iommu: iommu-debug: Return an error value on invalid data format
If a user passes an invalid data format to the "unmap" debugfs file,
return a negative value instead of zero.
Change-Id: Ie9a0086901f1445935818583d78e06193f3133b1
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
diff --git a/drivers/iommu/iommu-debug.c b/drivers/iommu/iommu-debug.c
index 6562cb6..1ea8901 100644
--- a/drivers/iommu/iommu-debug.c
+++ b/drivers/iommu/iommu-debug.c
@@ -1798,7 +1798,7 @@
invalid_format:
pr_err("Invalid format. Expected: iova,len\n");
- return retval;
+ return -EINVAL;
}
static const struct file_operations iommu_debug_unmap_fops = {