From 2e3f5251ac716879df6b6271f243f657c6e02e9a Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Sun, 6 May 2007 14:51:29 -0700 Subject: [PATCH] uml: drivers get release methods Define release methods for the ubd and net drivers. They contain as much of the remove methods as make sense. All error checking must have already been done as well as anything else that might be holding a reference on the device kobject. Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/drivers/net_kern.c | 19 +++++++++++++++---- arch/um/drivers/ubd_kern.c | 17 ++++++++++++----- 2 files changed, 27 insertions(+), 9 deletions(-) diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c index b2c292a66218..baac4ad5e68e 100644 --- a/arch/um/drivers/net_kern.c +++ b/arch/um/drivers/net_kern.c @@ -341,6 +341,19 @@ static struct platform_driver uml_net_driver = { }; static int driver_registered; +static void net_device_release(struct device *dev) +{ + struct uml_net *device = dev->driver_data; + struct net_device *netdev = device->dev; + struct uml_net_private *lp = netdev->priv; + + if(lp->remove != NULL) + (*lp->remove)(&lp->user); + list_del(&device->list); + kfree(device); + free_netdev(netdev); +} + static void eth_configure(int n, void *init, char *mac, struct transport *transport) { @@ -396,6 +409,8 @@ static void eth_configure(int n, void *init, char *mac, } device->pdev.id = n; device->pdev.name = DRIVER_NAME; + device->pdev.dev.release = net_device_release; + device->pdev.dev.driver_data = device; if(platform_device_register(&device->pdev)) goto out_free_netdev; SET_NETDEV_DEV(dev,&device->pdev.dev); @@ -689,13 +704,9 @@ static int net_remove(int n, char **error_out) lp = dev->priv; if(lp->fd > 0) return -EBUSY; - if(lp->remove != NULL) (*lp->remove)(&lp->user); unregister_netdev(dev); platform_device_unregister(&device->pdev); - list_del(&device->list); - kfree(device); - free_netdev(dev); return 0; } diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 962b8fb35f80..83189e188c3f 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -622,6 +622,14 @@ static int ubd_open_dev(struct ubd *ubd_dev) return(err); } +static void ubd_device_release(struct device *dev) +{ + struct ubd *ubd_dev = dev->driver_data; + + blk_cleanup_queue(ubd_dev->queue); + *ubd_dev = ((struct ubd) DEFAULT_UBD); +} + static int ubd_disk_register(int major, u64 size, int unit, struct gendisk **disk_out) { @@ -644,6 +652,8 @@ static int ubd_disk_register(int major, u64 size, int unit, if (major == MAJOR_NR) { ubd_devs[unit].pdev.id = unit; ubd_devs[unit].pdev.name = DRIVER_NAME; + ubd_devs[unit].pdev.dev.release = ubd_device_release; + ubd_devs[unit].pdev.dev.driver_data = &ubd_devs[unit]; platform_device_register(&ubd_devs[unit].pdev); disk->driverfs_dev = &ubd_devs[unit].pdev.dev; } @@ -787,7 +797,7 @@ static int ubd_id(char **str, int *start_out, int *end_out) static int ubd_remove(int n, char **error_out) { - struct gendisk *disk; + struct gendisk *disk = ubd_gendisk[n]; struct ubd *ubd_dev; int err = -ENODEV; @@ -803,7 +813,6 @@ static int ubd_remove(int n, char **error_out) if(ubd_dev->count > 0) goto out; - disk = ubd_gendisk[n]; ubd_gendisk[n] = NULL; if(disk != NULL){ del_gendisk(disk); @@ -816,10 +825,8 @@ static int ubd_remove(int n, char **error_out) fake_gendisk[n] = NULL; } - blk_cleanup_queue(ubd_dev->queue); - platform_device_unregister(&ubd_dev->pdev); - *ubd_dev = ((struct ubd) DEFAULT_UBD); err = 0; + platform_device_unregister(&ubd_dev->pdev); out: mutex_unlock(&ubd_lock); return err; -- 2.20.1