Commit 3a5da467 authored by Thomas Richter's avatar Thomas Richter Committed by Heiko Carstens
Browse files

s390/pai_crypto: emit error on too many counters 



When the device driver is initialized, it checks the number of
possible counters. Should this number be too high, emit an error
and return.

Reported-by: default avatarSumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Acked-by: default avatarSumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 225d09d6

arch/s390/kernel/perf_pai_crypto.c

+4 −2
Original line number Diff line number Diff line
@@ -742,8 +742,10 @@ static int __init paicrypt_init(void) 
	paicrypt_cnt = ib.num_cc;

	if (paicrypt_cnt == 0)

		return 0;

	if (paicrypt_cnt >= PAI_CRYPTO_MAXCTR)

		paicrypt_cnt = PAI_CRYPTO_MAXCTR - 1;

	if (paicrypt_cnt >= PAI_CRYPTO_MAXCTR) {

		pr_err("Too many PMU pai_crypto counters %d\n", paicrypt_cnt);

		return -1;

	}



	rc = attr_event_init();		/* Export known PAI crypto events */

	if (rc) {