigned. If an underrun is observed during this
scenario, it results in crash due to uninitialized access.
This change handles the above scenario.

Change-Id: Iec9e4a0bc4b763e44933334dacf82f1439eacc17
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>
2020-09-08 10:00:31 +05:30
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