From f4d9605434c0fd4cc8639bf25cfc043418c52362 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 14 Feb 2013 11:49:01 -0800 Subject: [PATCH] sunvdc: Fix off-by-one in generic_request(). The 'operations' bitmap corresponds one-for-one with the operation codes, no adjustment is necessary. Reported-by: Mark Kettenis Signed-off-by: David S. Miller --- drivers/block/sunvdc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c index 564156a8e57..5814deb6963 100644 --- a/drivers/block/sunvdc.c +++ b/drivers/block/sunvdc.c @@ -461,7 +461,7 @@ static int generic_request(struct vdc_port *port, u8 op, void *buf, int len) int op_len, err; void *req_buf; - if (!(((u64)1 << ((u64)op - 1)) & port->operations)) + if (!(((u64)1 << (u64)op) & port->operations)) return -EOPNOTSUPP; switch (op) {