diff options
| author | Soren Brinkmann <soren.brinkmann@xilinx.com> | 2014-05-05 00:42:59 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-05 23:11:18 +0200 |
| commit | 6a027b705fb6d2214647a638b44ea91ee6ce7e4c (patch) | |
| tree | 609a51fb8dfa3413b9e52d2ff65f8d777c5fb12b /drivers/net/ethernet/cadence/macb.c | |
| parent | net: macb: Pass same size to DMA_UNMAP as used for DMA_MAP (diff) | |
| download | linux-6a027b705fb6d2214647a638b44ea91ee6ce7e4c.tar.xz linux-6a027b705fb6d2214647a638b44ea91ee6ce7e4c.zip | |
net: macb: Clear interrupt flags
A few interrupt flags were not cleared in the ISR, resulting in a sytem
trapped in the ISR in cases one of those interrupts occurred. Clear all
flags to avoid such situations.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cadence/macb.c')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 18fdcd9d51b3..e38fe39d9589 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -951,6 +951,10 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) if (unlikely(status & (MACB_TX_ERR_FLAGS))) { macb_writel(bp, IDR, MACB_TX_INT_FLAGS); schedule_work(&bp->tx_error_task); + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_TX_ERR_FLAGS); + break; } @@ -968,6 +972,9 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) bp->hw_stats.gem.rx_overruns++; else bp->hw_stats.macb.rx_overruns++; + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_BIT(ISR_ROVR)); } if (status & MACB_BIT(HRESP)) { @@ -977,6 +984,9 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) * (work queue?) */ netdev_err(dev, "DMA bus error: HRESP not OK\n"); + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_BIT(HRESP)); } status = macb_readl(bp, ISR); |