Merge tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:

 - A copy of Arnds compat wrapper generation series

 - Pass information about the KVM guest to the host in form the control
   program code and the control program version code

 - Map IOV resources to support PCI physical functions on s390

 - Add vector load and store alignment hints to improve performance

 - Use the "jdd" constraint with gcc 9 to make jump labels working again

 - Remove amode workaround for old z/VM releases from the DCSS code

 - Add support for in-kernel performance measurements using the CPU
   measurement counter facility

 - Introduce a new PMU device cpum_cf_diag to capture counters and store
   thenn as event raw data.

 - Bug fixes and cleanups

* tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
  Revert "s390/cpum_cf: Add kernel message exaplanations"
  s390/dasd: fix read device characteristic with CONFIG_VMAP_STACK=y
  s390/suspend: fix prefix register reset in swsusp_arch_resume
  s390: warn about clearing als implied facilities
  s390: allow overriding facilities via command line
  s390: clean up redundant facilities list setup
  s390/als: remove duplicated in-place implementation of stfle
  s390/cio: Use cpa range elsewhere within vfio-ccw
  s390/cio: Fix vfio-ccw handling of recursive TICs
  s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem
  s390/cpum_cf: Handle EBUSY return code from CPU counter facility reservation
  s390/cpum_cf: Add kernel message exaplanations
  s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace
  s390/cpum_cf: add ctr_stcctm() function
  s390/cpum_cf: move common functions into a separate file
  s390/cpum_cf: introduce kernel_cpumcf_avail() function
  s390/cpu_mf: replace stcctm5() with the stcctm() function
  s390/cpu_mf: add store cpu counter multiple instruction support
  s390/cpum_cf: Add minimal in-kernel interface for counter measurements
  s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts
  ...

1 files changed, 2 insertions, 6 deletions

diff --git a/arch/s390/hypfs/hypfs_dbfs.c b/arch/s390/hypfs/hypfs_dbfs.c
index b9bdf5c1918e..f4c7dbfaf8ee 100644
--- a/arch/s390/hypfs/hypfs_dbfs.c
+++ b/arch/s390/hypfs/hypfs_dbfs.c
@@ -78,14 +78,11 @@ static const struct file_operations dbfs_ops = {
 	.unlocked_ioctl = dbfs_ioctl,
 };
 
-int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
+void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
 {
 	df->dentry = debugfs_create_file(df->name, 0400, dbfs_dir, df,
 					 &dbfs_ops);
-	if (IS_ERR(df->dentry))
-		return PTR_ERR(df->dentry);
 	mutex_init(&df->lock);
-	return 0;
 }
 
 void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df)
@@ -93,10 +90,9 @@ void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df)
 	debugfs_remove(df->dentry);
 }
 
-int hypfs_dbfs_init(void)
+void hypfs_dbfs_init(void)
 {
 	dbfs_dir = debugfs_create_dir("s390_hypfs", NULL);
-	return PTR_ERR_OR_ZERO(dbfs_dir);
 }
 
 void hypfs_dbfs_exit(void)