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GRETH: handle frame error interrupts

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Frame error interrupts must also be handled since the RX flag only indicates
successful reception, it is unlikely but the old code may lead to dead lock
if 128 error frames are recieved in a row.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom
2011-01-14 03:02:42 +00:00
committed by David S. Miller
parent 2436af8ca7
commit 1ca23434dd
2 changed files with 7 additions and 4 deletions
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9
drivers/net/greth.c
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@@ -586,12 +586,13 @@ static irqreturn_t greth_interrupt(int irq, void *dev_id)
status = GRETH_REGLOAD(greth->regs->status);
/* Handle rx and tx interrupts through poll */
if (status & (GRETH_INT_RX | GRETH_INT_TX)) {
if (status & (GRETH_INT_RE | GRETH_INT_RX |
GRETH_INT_TE | GRETH_INT_TX)) {
/* Clear interrupt status */
GRETH_REGORIN(greth->regs->status,
status & (GRETH_INT_RX | GRETH_INT_TX));
GRETH_REGSAVE(greth->regs->status,
status & (GRETH_INT_RE | GRETH_INT_RX |
GRETH_INT_TE | GRETH_INT_TX));
retval = IRQ_HANDLED;
/* Disable interrupts and schedule poll() */