hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hsu: call PCI pm hooks in suspend/resume function 

Also add check for dma controller or the uart ports.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Feng Tang 2010-07-27 08:20:52 +01:00 committed by Greg Kroah-Hartman
parent 06c77e21ae
commit 3c4108c82f
1 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/serial/mfd.c
View File

@ -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;
uart_suspend_port(&serial_hsu_reg, &up->port);
/* 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;
uart_resume_port(&serial_hsu_reg, &up->port);
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