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Date: Sat, 25 Sep 2010 11:57:02 +0200 From: Ondrej Zary <linux@...nbow-software.org> To: jgarzik@...ox.com Cc: netdev@...r.kernel.org, Kernel development list <linux-kernel@...r.kernel.org> Subject: de2104x: fix power management At least my 21041 cards come out of suspend with bus mastering disabled so they did not work after resume(no data transferred). After adding pci_set_master(), the driver oopsed immediately on resume - because de_clean_rings() is called on suspend but de_init_rings() call was missing in resume. Also disable link (reset SIA) before sleep (de4x5 does this too). Signed-off-by: Ondrej Zary <linux@...nbow-software.org> --- linux-2.6.36-rc3-/drivers/net/tulip/de2104x.c 2010-09-25 11:27:26.000000000 +0200 +++ linux-2.6.36-rc3/drivers/net/tulip/de2104x.c 2010-09-25 11:29:22.000000000 +0200 @@ -1231,6 +1231,7 @@ static void de_adapter_sleep (struct de_ if (de->de21040) return; + dw32(CSR13, 0); /* Reset phy */ pci_read_config_dword(de->pdev, PCIPM, &pmctl); pmctl |= PM_Sleep; pci_write_config_dword(de->pdev, PCIPM, pmctl); @@ -2166,6 +2167,8 @@ static int de_resume (struct pci_dev *pd dev_err(&dev->dev, "pci_enable_device failed in resume\n"); goto out; } + pci_set_master(pdev); + de_init_rings(de); de_init_hw(de); out_attach: netif_device_attach(dev); -- Ondrej Zary -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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