From 25985edcedea6396277003854657b5f3cb31a628 Mon Sep 17 00:00:00 2001 From: Lucas De Marchi Date: Wed, 30 Mar 2011 22:57:33 -0300 Subject: Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi --- drivers/net/stmmac/norm_desc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/stmmac') diff --git a/drivers/net/stmmac/norm_desc.c b/drivers/net/stmmac/norm_desc.c index cd0cc76f7a1c..029c2a2cf524 100644 --- a/drivers/net/stmmac/norm_desc.c +++ b/drivers/net/stmmac/norm_desc.c @@ -67,7 +67,7 @@ static int ndesc_get_tx_len(struct dma_desc *p) /* This function verifies if each incoming frame has some errors * and, if required, updates the multicast statistics. - * In case of success, it returns csum_none becasue the device + * In case of success, it returns csum_none because the device * is not able to compute the csum in HW. */ static int ndesc_get_rx_status(void *data, struct stmmac_extra_stats *x, struct dma_desc *p) -- cgit v1.2.3 From bded18c2dd09eee870f4446652dbce493a6dece1 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Sun, 10 Apr 2011 23:16:44 +0000 Subject: stmmac: fixed dma lib build when turn-on the debug option This patch fixes a compilation error when build the dwmac_lib with the DEBUG option enabled. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/stmmac/dwmac_lib.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'drivers/net/stmmac') diff --git a/drivers/net/stmmac/dwmac_lib.c b/drivers/net/stmmac/dwmac_lib.c index d65fab1ba790..e25093510b0c 100644 --- a/drivers/net/stmmac/dwmac_lib.c +++ b/drivers/net/stmmac/dwmac_lib.c @@ -26,9 +26,9 @@ #undef DWMAC_DMA_DEBUG #ifdef DWMAC_DMA_DEBUG -#define DBG(fmt, args...) printk(fmt, ## args) +#define DWMAC_LIB_DBG(fmt, args...) printk(fmt, ## args) #else -#define DBG(fmt, args...) do { } while (0) +#define DWMAC_LIB_DBG(fmt, args...) do { } while (0) #endif /* CSR1 enables the transmit DMA to check for new descriptor */ @@ -152,7 +152,7 @@ int dwmac_dma_interrupt(void __iomem *ioaddr, /* read the status register (CSR5) */ u32 intr_status = readl(ioaddr + DMA_STATUS); - DBG(INFO, "%s: [CSR5: 0x%08x]\n", __func__, intr_status); + DWMAC_LIB_DBG(KERN_INFO "%s: [CSR5: 0x%08x]\n", __func__, intr_status); #ifdef DWMAC_DMA_DEBUG /* It displays the DMA process states (CSR5 register) */ show_tx_process_state(intr_status); @@ -160,43 +160,43 @@ int dwmac_dma_interrupt(void __iomem *ioaddr, #endif /* ABNORMAL interrupts */ if (unlikely(intr_status & DMA_STATUS_AIS)) { - DBG(INFO, "CSR5[15] DMA ABNORMAL IRQ: "); + DWMAC_LIB_DBG(KERN_INFO "CSR5[15] DMA ABNORMAL IRQ: "); if (unlikely(intr_status & DMA_STATUS_UNF)) { - DBG(INFO, "transmit underflow\n"); + DWMAC_LIB_DBG(KERN_INFO "transmit underflow\n"); ret = tx_hard_error_bump_tc; x->tx_undeflow_irq++; } if (unlikely(intr_status & DMA_STATUS_TJT)) { - DBG(INFO, "transmit jabber\n"); + DWMAC_LIB_DBG(KERN_INFO "transmit jabber\n"); x->tx_jabber_irq++; } if (unlikely(intr_status & DMA_STATUS_OVF)) { - DBG(INFO, "recv overflow\n"); + DWMAC_LIB_DBG(KERN_INFO "recv overflow\n"); x->rx_overflow_irq++; } if (unlikely(intr_status & DMA_STATUS_RU)) { - DBG(INFO, "receive buffer unavailable\n"); + DWMAC_LIB_DBG(KERN_INFO "receive buffer unavailable\n"); x->rx_buf_unav_irq++; } if (unlikely(intr_status & DMA_STATUS_RPS)) { - DBG(INFO, "receive process stopped\n"); + DWMAC_LIB_DBG(KERN_INFO "receive process stopped\n"); x->rx_process_stopped_irq++; } if (unlikely(intr_status & DMA_STATUS_RWT)) { - DBG(INFO, "receive watchdog\n"); + DWMAC_LIB_DBG(KERN_INFO "receive watchdog\n"); x->rx_watchdog_irq++; } if (unlikely(intr_status & DMA_STATUS_ETI)) { - DBG(INFO, "transmit early interrupt\n"); + DWMAC_LIB_DBG(KERN_INFO "transmit early interrupt\n"); x->tx_early_irq++; } if (unlikely(intr_status & DMA_STATUS_TPS)) { - DBG(INFO, "transmit process stopped\n"); + DWMAC_LIB_DBG(KERN_INFO "transmit process stopped\n"); x->tx_process_stopped_irq++; ret = tx_hard_error; } if (unlikely(intr_status & DMA_STATUS_FBI)) { - DBG(INFO, "fatal bus error\n"); + DWMAC_LIB_DBG(KERN_INFO "fatal bus error\n"); x->fatal_bus_error_irq++; ret = tx_hard_error; } @@ -215,7 +215,7 @@ int dwmac_dma_interrupt(void __iomem *ioaddr, /* Clear the interrupt by writing a logic 1 to the CSR5[15-0] */ writel((intr_status & 0x1ffff), ioaddr + DMA_STATUS); - DBG(INFO, "\n\n"); + DWMAC_LIB_DBG(KERN_INFO "\n\n"); return ret; } -- cgit v1.2.3 From f66ffe285939559d2a6f630a36f676d7c056b99d Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Sun, 10 Apr 2011 23:16:45 +0000 Subject: stmmac: fix open funct when exit on error This patch reviews the open function and fixes some errors when exit with an error state. It also moves the request_irq after core is initialized when interrupts are properly masked. Signed-off-by: Shiraz Hashim Hacked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/stmmac/stmmac_main.c | 48 +++++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 20 deletions(-) (limited to 'drivers/net/stmmac') diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c index 0e5f03135b50..38f7b619c44c 100644 --- a/drivers/net/stmmac/stmmac_main.c +++ b/drivers/net/stmmac/stmmac_main.c @@ -781,21 +781,6 @@ static int stmmac_open(struct net_device *dev) stmmac_verify_args(); - ret = stmmac_init_phy(dev); - if (unlikely(ret)) { - pr_err("%s: Cannot attach to PHY (error: %d)\n", __func__, ret); - return ret; - } - - /* Request the IRQ lines */ - ret = request_irq(dev->irq, stmmac_interrupt, - IRQF_SHARED, dev->name, dev); - if (unlikely(ret < 0)) { - pr_err("%s: ERROR: allocating the IRQ %d (error: %d)\n", - __func__, dev->irq, ret); - return ret; - } - #ifdef CONFIG_STMMAC_TIMER priv->tm = kzalloc(sizeof(struct stmmac_timer *), GFP_KERNEL); if (unlikely(priv->tm == NULL)) { @@ -814,6 +799,11 @@ static int stmmac_open(struct net_device *dev) } else priv->tm->enable = 1; #endif + ret = stmmac_init_phy(dev); + if (unlikely(ret)) { + pr_err("%s: Cannot attach to PHY (error: %d)\n", __func__, ret); + goto open_error; + } /* Create and initialize the TX/RX descriptors chains. */ priv->dma_tx_size = STMMAC_ALIGN(dma_txsize); @@ -822,12 +812,11 @@ static int stmmac_open(struct net_device *dev) init_dma_desc_rings(dev); /* DMA initialization and SW reset */ - if (unlikely(priv->hw->dma->init(priv->ioaddr, priv->plat->pbl, - priv->dma_tx_phy, - priv->dma_rx_phy) < 0)) { - + ret = priv->hw->dma->init(priv->ioaddr, priv->plat->pbl, + priv->dma_tx_phy, priv->dma_rx_phy); + if (ret < 0) { pr_err("%s: DMA initialization failed\n", __func__); - return -1; + goto open_error; } /* Copy the MAC addr into the HW */ @@ -848,6 +837,15 @@ static int stmmac_open(struct net_device *dev) writel(0xffffffff, priv->ioaddr + MMC_HIGH_INTR_MASK); writel(0xffffffff, priv->ioaddr + MMC_LOW_INTR_MASK); + /* Request the IRQ lines */ + ret = request_irq(dev->irq, stmmac_interrupt, + IRQF_SHARED, dev->name, dev); + if (unlikely(ret < 0)) { + pr_err("%s: ERROR: allocating the IRQ %d (error: %d)\n", + __func__, dev->irq, ret); + goto open_error; + } + /* Enable the MAC Rx/Tx */ stmmac_enable_mac(priv->ioaddr); @@ -878,7 +876,17 @@ static int stmmac_open(struct net_device *dev) napi_enable(&priv->napi); skb_queue_head_init(&priv->rx_recycle); netif_start_queue(dev); + return 0; + +open_error: +#ifdef CONFIG_STMMAC_TIMER + kfree(priv->tm); +#endif + if (priv->phydev) + phy_disconnect(priv->phydev); + + return ret; } /** -- cgit v1.2.3 From a08070acd43a76069ab20000cd02474369506add Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Sun, 10 Apr 2011 23:16:46 +0000 Subject: stmmac: fix Transmit Underflow error On some old MAC chips without COE sometime the Transmit Underflow error is issued. The driver aborted all the transmission process and initialized it from scratch. This breaks the network activity as raised by Nachiketa on a SPEAr board. The patch is to fix this rare underflow event. The driver will only clear the interrupt and the Tx DMA will go out the Suspend state as soon as the descriptor is fetched again. The driver will continue to bump-up the DMA FIFO threshold that, indeed, helped somebody to prevent this kind of error in the past as well. Reported-by: Nachiketa Prachanda Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/stmmac/stmmac_main.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/net/stmmac') diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c index 38f7b619c44c..cc973fc38405 100644 --- a/drivers/net/stmmac/stmmac_main.c +++ b/drivers/net/stmmac/stmmac_main.c @@ -750,7 +750,6 @@ static void stmmac_dma_interrupt(struct stmmac_priv *priv) priv->hw->dma->dma_mode(priv->ioaddr, tc, SF_DMA_MODE); priv->xstats.threshold = tc; } - stmmac_tx_err(priv); } else if (unlikely(status == tx_hard_error)) stmmac_tx_err(priv); } -- cgit v1.2.3