diff options
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-bus.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 0c3a38d7f335..7671bd158545 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -139,9 +139,9 @@ static int fsl_mc_bus_uevent(const struct device *dev, struct kobj_uevent_env *e static int fsl_mc_dma_configure(struct device *dev) { + const struct device_driver *drv = READ_ONCE(dev->driver); struct device *dma_dev = dev; struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); - struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver); u32 input_id = mc_dev->icid; int ret; @@ -153,8 +153,8 @@ static int fsl_mc_dma_configure(struct device *dev) else ret = acpi_dma_configure_id(dev, DEV_DMA_COHERENT, &input_id); - /* @mc_drv may not be valid when we're called from the IOMMU layer */ - if (!ret && dev->driver && !mc_drv->driver_managed_dma) { + /* @drv may not be valid when we're called from the IOMMU layer */ + if (!ret && drv && !to_fsl_mc_driver(drv)->driver_managed_dma) { ret = iommu_device_use_default_domain(dev); if (ret) arch_teardown_dma_ops(dev); |