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KS8695: fix ks8695_rx() unreasonable action. 

ks8695_rx() will call refill_buffers() for every incoming packet.
Its not necessary. We just need do it after finishing receiving thing.
And the 'RX dma engine' is in the same situation.
This blocks our user space application. The following patch may fix it.

Signed-off-by: zeal <zealcook@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
zeal 2009-11-16 04:58:10 +00:00 committed by David S. Miller
parent fa6cae143d
commit 5c427ff9e4
1 changed files with 6 additions and 7 deletions
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13
drivers/net/arm/ks8695net.c
View File

@ -544,14 +544,13 @@ rx_finished:
ksp->next_rx_desc_read =
(last_rx_processed + 1) &
MAX_RX_DESC_MASK;
/* And refill the buffers */
ks8695_refill_rxbuffers(ksp);
/* Kick the RX DMA engine, in case it became
* suspended */
ks8695_writereg(ksp, KS8695_DRSC, 0);
}
/* And refill the buffers */
ks8695_refill_rxbuffers(ksp);
/* Kick the RX DMA engine, in case it became
* suspended */
ks8695_writereg(ksp, KS8695_DRSC, 0);
return received;
}