s390/qdio: remove always-true condition

buf_in_between() gets passed q->u.in.ack_start as 'bufnr' parameter. The ack_start always ranges between 0 and QDIO_MAX_BUFFERS_PER_Q - 1, so the subsequent check will always return true. Remove it. Signed-off-by: Julian Wiedmann <[email protected]> Reviewed-by: Benjamin Block <[email protected]> Signed-off-by: Vasily Gorbik <[email protected]>
majek · Apr 28, 2020 · 19d4c76 · 19d4c76
1 parent 9b7012d
commit 19d4c76
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
@@ -1450,8 +1450,7 @@ static inline int buf_in_between(int bufnr, int start, int count)
 	}
 
 	/* wrap-around case */
-	if ((bufnr >= start && bufnr <= QDIO_MAX_BUFFERS_PER_Q) ||
-	    (bufnr < end))
+	if (bufnr >= start || bufnr < end)
 		return 1;
 	else
 		return 0;