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Commit 46b05c7b authored by Ingo Tuchscherer's avatar Ingo Tuchscherer Committed by Martin Schwidefsky
Browse files

s390/zcrypt: Fixed possible race condition in zcrypt module handling 



Signed-off-by: default avatarIngo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 9fc98ad0

drivers/s390/crypto/zcrypt_api.c

+3 −4
Original line number Diff line number Diff line
@@ -343,10 +343,11 @@ struct zcrypt_ops *__ops_lookup(unsigned char *name, int variant) 
			break;

		}

	}

	if (!found || !try_module_get(zops->owner))

		zops = NULL;



	spin_unlock_bh(&zcrypt_ops_list_lock);



	if (!found)

		return NULL;

	return zops;

}
@@ -359,8 +360,6 @@ struct zcrypt_ops *zcrypt_msgtype_request(unsigned char *name, int variant) 
		request_module("%s", name);

		zops = __ops_lookup(name, variant);

	}

	if ((!zops) || (!try_module_get(zops->owner)))

		return NULL;

	return zops;

}

EXPORT_SYMBOL(zcrypt_msgtype_request);