diff options
| author |   Eric Auger <eric.auger@linaro.org> | 2015-11-03 18:12:18 +0000 |
|---|---|---|
| committer |   Alex Williamson <alex.williamson@redhat.com> | 2015-11-03 12:55:05 -0700 |
| commit | 705e60bae3e09bedba0b2ec936bce3f799f46426 (patch) | |
| tree | ab602112e5d9ae894bdbd7bf7963250541e2a24c /drivers/vfio | |
| parent | vfio: platform: use list of registered reset function (diff) | |
| download | linux-dev-705e60bae3e09bedba0b2ec936bce3f799f46426.tar.xz linux-dev-705e60bae3e09bedba0b2ec936bce3f799f46426.zip | |
vfio: platform: add dev_info on device reset
It might be helpful for the end-user to check the device reset
function was found by the vfio platform reset framework.
Lets store a pointer to the struct device in vfio_platform_device
and trace when the reset function is called or not found.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/platform/vfio_platform_common.c | 14 | ||||
| -rw-r--r-- | drivers/vfio/platform/vfio_platform_private.h | 1 |
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index ac0229622c1f..a1c50d630792 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -144,8 +144,12 @@ static void vfio_platform_release(void *device_data) mutex_lock(&driver_lock); if (!(--vdev->refcnt)) { - if (vdev->reset) + if (vdev->reset) { + dev_info(vdev->device, "reset\n"); vdev->reset(vdev); + } else { + dev_warn(vdev->device, "no reset function found!\n"); + } vfio_platform_regions_cleanup(vdev); vfio_platform_irq_cleanup(vdev); } @@ -174,8 +178,12 @@ static int vfio_platform_open(void *device_data) if (ret) goto err_irq; - if (vdev->reset) + if (vdev->reset) { + dev_info(vdev->device, "reset\n"); vdev->reset(vdev); + } else { + dev_warn(vdev->device, "no reset function found!\n"); + } } vdev->refcnt++; @@ -551,6 +559,8 @@ int vfio_platform_probe_common(struct vfio_platform_device *vdev, return -EINVAL; } + vdev->device = dev; + group = iommu_group_get(dev); if (!group) { pr_err("VFIO: No IOMMU group for device %s\n", vdev->name); diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index d1b0668fe394..42816dd280cb 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -59,6 +59,7 @@ struct vfio_platform_device { struct module *parent_module; const char *compat; struct module *reset_module; + struct device *device; /* * These fields should be filled by the bus specific binder |