Re: [BUG] e100: eth0 appers many times in /proc/interrupts after resume

On Sun, Jan 21, 2007 at 01:45:27PM -0800, Auke Kok wrote:

Frederik Deweerdt wrote:

quoted

On Sun, Jan 21, 2007 at 09:17:41PM +0200, Andrei Popa wrote:

quoted

It's the 10th resume and in /proc/interrupts eth0 appers 10 times.

The e100_resume() function should be calling netif_device_detach and
free_irq. Could you try the following (compile tested) patch?

I just fixed suspend/shutdown for e100 in 2.6.19, not sure why the problem still shows up. Since it's a driver/net issue, you 
should CC netdev on it tho, otherwise it might go unnoticed.

Thanks for adding the CC

I'll open up the can-o-worms on this issue and see what's up with it.

I'm not so sure that this patch is OK, and I wonder why it stopped working, because I spent quite some time fixing it only a 
few months ago. Did swsup change again? sigh...

I may well be wrong (It appears that most of the time I am :)), but the
unbalanced netif_device_attach (in resume) looks suspicious.  resume()
also calls request_irq, so calling free_irq on suspend seemed logical.

Regards,
Frederik

Auke

quoted

Signed-off-by: Frederik Deweerdt <redacted>

diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 2fe0445..0c376e4 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c

@@ -2671,6 +2671,7 @@ static int e100_suspend(struct pci_dev *pdev, pm_message_t state)

	del_timer_sync(&nic->watchdog);
	netif_carrier_off(nic->netdev);
+	netif_device_detach(netdev);
	pci_save_state(pdev);
 	if ((nic->flags & wol_magic) | e100_asf(nic)) {

@@ -2682,6 +2683,7 @@ static int e100_suspend(struct pci_dev *pdev, pm_message_t state)

	}
 	pci_disable_device(pdev);
+	free_irq(pdev->irq, netdev);
	pci_set_power_state(pdev, PCI_D3hot);
 	return 0;
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