diff options
| author | Feng Tang <feng.tang@intel.com> | 2010-07-27 08:20:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 13:47:46 -0700 |
| commit | 3c4108c82f7769fcd265dc77a5bb0c6d8bcea25f (patch) | |
| tree | 9b5c09318f884a7ba279d4da63551098ecba69a2 /drivers/serial | |
| parent | 06c77e21ae7c199435097116b8212b0761fc8ba8 (diff) | |
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>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/mfd.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/drivers/serial/mfd.c b/drivers/serial/mfd.c index f5e7569c177..bc9af503907 100644 --- a/drivers/serial/mfd.c +++ b/drivers/serial/mfd.c @@ -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 |