Merge tag 's390-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Vasily Gorbik:

 - Fix three kasan findings

 - Add PERF_EVENT_IOC_PERIOD ioctl support

 - Add Crypto Express7S support and extend sysfs attributes for pkey

 - Minor common I/O layer documentation corrections

* tag 's390-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: exclude subchannels with no parent from pseudo check
  s390/cio: avoid calling strlen on null pointer
  s390/topology: avoid firing events before kobjs are created
  s390/cpumf: Remove mixed white space
  s390/cpum_sf: Support ioctl PERF_EVENT_IOC_PERIOD
  s390/zcrypt: CEX7S exploitation support
  s390/cio: fix intparm documentation
  s390/pkey: Add sysfs attributes to emit AES CIPHER key blobs

arch/s390/include/uapi/asm/zcrypt.h

@@ -4,7 +4,7 @@
  *
  *  zcrypt 2.2.1 (user-visible header)
  *
- *  Copyright IBM Corp. 2001, 2018
+ *  Copyright IBM Corp. 2001, 2019
  *  Author(s): Robert Burroughs
  *	       Eric Rossman (edrossma@us.ibm.com)
  *
@@ -286,7 +286,7 @@ struct zcrypt_device_matrix_ext {
  *	 0x08: CEX3A
  *	 0x0a: CEX4
  *	 0x0b: CEX5
- *	 0x0c: CEX6
+ *	 0x0c: CEX6 and CEX7
  *	 0x0d: device is disabled
  *
  *   ZCRYPT_QDEPTH_MASK