From: Russell Currey <redacted>

secvar_ops->get_next() returns -ENOENT when there are no more variables
to return, which is expected behaviour.

Fix this by returning 0 if get_next() returns -ENOENT.

This fixes an issue introduced in commit bd5d9c743d38 ("powerpc: expose
secure variables to userspace via sysfs"), but the return code of
secvar_sysfs_load() was never checked so this issue never mattered.

Signed-off-by: Russell Currey <redacted>
Signed-off-by: Andrew Donnellan <redacted>

---

v5: New patch
---
  arch/powerpc/kernel/secvar-sysfs.c | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/secvar-sysfs.c b/arch/powerpc/kernel/secvar-sysfs.c
index 1ee4640a2641..7fa5f8ed9542 100644
--- a/arch/powerpc/kernel/secvar-sysfs.c
+++ b/arch/powerpc/kernel/secvar-sysfs.c

@@ -179,8 +179,10 @@ static int secvar_sysfs_load(void)
  		rc = secvar_ops->get_next(name, &namesize, NAME_MAX_SIZE);
  		if (rc) {
  			if (rc != -ENOENT)
-				pr_err("error getting secvar from firmware %d\n",
-				       rc);
+				pr_err("error getting secvar from firmware %d\n", rc);
+			else
+				rc = 0;
+
  			break;
  		}