path: root/drivers/net/s2io.c
diff options
authorDavid S. Miller <davem@davemloft.net>2011-04-11 16:00:00 -0700
committerDavid S. Miller <davem@davemloft.net>2011-04-12 11:21:30 -0700
commitd83d282bcbf24ec8ddd4f0eb57f7ad302c431b8a (patch)
treed70019b7c94d333c84ce3610186c8cff23b635d2 /drivers/net/s2io.c
parentniu: Fix warnings due to -Wunused-but-set-variable (diff)
s2io: Fix warnings due to -Wunused-but-set-variable.
Most of these are cases where we are trying to read back a register after a write to ensure completion. Simply pre-fixing the readl() or readq() with "(void)" is sufficient because these are volatile operations and the compiler cannot eliminate them just because no real assignment takes place. The case of free_rxd_blk()'s assignments to "struct buffAdd *ba" is a real spurious assignment as this variable is completely otherwise unused. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/net/s2io.c')
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index ca8e75e9a7ee..2d5cc6142c04 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -2244,13 +2244,12 @@ static int verify_xena_quiescence(struct s2io_nic *sp)
static void fix_mac_address(struct s2io_nic *sp)
struct XENA_dev_config __iomem *bar0 = sp->bar0;
- u64 val64;
int i = 0;
while (fix_mac[i] != END_SIGN) {
writeq(fix_mac[i++], &bar0->gpio_control);
- val64 = readq(&bar0->gpio_control);
+ (void) readq(&bar0->gpio_control);
@@ -2727,7 +2726,6 @@ static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
int j;
struct sk_buff *skb;
struct RxD_t *rxdp;
- struct buffAdd *ba;
struct RxD1 *rxdp1;
struct RxD3 *rxdp3;
struct mac_info *mac_control = &sp->mac_control;
@@ -2751,7 +2749,6 @@ static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
memset(rxdp, 0, sizeof(struct RxD1));
} else if (sp->rxd_mode == RXD_MODE_3B) {
rxdp3 = (struct RxD3 *)rxdp;
- ba = &mac_control->rings[ring_no].ba[blk][j];