A possible faulty hardware might interrupt with a status of 0xffffffff which
may kernel panic if sky2 driver tries to handle it. Detecting this problem
may avoid kernel panic.
Signed-off-by: Samuel Williams <sam8...@gmail.com>
---
drivers/net/ethernet/marvell/sky2.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/sky2.c
b/drivers/net/ethernet/marvell/sky2.c
index e09a8c6..43fe2f3 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -3049,8 +3049,17 @@ static int sky2_poll(struct napi_struct *napi, int
work_limit)
int work_done = 0;
u16 idx;
- if (unlikely(status & Y2_IS_ERROR))
+ if (unlikely(status & Y2_IS_ERROR)) {
+ if (status == 0xFFFFFFFF) {
+ dev_err(&hw->pdev->dev,
+ "fatal hardware inturrupt error\n");
+ napi_complete(napi);
+ napi_disable(&hw->napi);
+ return 0;
+ }
sky2_err_intr(hw, status);
+ }
+
if (status & Y2_IS_IRQ_PHY1)
sky2_phy_intr(hw, 0);
--
1.7.10.4
--
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