diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 190592ad0921..466dc95d5611 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -2480,15 +2480,7 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes,
 	async = s->async;
 	if (!nbytes)
 		goto out;
-	if (!s->busy) {
-		retval = -EINVAL;
-		goto out;
-	}
-	if (s->busy != file) {
-		retval = -EACCES;
-		goto out;
-	}
-	if (async->cmd.flags & CMDF_WRITE) {
+	if (s->busy != file || (async->cmd.flags & CMDF_WRITE)) {
 		retval = -EINVAL;
 		goto out;
 	}
@@ -2520,15 +2512,8 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes,
 				retval = -ERESTARTSYS;
 				break;
 			}
-			if (!s->busy) {
-				retval = -EINVAL;
-				break;
-			}
-			if (s->busy != file) {
-				retval = -EACCES;
-				break;
-			}
-			if (async->cmd.flags & CMDF_WRITE) {
+			if (s->busy != file ||
+			    (async->cmd.flags & CMDF_WRITE)) {
 				retval = -EINVAL;
 				break;
 			}