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| author | Michael Chan <mchan@broadcom.com> | 2007-07-08 07:51:03 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-11 07:18:35 +0200 |
| commit | b8a7ce7bedb2134acb731e08e588ad92087a40ff (patch) | |
| tree | 2d18138f5c9697f71861c37f94aa2e7cbfc5228b /drivers/net/bnx2.h | |
| parent | [BNX2]: Modify link up message. (diff) | |
| download | linux-b8a7ce7bedb2134acb731e08e588ad92087a40ff.tar.xz linux-b8a7ce7bedb2134acb731e08e588ad92087a40ff.zip | |
[BNX2]: Reduce spurious INTA interrupts.
Spurious interrupts are often encountered especially on systems
using the 8259 PIC mode. This is because the I/O write to deassert
the interrupt is posted and won't get to the chip immediately. As
a result, the IRQ may remain asserted after the IRQ handler exits,
causing spurious interrupts.
Add read back to flush the I/O write to deassert the IRQ immediately.
We also store the last_status_idx immediately in the IRQ handler to
help detect whether the interrupt is ours or not when the IRQ is
entered again before ->poll gets called.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2.h')
0 files changed, 0 insertions, 0 deletions