diff options
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.c')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 732f6d35b4a..c2eea711a5c 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -28,7 +28,9 @@ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/kthread.h> +#include <linux/slab.h> #include <linux/of.h> +#include <linux/pm.h> #include <linux/stringify.h> #include <asm/firmware.h> #include <asm/irq.h> @@ -4736,6 +4738,27 @@ static int ibmvfc_remove(struct vio_dev *vdev) } /** + * ibmvfc_resume - Resume from suspend + * @dev: device struct + * + * We may have lost an interrupt across suspend/resume, so kick the + * interrupt handler + * + */ +static int ibmvfc_resume(struct device *dev) +{ + unsigned long flags; + struct ibmvfc_host *vhost = dev_get_drvdata(dev); + struct vio_dev *vdev = to_vio_dev(dev); + + spin_lock_irqsave(vhost->host->host_lock, flags); + vio_disable_interrupts(vdev); + tasklet_schedule(&vhost->tasklet); + spin_unlock_irqrestore(vhost->host->host_lock, flags); + return 0; +} + +/** * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver * @vdev: vio device struct * @@ -4755,6 +4778,10 @@ static struct vio_device_id ibmvfc_device_table[] __devinitdata = { }; MODULE_DEVICE_TABLE(vio, ibmvfc_device_table); +static struct dev_pm_ops ibmvfc_pm_ops = { + .resume = ibmvfc_resume +}; + static struct vio_driver ibmvfc_driver = { .id_table = ibmvfc_device_table, .probe = ibmvfc_probe, @@ -4763,6 +4790,7 @@ static struct vio_driver ibmvfc_driver = { .driver = { .name = IBMVFC_NAME, .owner = THIS_MODULE, + .pm = &ibmvfc_pm_ops, } }; |