Commit 3c4108c8 authored by Feng Tang's avatar Feng Tang Committed by Greg Kroah-Hartman
Browse files

hsu: call PCI pm hooks in suspend/resume function 



Also add check for dma controller or the uart ports.

Signed-off-by: default avatarFeng Tang <feng.tang@intel.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 06c77e21

drivers/serial/mfd.c

+22 −9
Original line number Diff line number Diff line
@@ -1217,25 +1217,38 @@ static struct uart_driver serial_hsu_reg = { 
#ifdef CONFIG_PM

static int serial_hsu_suspend(struct pci_dev *pdev, pm_message_t state)

{

	void *priv = pci_get_drvdata(pdev);

	struct uart_hsu_port *up;



	up = pci_get_drvdata(pdev);

	if (!up)

		return 0;



	/* Make sure this is not the internal dma controller */

	if (priv && (pdev->device != 0x081E)) {

		up = priv;

		uart_suspend_port(&serial_hsu_reg, &up->port);

	}



	pci_save_state(pdev);

	pci_set_power_state(pdev, pci_choose_state(pdev, state));

        return 0;

}



static int serial_hsu_resume(struct pci_dev *pdev)

{

	void *priv = pci_get_drvdata(pdev);

	struct uart_hsu_port *up;

	int ret;



	up = pci_get_drvdata(pdev);

	if (!up)

		return 0;

	pci_set_power_state(pdev, PCI_D0);

	pci_restore_state(pdev);



	ret = pci_enable_device(pdev);

	if (ret)

		dev_warn(&pdev->dev,

			"HSU: can't re-enable device, try to continue\n");



	if (priv && (pdev->device != 0x081E)) {

		up = priv;

		uart_resume_port(&serial_hsu_reg, &up->port);

	}

	return 0;

}

#else