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70b0d6b0a1
OP-TEE supplicant is a user-space daemon and it's possible for it
be hung or crashed or killed in the middle of processing an OP-TEE
RPC call. It becomes more complicated when there is incorrect shutdown
ordering of the supplicant process vs the OP-TEE client application which
can eventually lead to system hang-up waiting for the closure of the
client application.
Allow the client process waiting in kernel for supplicant response to
be killed rather than indefinitely waiting in an unkillable state. Also,
a normal uninterruptible wait should not have resulted in the hung-task
watchdog getting triggered, but the endless loop would.
This fixes issues observed during system reboot/shutdown when supplicant
got hung for some reason or gets crashed/killed which lead to client
getting hung in an unkillable state. It in turn lead to system being in
hung up state requiring hard power off/on to recover.
Fixes:
|
||
|---|---|---|
| .. | ||
| call.c | ||
| core.c | ||
| device.c | ||
| ffa_abi.c | ||
| Kconfig | ||
| Makefile | ||
| notif.c | ||
| optee_ffa.h | ||
| optee_msg.h | ||
| optee_private.h | ||
| optee_rpc_cmd.h | ||
| optee_smc.h | ||
| optee_trace.h | ||
| rpc.c | ||
| smc_abi.c | ||
| supp.c | ||