vfio: platform: add compat in vfio_platform_device
Let's retrieve the compatibility string on probe and store it
in the vfio_platform_device struct
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
index 7decc50..d8df8a4 100644
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -41,16 +41,11 @@
static void vfio_platform_get_reset(struct vfio_platform_device *vdev,
struct device *dev)
{
- const char *compat;
int (*reset)(struct vfio_platform_device *);
- int ret, i;
-
- ret = device_property_read_string(dev, "compatible", &compat);
- if (ret)
- return;
+ int i;
for (i = 0 ; i < ARRAY_SIZE(reset_lookup_table); i++) {
- if (!strcmp(reset_lookup_table[i].compat, compat)) {
+ if (!strcmp(reset_lookup_table[i].compat, vdev->compat)) {
request_module(reset_lookup_table[i].module_name);
reset = __symbol_get(
reset_lookup_table[i].reset_function_name);
@@ -544,6 +539,12 @@
if (!vdev)
return -EINVAL;
+ ret = device_property_read_string(dev, "compatible", &vdev->compat);
+ if (ret) {
+ pr_err("VFIO: cannot retrieve compat for %s\n", vdev->name);
+ return -EINVAL;
+ }
+
group = iommu_group_get(dev);
if (!group) {
pr_err("VFIO: No IOMMU group for device %s\n", vdev->name);