b8336bb35b
mutex is used uninitialized while unloading N_TTY line discipline and installing SMUX Line discipline as msm_hs_shutdown() of HSUART driver is called which is destroying this used mutex. Hence while SMUX Line discipline is used, and clock off API is called, mutex slowpath warning is seen. Destroying of mutex shouldn't be done from msm_hs_shutdown() as initizalition and destroying of the mutex is done from probe() and remove() of HSUART driver. Hence don't destroy mutex from msm_hs_shutdown() to fix the issue. CRs-Fixed: 391551 Change-Id: I74ac1372405e1b893d658ee03e9955858c9e782f Signed-off-by: Mayank Rana <mrana@codeaurora.org> (cherry picked from commit d21314cc42558fe60cb0052bb1b645985f6be456)