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>

parent 781558f3

drivers/iommu/iommu-debug.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1798,7 +1798,7 @@ static ssize_t iommu_debug_unmap_write(struct file *file,

	invalid_format:		invalid_format:
	pr_err("Invalid format. Expected: iova,len\n");		pr_err("Invalid format. Expected: iova,len\n");
	return retval;		return -EINVAL;
	}		}

	static const struct file_operations iommu_debug_unmap_fops = {		static const struct file_operations iommu_debug_unmap_fops = {