s390/cio: don't register chpids in reserved state
During IPL we register all chpids that are not in the unrecognized state. This includes chpids that are not usable and chpids for which the state could not be obtained. Change that to only register chpids in the configured (usable) or standby (usable after a configure operation) state. All other chpids could only be made available by external control for which we would receive machine checks. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -780,7 +780,7 @@ static int cfg_wait_idle(void)
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static int __init chp_init(void)
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{
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struct chp_id chpid;
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int ret;
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int state, ret;
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ret = crw_register_handler(CRW_RSC_CPATH, chp_process_crw);
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if (ret)
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@ -791,7 +791,9 @@ static int __init chp_init(void)
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return 0;
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/* Register available channel-paths. */
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chp_id_for_each(&chpid) {
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if (chp_info_get_status(chpid) != CHP_STATUS_NOT_RECOGNIZED)
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state = chp_info_get_status(chpid);
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if (state == CHP_STATUS_CONFIGURED ||
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state == CHP_STATUS_STANDBY)
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chp_new(chpid);
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}
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