In addition to the value of GHIINT0STS, spidernet interrupt handler
should check the values of GHIINT1STS/GHIINT2STS registers at the
beginning of spider_net_interrupt() so as not to drop error
interrupts.
GHIINT1STS/GHIINT2STS registers indicates some of erroneous conditions
in spidernet, and a few bits of GHIINT0STS register reflects these
conditions. But GHIINT0MSK masks these bits, so you should check these
conditions by reading GHIINT1STS/GHIINT2STS registers directly.
Signed-off-by: Kou Ishizaki <[EMAIL PROTECTED]>
---
Index: linux-powerpc-git/drivers/net/spider_net.c
===================================================================
--- linux-powerpc-git.orig/drivers/net/spider_net.c
+++ linux-powerpc-git/drivers/net/spider_net.c
@@ -1415,18 +1415,12 @@ spider_net_link_reset(struct net_device
* found when an interrupt is presented
*/
static void
-spider_net_handle_error_irq(struct spider_net_card *card, u32 status_reg)
+spider_net_handle_error_irq(struct spider_net_card *card, u32 status_reg,
+ u32 error_reg1, u32 error_reg2)
{
- u32 error_reg1, error_reg2;
u32 i;
int show_error = 1;
- error_reg1 = spider_net_read_reg(card, SPIDER_NET_GHIINT1STS);
- error_reg2 = spider_net_read_reg(card, SPIDER_NET_GHIINT2STS);
-
- error_reg1 &= SPIDER_NET_INT1_MASK_VALUE;
- error_reg2 &= SPIDER_NET_INT2_MASK_VALUE;
-
/* check GHIINT0STS ************************************/
if (status_reg)
for (i = 0; i < 32; i++)
@@ -1656,12 +1650,15 @@ spider_net_interrupt(int irq, void *ptr)
{
struct net_device *netdev = ptr;
struct spider_net_card *card = netdev_priv(netdev);
- u32 status_reg;
+ u32 status_reg, error_reg1, error_reg2;
status_reg = spider_net_read_reg(card, SPIDER_NET_GHIINT0STS);
- status_reg &= SPIDER_NET_INT0_MASK_VALUE;
+ error_reg1 = spider_net_read_reg(card, SPIDER_NET_GHIINT1STS);
+ error_reg2 = spider_net_read_reg(card, SPIDER_NET_GHIINT2STS);
- if (!status_reg)
+ if (!(status_reg & SPIDER_NET_INT0_MASK_VALUE) &&
+ !(error_reg1 & SPIDER_NET_INT1_MASK_VALUE) &&
+ !(error_reg2 & SPIDER_NET_INT2_MASK_VALUE))
return IRQ_NONE;
if (status_reg & SPIDER_NET_RXINT ) {
@@ -1676,7 +1673,8 @@ spider_net_interrupt(int irq, void *ptr)
spider_net_link_reset(netdev);
if (status_reg & SPIDER_NET_ERRINT )
- spider_net_handle_error_irq(card, status_reg);
+ spider_net_handle_error_irq(card, status_reg,
+ error_reg1, error_reg2);
/* clear interrupt sources */
spider_net_write_reg(card, SPIDER_NET_GHIINT0STS, status_reg);
--
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