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Ath5k: suspend/resume fixes

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- free and re-request irq since it might have changed during suspend
- disable and enable msi
- don't set D0 state of the device, it's already done by the PCI layer
- do restore_state before enable_device, it's safer
- check ath5k_init return value

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Cc: Luis R. Rodriguez <mcgrof@gmail.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jiri Slaby 2008-07-15 17:44:21 +02:00 committed by John W. Linville
parent e86600c7b4
commit 3e4242b99c
1 changed files with 21 additions and 5 deletions
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26
drivers/net/wireless/ath5k/base.c
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@ -592,6 +592,9 @@ ath5k_pci_suspend(struct pci_dev *pdev, pm_message_t state)
ath5k_led_off(sc);
ath5k_stop_hw(sc);
free_irq(pdev->irq, sc);
pci_disable_msi(pdev);
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
@ -607,15 +610,12 @@ ath5k_pci_resume(struct pci_dev *pdev)
struct ath5k_hw *ah = sc->ah;
int i, err;
err = pci_set_power_state(pdev, PCI_D0);
if (err)
return err;
pci_restore_state(pdev);
err = pci_enable_device(pdev);
if (err)
return err;
pci_restore_state(pdev);
/*
* Suspend/Resume resets the PCI configuration space, so we have to
* re-disable the RETRY_TIMEOUT register (0x41) to keep
@ -623,7 +623,17 @@ ath5k_pci_resume(struct pci_dev *pdev)
*/
pci_write_config_byte(pdev, 0x41, 0);
ath5k_init(sc);
pci_enable_msi(pdev);
err = request_irq(pdev->irq, ath5k_intr, IRQF_SHARED, "ath", sc);
if (err) {
ATH5K_ERR(sc, "request_irq failed\n");
goto err_msi;
}
err = ath5k_init(sc);
if (err)
goto err_irq;
ath5k_led_enable(sc);
/*
@ -637,6 +647,12 @@ ath5k_pci_resume(struct pci_dev *pdev)
ath5k_hw_reset_key(ah, i);
return 0;
err_irq:
free_irq(pdev->irq, sc);
err_msi:
pci_disable_msi(pdev);
pci_disable_device(pdev);
return err;
}
#endif /* CONFIG_PM */