svn commit: r346383 - in stable/11/sys: kern sys

[Konstantin Belousov]

Author: kib
Date: Fri Apr 19 13:09:16 2019
New Revision: 346383
URL: https://svnweb.freebsd.org/changeset/base/346383

Log:
  MFC r345965:
  Add DEV_RESET /dev/devctl2 ioctl.

Modified:
  stable/11/sys/kern/subr_bus.c
  stable/11/sys/sys/bus.h
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/kern/subr_bus.c
==============================================================================
--- stable/11/sys/kern/subr_bus.c	Fri Apr 19 13:04:48 2019	(r346382)
+++ stable/11/sys/kern/subr_bus.c	Fri Apr 19 13:09:16 2019	(r346383)
@@ -5476,6 +5476,7 @@ devctl2_ioctl(struct cdev *cdev, u_long cmd, caddr_t d
 	case DEV_CLEAR_DRIVER:
 	case DEV_RESCAN:
 	case DEV_DELETE:
+	case DEV_RESET:
 		error = priv_check(td, PRIV_DRIVER);
 		if (error == 0)
 			error = find_device(req, &dev);
@@ -5683,6 +5684,14 @@ devctl2_ioctl(struct cdev *cdev, u_long cmd, caddr_t d
 		error = device_delete_child(parent, dev);
 		break;
 	}
+	case DEV_RESET:
+		if ((req->dr_flags & ~(DEVF_RESET_DETACH)) != 0) {
+			error = EINVAL;
+			break;
+		}
+		error = BUS_RESET_CHILD(device_get_parent(dev), dev,
+		    req->dr_flags);
+		break;
 	}
 	mtx_unlock(&Giant);
 	return (error);

Modified: stable/11/sys/sys/bus.h
==============================================================================
--- stable/11/sys/sys/bus.h	Fri Apr 19 13:04:48 2019	(r346382)
+++ stable/11/sys/sys/bus.h	Fri Apr 19 13:09:16 2019	(r346383)
@@ -120,6 +120,7 @@ struct devreq {
 #define	DEV_CLEAR_DRIVER _IOW('D', 8, struct devreq)
 #define	DEV_RESCAN	_IOW('D', 9, struct devreq)
 #define	DEV_DELETE	_IOW('D', 10, struct devreq)
+#define	DEV_RESET	_IOW('D', 13, struct devreq)
 
 /* Flags for DEV_DETACH and DEV_DISABLE. */
 #define	DEVF_FORCE_DETACH	0x0000001