From: Arnd Bergmann Date: Fri, 27 Mar 2026 16:55:08 +0000 (+0100) Subject: vfio: unhide vdev->debug_root X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=555aa178f8d22261d71da74df6267e6e6e97f95a;p=thirdparty%2Flinux.git vfio: unhide vdev->debug_root When debugfs is disabled, the hisilicon driver now fails to build: drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c: In function 'hisi_acc_vfio_debug_init': drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c:1671:62: error: 'struct vfio_device' has no member named 'debug_root' 1671 | vfio_dev_migration = debugfs_lookup("migration", vdev->debug_root); | ^~ The driver otherwise relies on dead-code elimination, but this reference fails. The single struct member is not going to make much of a difference for memory consumption, so just keep this visible unconditionally. Signed-off-by: Arnd Bergmann Fixes: b398f91779b8 ("hisi_acc_vfio_pci: register debugfs for hisilicon migration driver") Link: https://lore.kernel.org/r/20260327165521.3779707-1-arnd@kernel.org Signed-off-by: Alex Williamson --- diff --git a/include/linux/vfio.h b/include/linux/vfio.h index 50b474334a19..31b826efba00 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -74,13 +74,11 @@ struct vfio_device { u8 iommufd_attached:1; #endif u8 cdev_opened:1; -#ifdef CONFIG_DEBUG_FS /* * debug_root is a static property of the vfio_device * which must be set prior to registering the vfio_device. */ struct dentry *debug_root; -#endif }; /**