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authorRafał Miłecki <zajec5@gmail.com>2013-02-25 08:22:26 +0000
committerDavid S. Miller <davem@davemloft.net>2013-02-25 15:47:41 -0500
commit70a737b795d1d2fa0c1b54b8b7870c86cedd03ac (patch)
tree12cd5ccb6317cf8e328c184c2328eedf91eb1832
parent63a02ce1c5c59baa40b99756492e3ec8d6b51483 (diff)
bgmac: fix indexing of 2nd level loops
We were using the same variable for iterating two nested loops. Reported-by: Tijs Van Buggenhout <tvb@able.be> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/broadcom/bgmac.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 3fd32880e52..bf985c04524 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -436,6 +436,8 @@ static int bgmac_dma_alloc(struct bgmac *bgmac)
}
for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
+ int j;
+
ring = &bgmac->rx_ring[i];
ring->num_slots = BGMAC_RX_RING_SLOTS;
ring->mmio_base = ring_base[i];
@@ -458,8 +460,8 @@ static int bgmac_dma_alloc(struct bgmac *bgmac)
bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
/* Alloc RX slots */
- for (i = 0; i < ring->num_slots; i++) {
- err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[i]);
+ for (j = 0; j < ring->num_slots; j++) {
+ err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]);
if (err) {
bgmac_err(bgmac, "Can't allocate skb for slot in RX ring\n");
goto err_dma_free;
@@ -496,6 +498,8 @@ static void bgmac_dma_init(struct bgmac *bgmac)
}
for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
+ int j;
+
ring = &bgmac->rx_ring[i];
/* We don't implement unaligned addressing, so enable first */
@@ -505,11 +509,11 @@ static void bgmac_dma_init(struct bgmac *bgmac)
bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI,
upper_32_bits(ring->dma_base));
- for (i = 0, dma_desc = ring->cpu_base; i < ring->num_slots;
- i++, dma_desc++) {
+ for (j = 0, dma_desc = ring->cpu_base; j < ring->num_slots;
+ j++, dma_desc++) {
ctl0 = ctl1 = 0;
- if (i == ring->num_slots - 1)
+ if (j == ring->num_slots - 1)
ctl0 |= BGMAC_DESC_CTL0_EOT;
ctl1 |= BGMAC_RX_BUF_SIZE & BGMAC_DESC_CTL1_LEN;
/* Is there any BGMAC device that requires extension? */
@@ -517,8 +521,8 @@ static void bgmac_dma_init(struct bgmac *bgmac)
* B43_DMA64_DCTL1_ADDREXT_MASK;
*/
- dma_desc->addr_low = cpu_to_le32(lower_32_bits(ring->slots[i].dma_addr));
- dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[i].dma_addr));
+ dma_desc->addr_low = cpu_to_le32(lower_32_bits(ring->slots[j].dma_addr));
+ dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[j].dma_addr));
dma_desc->ctl0 = cpu_to_le32(ctl0);
dma_desc->ctl1 = cpu_to_le32(ctl1);
}