Hi Jeff:
I will follow those suggestions. Thanks.
Jesse
----- Original Message -----
From: "Jeff Garzik" <[email protected]>
To: "Jesse Huang" <[email protected]>
Cc: <[email protected]>; <[email protected]>;
<[email protected]>
Sent: Friday, August 18, 2006 7:17 PM
Subject: Re: [PATCH 6/6] IP100A Solve host error problem when in low
performance embedded
Jesse Huang wrote:
> From: Jesse Huang <[email protected]>
>
> Solve host error problem when in low performance embedded
>
> Change Logs:
> Solve host error problem when in low performance embedded
>
> ---
>
> drivers/net/sundance.c | 26 ++++++++++++++++++++++----
> 1 files changed, 22 insertions(+), 4 deletions(-)
>
> 78ff57ea887c19b7552342e990375f5e2bb10af9
> diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
> index c7c22f0..94ba6ca 100755
> --- a/drivers/net/sundance.c
> +++ b/drivers/net/sundance.c
> @@ -1075,7 +1075,7 @@ reset_tx (struct net_device *dev)
> struct sk_buff *skb;
> int i;
> int irq = in_interrupt();
> -
> + tasklet_kill(&np->tx_tasklet);
NAK, it is a bug to call tasklet_kill() from inside an interrupt.
> @@ -1646,6 +1646,13 @@ static int netdev_close(struct net_devic
> struct sk_buff *skb;
> int i;
>
> + /* Wait and kill tasklet */
> + tasklet_kill(&np->rx_tasklet);
> + tasklet_kill(&np->tx_tasklet);
> + np->cur_tx = np->dirty_tx = 0;
fix source code indent
> + np->cur_task = 0;
> + np->last_tx=0;
needs whitespace: s/=/ = /
> netif_stop_queue(dev);
>
> if (netif_msg_ifdown(np)) {
> @@ -1666,9 +1673,19 @@ static int netdev_close(struct net_devic
> /* Stop the chip's Tx and Rx processes. */
> iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
>
> - /* Wait and kill tasklet */
> - tasklet_kill(&np->rx_tasklet);
> - tasklet_kill(&np->tx_tasklet);
> + for(i=2000;i> 0;i--) {
> + if((readl(ioaddr + DMACtrl)&0xC000) == 0)break;
> + mdelay(1);
> + }
(1) fix indentation
(2) add whitespace to 'for' loop
(3) use ioread32(), not readl()
(4) are you certain that DMACtrl should be read as a 32-bit register?
In other code, you treat it as a 16-bit register.
> + writew(GlobalReset | DMAReset | FIFOReset |NetworkReset, ioaddr
+ASICCtrl + 2);
(5) use iowrite16() not writew()
> + for(i=2000;i >0;i--)
> + {
> + if((readw(ioaddr + ASICCtrl +2)&ResetBusy) == 0)
> + break;
> + mdelay(1);
> + }
(6) fix indentation to match the rest of the driver
(7) use ioread16(), not readw()
(8) add whitespace to 'for' loop
> #ifdef __i386__
> if (netif_msg_hw(np)) {
> @@ -1706,6 +1723,7 @@ #endif /* __i386__ debugging only */
> }
> }
> for (i = 0; i < TX_RING_SIZE; i++) {
> + np->tx_ring[i].next_desc=0;
(9) add whitespace to assignment: s/=/ = /
> skb = np->tx_skbuff[i];
> if (skb) {
> pci_unmap_single(np->pci_dev,
-
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