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mailbox: pcc: Reset pcc_chan_count to zero in case of PCC probe failure
Currently, 'pcc_chan_count' is remains set to a non-zero value if PCC
subspaces are parsed successfully but something else fail later during
the initial PCC probing phase. This will result in pcc_mbox_request_channel
trying to access the resources that are not initialised or allocated and
may end up in a system crash.
Reset pcc_chan_count to 0 when the PCC probe fails in order to prevent
the possible issue as described above.
Fixes: ce028702dd
("mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe")
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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parent
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@ -743,6 +743,7 @@ static int __init pcc_init(void)
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if (IS_ERR(pcc_pdev)) {
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pr_debug("Err creating PCC platform bundle\n");
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pcc_chan_count = 0;
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return PTR_ERR(pcc_pdev);
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}
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