[PATCH] net,via-rhine: Fix tx_timeout handling

From: Richard Weinberger
Date: Tue Jan 14 2014 - 16:46:51 EST


rhine_reset_task() misses to disable the tx scheduler upon reset,
this can lead to a crash if work is still scheduled while we're resetting
the tx queue.

Fixes:
[ 93.591707] BUG: unable to handle kernel NULL pointer dereference at 0000004c
[ 93.595514] IP: [<c119d10d>] rhine_napipoll+0x491/0x6

Signed-off-by: Richard Weinberger <richard@xxxxxx>
---
drivers/net/ethernet/via/via-rhine.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
index cce6c4b..ef312bc 100644
--- a/drivers/net/ethernet/via/via-rhine.c
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -1618,6 +1618,7 @@ static void rhine_reset_task(struct work_struct *work)
goto out_unlock;

napi_disable(&rp->napi);
+ netif_tx_disable(dev);
spin_lock_bh(&rp->lock);

/* clear all descriptors */
--
1.8.4.2

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