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vfio: platform: determine reset capability

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Creating a new function to determine if this driver supports reset
function or not. This is an attempt to abstract device tree calls
from the rest of the code.

Signed-off-by: Sinan Kaya <[email protected]>
Reviewed-by: Eric Auger <[email protected]>
Reviewed-by: Baptiste Reynal <[email protected]>
Signed-off-by: Alex Williamson <[email protected]>
This commit is contained in:
Sinan Kaya 2016-07-19 09:01:43 -04:00 • committed by Alex Williamson
commit dc5542fb11
1 changed files with 6 additions and 1 deletions
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7
drivers/vfio/platform/vfio_platform_common.c
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@ -49,6 +49,11 @@ static vfio_platform_reset_fn_t vfio_platform_lookup_reset(const char *compat,
return reset_fn;
}
static bool vfio_platform_has_reset(struct vfio_platform_device *vdev)
{
return vdev->of_reset ? true : false;
}
static void vfio_platform_get_reset(struct vfio_platform_device *vdev)
{
vdev->of_reset = vfio_platform_lookup_reset(vdev->compat,
@ -214,7 +219,7 @@ static long vfio_platform_ioctl(void *device_data,
if (info.argsz < minsz)
return -EINVAL;
if (vdev->of_reset)
if (vfio_platform_has_reset(vdev))
vdev->flags |= VFIO_DEVICE_FLAGS_RESET;
info.flags = vdev->flags;
info.num_regions = vdev->num_regions;