tree 7f1b3ef5e5324df128785e2216ebedf7b4666ee1
parent 659a6e38db0b422c63fd68ca7e78a8daadca061e
author Anju T Sudhakar <anju@linux.vnet.ibm.com> 1543307092 +0530
committer Michael Ellerman <mpe@ellerman.id.au> 1556816099 +1000

powerpc/perf: Return accordingly on invalid chip-id in

Nest hardware counter memory resides in a per-chip reserve-memory.
During nest_imc_event_init(), chip-id of the event-cpu is considered to
calculate the base memory addresss for that cpu. Return, proper error
condition if the chip_id calculated is invalid.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 885dcd709ba91 ("powerpc/perf: Add nest IMC PMU support")
Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>