Commit 553c4aa6 authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik

libata: handle pci_enable_device() failure while resuming

Handle pci_enable_device() failure while resuming.  This patch kills
the "ignoring return value of 'pci_enable_device'" warning message and
propagates __must_check through ata_pci_device_do_resume().
Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 8bfa79fc
......@@ -1397,7 +1397,9 @@ static int ahci_pci_device_resume(struct pci_dev *pdev)
void __iomem *mmio = host->mmio_base;
int rc;
ata_pci_device_do_resume(pdev);
rc = ata_pci_device_do_resume(pdev);
if (rc)
return rc;
if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
rc = ahci_reset_controller(mmio, pdev);
......
......@@ -6196,12 +6196,22 @@ void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg)
}
}
void ata_pci_device_do_resume(struct pci_dev *pdev)
int ata_pci_device_do_resume(struct pci_dev *pdev)
{
int rc;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
pci_enable_device(pdev);
rc = pci_enable_device(pdev);
if (rc) {
dev_printk(KERN_ERR, &pdev->dev,
"failed to enable device after resume (%d)\n", rc);
return rc;
}
pci_set_master(pdev);
return 0;
}
int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
......@@ -6221,10 +6231,12 @@ int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
int ata_pci_device_resume(struct pci_dev *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
int rc;
ata_pci_device_do_resume(pdev);
ata_host_resume(host);
return 0;
rc = ata_pci_device_do_resume(pdev);
if (rc == 0)
ata_host_resume(host);
return rc;
}
#endif /* CONFIG_PCI */
......
......@@ -710,8 +710,12 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
static int sil_pci_device_resume(struct pci_dev *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
int rc;
rc = ata_pci_device_do_resume(pdev);
if (rc)
return rc;
ata_pci_device_do_resume(pdev);
sil_init_controller(pdev, host->n_ports, host->ports[0]->flags,
host->mmio_base);
ata_host_resume(host);
......
......@@ -1200,8 +1200,11 @@ static int sil24_pci_device_resume(struct pci_dev *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
struct sil24_host_priv *hpriv = host->private_data;
int rc;
ata_pci_device_do_resume(pdev);
rc = ata_pci_device_do_resume(pdev);
if (rc)
return rc;
if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND)
writel(HOST_CTRL_GLOBAL_RST, hpriv->host_base + HOST_CTRL);
......
......@@ -716,7 +716,7 @@ extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_i
unsigned int n_ports);
extern void ata_pci_remove_one (struct pci_dev *pdev);
extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
extern void ata_pci_device_do_resume(struct pci_dev *pdev);
extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
extern int ata_pci_device_resume(struct pci_dev *pdev);
extern int ata_pci_clear_simplex(struct pci_dev *pdev);
......
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