diff options
Diffstat (limited to 'drivers/cdx/cdx.c')
| -rw-r--r-- | drivers/cdx/cdx.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c index c573ed2ee71a..092306ca2541 100644 --- a/drivers/cdx/cdx.c +++ b/drivers/cdx/cdx.c @@ -360,7 +360,8 @@ static int cdx_dma_configure(struct device *dev) return ret; } - if (!ret && !cdx_drv->driver_managed_dma) { + /* @cdx_drv may not be valid when we're called from the IOMMU layer */ + if (!ret && dev->driver && !cdx_drv->driver_managed_dma) { ret = iommu_device_use_default_domain(dev); if (ret) arch_teardown_dma_ops(dev); @@ -473,8 +474,12 @@ static ssize_t driver_override_show(struct device *dev, struct device_attribute *attr, char *buf) { struct cdx_device *cdx_dev = to_cdx_device(dev); + ssize_t len; - return sysfs_emit(buf, "%s\n", cdx_dev->driver_override); + device_lock(dev); + len = sysfs_emit(buf, "%s\n", cdx_dev->driver_override); + device_unlock(dev); + return len; } static DEVICE_ATTR_RW(driver_override); |