tree 6dc10a1458d40b47a9e7e970087b098f16b86c92
parent 392cbc1edd7d9d36918b9ba22f8f343c9764e921
author Gopichand Nakkala <gnakkala@qca.qualcomm.com> 1369388652 +0530
committer Gopichand Nakkala <gnakkala@qca.qualcomm.com> 1370339122 -0700

wlan: Avoid kernel panic during regionNumber access

Decrement regionNumber value only when regionNumber is greater then zero.
Protect regionNumber value with lock before accessing/changing.

CRs-fixed: 491383
Change-Id: Ib54a0007c2df1ad743bb16a7798498be71f52680