diff options
Diffstat (limited to 'target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch')
| -rw-r--r-- | target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch | 45 |
1 files changed, 28 insertions, 17 deletions
diff --git a/target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch b/target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch index 423b204aa0..ed03db069e 100644 --- a/target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch +++ b/target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch @@ -11,7 +11,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c -@@ -545,18 +545,26 @@ static void bgmac_dma_ring_desc_free(str +@@ -562,18 +562,26 @@ static void bgmac_dma_ring_desc_free(str ring->dma_base); } @@ -44,7 +44,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> } static int bgmac_dma_alloc(struct bgmac *bgmac) -@@ -604,8 +612,6 @@ static int bgmac_dma_alloc(struct bgmac +@@ -621,8 +629,6 @@ static int bgmac_dma_alloc(struct bgmac } for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { @@ -53,7 +53,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> ring = &bgmac->rx_ring[i]; ring->num_slots = BGMAC_RX_RING_SLOTS; ring->mmio_base = ring_base[i]; -@@ -628,15 +634,6 @@ static int bgmac_dma_alloc(struct bgmac +@@ -645,15 +651,6 @@ static int bgmac_dma_alloc(struct bgmac ring->index_base = lower_32_bits(ring->dma_base); else ring->index_base = 0; @@ -69,7 +69,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> } return 0; -@@ -646,10 +643,10 @@ err_dma_free: +@@ -663,10 +660,10 @@ err_dma_free: return -ENOMEM; } @@ -82,7 +82,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) { ring = &bgmac->tx_ring[i]; -@@ -681,8 +678,13 @@ static void bgmac_dma_init(struct bgmac +@@ -698,8 +695,13 @@ static void bgmac_dma_init(struct bgmac if (ring->unaligned) bgmac_dma_rx_enable(bgmac, ring); @@ -90,23 +90,27 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> + for (j = 0; j < ring->num_slots; j++) { + err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]); + if (err) -+ return err; ++ goto error; + bgmac_dma_rx_setup_desc(bgmac, ring, j); + } bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX, ring->index_base + -@@ -691,6 +693,8 @@ static void bgmac_dma_init(struct bgmac +@@ -708,6 +710,12 @@ static void bgmac_dma_init(struct bgmac ring->start = 0; ring->end = 0; } + + return 0; ++ ++error: ++ bgmac_dma_cleanup(bgmac); ++ return err; } /************************************************** -@@ -1166,11 +1170,8 @@ static void bgmac_enable(struct bgmac *b +@@ -1183,11 +1191,8 @@ static void bgmac_enable(struct bgmac *b } /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */ @@ -119,7 +123,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> /* 1 interrupt per received frame */ bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT); -@@ -1188,16 +1189,7 @@ static void bgmac_chip_init(struct bgmac +@@ -1205,16 +1210,7 @@ static void bgmac_chip_init(struct bgmac bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN); @@ -137,14 +141,14 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> bgmac_enable(bgmac); } -@@ -1257,8 +1249,13 @@ static int bgmac_open(struct net_device +@@ -1274,23 +1270,27 @@ static int bgmac_open(struct net_device int err = 0; bgmac_chip_reset(bgmac); + + err = bgmac_dma_init(bgmac); + if (err) -+ goto err_out; ++ return err; + /* Specs say about reclaiming rings here, but we do that in DMA init */ - bgmac_chip_init(bgmac, true); @@ -152,18 +156,25 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org> err = request_irq(bgmac->core->irq, bgmac_interrupt, IRQF_SHARED, KBUILD_MODNAME, net_dev); -@@ -1271,8 +1268,10 @@ static int bgmac_open(struct net_device + if (err < 0) { + bgmac_err(bgmac, "IRQ request error: %d!\n", err); +- goto err_out; ++ bgmac_dma_cleanup(bgmac); ++ return err; + } + napi_enable(&bgmac->napi); + phy_start(bgmac->phy_dev); netif_carrier_on(net_dev); +- +-err_out: +- return err; + return 0; - - err_out: -+ bgmac_dma_cleanup(bgmac); - return err; } -@@ -1289,6 +1288,7 @@ static int bgmac_stop(struct net_device + static int bgmac_stop(struct net_device *net_dev) +@@ -1306,6 +1306,7 @@ static int bgmac_stop(struct net_device free_irq(bgmac->core->irq, net_dev); bgmac_chip_reset(bgmac); |