diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/smc91x.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c index c91e2e81f13..1021108e9a2 100644 --- a/drivers/net/smc91x.c +++ b/drivers/net/smc91x.c @@ -155,6 +155,12 @@ MODULE_LICENSE("GPL"); #define MEMORY_WAIT_TIME 16 /* + * The maximum number of processing loops allowed for each call to the + * IRQ handler. + */ +#define MAX_IRQ_LOOPS 8 + +/* * This selects whether TX packets are sent one by one to the SMC91x internal * memory and throttled until transmission completes. This may prevent * RX overruns a litle by keeping much of the memory free for RX packets @@ -684,7 +690,6 @@ static void smc_hardware_send_pkt(unsigned long data) /* queue the packet for TX */ SMC_SET_MMU_CMD(MC_ENQUEUE); - SMC_ACK_INT(IM_TX_EMPTY_INT); smc_special_unlock(&lp->lock); dev->trans_start = jiffies; @@ -1305,7 +1310,7 @@ static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs) SMC_SET_INT_MASK(0); /* set a timeout value, so I don't stay here forever */ - timeout = 8; + timeout = MAX_IRQ_LOOPS; do { status = SMC_GET_INT(); @@ -1372,10 +1377,13 @@ static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs) /* restore register states */ SMC_SET_PTR(saved_pointer); SMC_SET_INT_MASK(mask); - spin_unlock(&lp->lock); - DBG(3, "%s: Interrupt done (%d loops)\n", dev->name, 8-timeout); + if (timeout == MAX_IRQ_LOOPS) + PRINTK("%s: spurious interrupt (mask = 0x%02x)\n", + dev->name, mask); + DBG(3, "%s: Interrupt done (%d loops)\n", + dev->name, MAX_IRQ_LOOPS - timeout); /* * We return IRQ_HANDLED unconditionally here even if there was |