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xen: make remove callback of xen driver void returned 

Since commit fc7a6209d5 ("bus: Make remove callback return void")
forces bus_type::remove be void-returned, it doesn't make much sense for
any bus based driver implementing remove callbalk to return non-void to
its caller.

This change is for xen bus based drivers.

Acked-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Dawei Li <set_pte_at@outlook.com>
Link: https://lore.kernel.org/r/TYCP286MB23238119AB4DF190997075C9CAE39@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Dawei Li 2022-12-13 23:46:52 +08:00 committed by Juergen Gross
parent 8b997b2bb2
commit 7cffcade57
19 changed files with 22 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/block/xen-blkback/xenbus.c
View File

@ -524,7 +524,7 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
return 0;
}
static int xen_blkbk_remove(struct xenbus_device *dev)
static void xen_blkbk_remove(struct xenbus_device *dev)
{
struct backend_info *be = dev_get_drvdata(&dev->dev);
@ -547,8 +547,6 @@ static int xen_blkbk_remove(struct xenbus_device *dev)
/* Put the reference we set in xen_blkif_alloc(). */
xen_blkif_put(be->blkif);
}
return 0;
}
int xen_blkbk_flush_diskcache(struct xenbus_transaction xbt,

3
drivers/block/xen-blkfront.c
View File

@ -2468,7 +2468,7 @@ static void blkback_changed(struct xenbus_device *dev,
}
}
static int blkfront_remove(struct xenbus_device *xbdev)
static void blkfront_remove(struct xenbus_device *xbdev)
{
struct blkfront_info *info = dev_get_drvdata(&xbdev->dev);
@ -2489,7 +2489,6 @@ static int blkfront_remove(struct xenbus_device *xbdev)
}
kfree(info);
return 0;
}
static int blkfront_is_ready(struct xenbus_device *dev)

3
drivers/char/tpm/xen-tpmfront.c
View File

@ -360,14 +360,13 @@ static int tpmfront_probe(struct xenbus_device *dev,
return tpm_chip_register(priv->chip);
}
static int tpmfront_remove(struct xenbus_device *dev)
static void tpmfront_remove(struct xenbus_device *dev)
{
struct tpm_chip *chip = dev_get_drvdata(&dev->dev);
struct tpm_private *priv = dev_get_drvdata(&chip->dev);
tpm_chip_unregister(chip);
ring_free(priv);
dev_set_drvdata(&chip->dev, NULL);
return 0;
}
static int tpmfront_resume(struct xenbus_device *dev)

3
drivers/gpu/drm/xen/xen_drm_front.c
View File

@ -717,7 +717,7 @@ static int xen_drv_probe(struct xenbus_device *xb_dev,
return xenbus_switch_state(xb_dev, XenbusStateInitialising);
}
static int xen_drv_remove(struct xenbus_device *dev)
static void xen_drv_remove(struct xenbus_device *dev)
{
struct xen_drm_front_info *front_info = dev_get_drvdata(&dev->dev);
int to = 100;
@ -751,7 +751,6 @@ static int xen_drv_remove(struct xenbus_device *dev)
xen_drm_drv_fini(front_info);
xenbus_frontend_closed(dev);
return 0;
}
static const struct xenbus_device_id xen_driver_ids[] = {

5
drivers/input/misc/xen-kbdfront.c
View File

@ -51,7 +51,7 @@ module_param_array(ptr_size, int, NULL, 0444);
MODULE_PARM_DESC(ptr_size,
"Pointing device width, height in pixels (default 800,600)");
static int xenkbd_remove(struct xenbus_device *);
static void xenkbd_remove(struct xenbus_device *);
static int xenkbd_connect_backend(struct xenbus_device *, struct xenkbd_info *);
static void xenkbd_disconnect_backend(struct xenkbd_info *);
@ -404,7 +404,7 @@ static int xenkbd_resume(struct xenbus_device *dev)
return xenkbd_connect_backend(dev, info);
}
static int xenkbd_remove(struct xenbus_device *dev)
static void xenkbd_remove(struct xenbus_device *dev)
{
struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
@ -417,7 +417,6 @@ static int xenkbd_remove(struct xenbus_device *dev)
input_unregister_device(info->mtouch);
free_page((unsigned long)info->page);
kfree(info);
return 0;
}
static int xenkbd_connect_backend(struct xenbus_device *dev,

3
drivers/net/xen-netback/xenbus.c
View File

@ -977,7 +977,7 @@ static int read_xenbus_vif_flags(struct backend_info *be)
return 0;
}
static int netback_remove(struct xenbus_device *dev)
static void netback_remove(struct xenbus_device *dev)
{
struct backend_info *be = dev_get_drvdata(&dev->dev);
@ -992,7 +992,6 @@ static int netback_remove(struct xenbus_device *dev)
kfree(be->hotplug_script);
kfree(be);
dev_set_drvdata(&dev->dev, NULL);
return 0;
}
/*

4
drivers/net/xen-netfront.c
View File

@ -2640,7 +2640,7 @@ static void xennet_bus_close(struct xenbus_device *dev)
} while (!ret);
}
static int xennet_remove(struct xenbus_device *dev)
static void xennet_remove(struct xenbus_device *dev)
{
struct netfront_info *info = dev_get_drvdata(&dev->dev);
@ -2656,8 +2656,6 @@ static int xennet_remove(struct xenbus_device *dev)
rtnl_unlock();
}
xennet_free_netdev(info->netdev);
return 0;
}
static const struct xenbus_device_id netfront_ids[] = {

4
drivers/pci/xen-pcifront.c
View File

@ -1055,14 +1055,12 @@ out:
return err;
}
static int pcifront_xenbus_remove(struct xenbus_device *xdev)
static void pcifront_xenbus_remove(struct xenbus_device *xdev)
{
struct pcifront_device *pdev = dev_get_drvdata(&xdev->dev);
if (pdev)
free_pdev(pdev);
return 0;
}
static const struct xenbus_device_id xenpci_ids[] = {

4
drivers/scsi/xen-scsifront.c
View File

@ -995,7 +995,7 @@ static int scsifront_suspend(struct xenbus_device *dev)
return err;
}
static int scsifront_remove(struct xenbus_device *dev)
static void scsifront_remove(struct xenbus_device *dev)
{
struct vscsifrnt_info *info = dev_get_drvdata(&dev->dev);
@ -1011,8 +1011,6 @@ static int scsifront_remove(struct xenbus_device *dev)
scsifront_free_ring(info);
scsi_host_put(info->host);
return 0;
}
static void scsifront_disconnect(struct vscsifrnt_info *info)

4
drivers/tty/hvc/hvc_xen.c
View File

@ -394,9 +394,9 @@ static int xen_console_remove(struct xencons_info *info)
return 0;
}
static int xencons_remove(struct xenbus_device *dev)
static void xencons_remove(struct xenbus_device *dev)
{
return xen_console_remove(dev_get_drvdata(&dev->dev));
xen_console_remove(dev_get_drvdata(&dev->dev));
}
static int xencons_connect_backend(struct xenbus_device *dev,

4
drivers/usb/host/xen-hcd.c
View File

@ -1530,15 +1530,13 @@ static void xenhcd_backend_changed(struct xenbus_device *dev,
}
}
static int xenhcd_remove(struct xenbus_device *dev)
static void xenhcd_remove(struct xenbus_device *dev)
{
struct xenhcd_info *info = dev_get_drvdata(&dev->dev);
struct usb_hcd *hcd = xenhcd_info_to_hcd(info);
xenhcd_destroy_rings(info);
usb_put_hcd(hcd);
return 0;
}
static int xenhcd_probe(struct xenbus_device *dev,

6
drivers/video/fbdev/xen-fbfront.c
View File

@ -67,7 +67,7 @@ MODULE_PARM_DESC(video,
"Video memory size in MB, width, height in pixels (default 2,800,600)");
static void xenfb_make_preferred_console(void);
static int xenfb_remove(struct xenbus_device *);
static void xenfb_remove(struct xenbus_device *);
static void xenfb_init_shared_page(struct xenfb_info *, struct fb_info *);
static int xenfb_connect_backend(struct xenbus_device *, struct xenfb_info *);
static void xenfb_disconnect_backend(struct xenfb_info *);
@ -527,7 +527,7 @@ static int xenfb_resume(struct xenbus_device *dev)
return xenfb_connect_backend(dev, info);
}
static int xenfb_remove(struct xenbus_device *dev)
static void xenfb_remove(struct xenbus_device *dev)
{
struct xenfb_info *info = dev_get_drvdata(&dev->dev);
@ -542,8 +542,6 @@ static int xenfb_remove(struct xenbus_device *dev)
vfree(info->gfns);
vfree(info->fb);
kfree(info);
return 0;
}
static unsigned long vmalloc_to_gfn(void *address)

3
drivers/xen/pvcalls-back.c
View File

@ -1181,9 +1181,8 @@ static void pvcalls_back_changed(struct xenbus_device *dev,
}
}
static int pvcalls_back_remove(struct xenbus_device *dev)
static void pvcalls_back_remove(struct xenbus_device *dev)
{
return 0;
}
static int pvcalls_back_uevent(struct xenbus_device *xdev,

3
drivers/xen/pvcalls-front.c
View File

@ -1085,7 +1085,7 @@ static const struct xenbus_device_id pvcalls_front_ids[] = {
{ "" }
};
static int pvcalls_front_remove(struct xenbus_device *dev)
static void pvcalls_front_remove(struct xenbus_device *dev)
{
struct pvcalls_bedata *bedata;
struct sock_mapping *map = NULL, *n;
@ -1121,7 +1121,6 @@ static int pvcalls_front_remove(struct xenbus_device *dev)
kfree(bedata->ring.sring);
kfree(bedata);
xenbus_switch_state(dev, XenbusStateClosed);
return 0;
}
static int pvcalls_front_probe(struct xenbus_device *dev,

4
drivers/xen/xen-pciback/xenbus.c
View File

@ -716,14 +716,12 @@ out:
return err;
}
static int xen_pcibk_xenbus_remove(struct xenbus_device *dev)
static void xen_pcibk_xenbus_remove(struct xenbus_device *dev)
{
struct xen_pcibk_device *pdev = dev_get_drvdata(&dev->dev);
if (pdev != NULL)
free_pdev(pdev);
return 0;
}
static const struct xenbus_device_id xen_pcibk_ids[] = {

4
drivers/xen/xen-scsiback.c
View File

@ -1249,7 +1249,7 @@ static void scsiback_release_translation_entry(struct vscsibk_info *info)
spin_unlock_irqrestore(&info->v2p_lock, flags);
}
static int scsiback_remove(struct xenbus_device *dev)
static void scsiback_remove(struct xenbus_device *dev)
{
struct vscsibk_info *info = dev_get_drvdata(&dev->dev);
@ -1261,8 +1261,6 @@ static int scsiback_remove(struct xenbus_device *dev)
gnttab_page_cache_shrink(&info->free_pages, 0);
dev_set_drvdata(&dev->dev, NULL);
return 0;
}
static int scsiback_probe(struct xenbus_device *dev,

2
include/xen/xenbus.h
View File

@ -117,7 +117,7 @@ struct xenbus_driver {
const struct xenbus_device_id *id);
void (*otherend_changed)(struct xenbus_device *dev,
enum xenbus_state backend_state);
int (*remove)(struct xenbus_device *dev);
void (*remove)(struct xenbus_device *dev);
int (*suspend)(struct xenbus_device *dev);
int (*resume)(struct xenbus_device *dev);
int (*uevent)(struct xenbus_device *, struct kobj_uevent_env *);

3
net/9p/trans_xen.c
View File

@ -303,13 +303,12 @@ static void xen_9pfs_front_free(struct xen_9pfs_front_priv *priv)
kfree(priv);
}
static int xen_9pfs_front_remove(struct xenbus_device *dev)
static void xen_9pfs_front_remove(struct xenbus_device *dev)
{
struct xen_9pfs_front_priv *priv = dev_get_drvdata(&dev->dev);
dev_set_drvdata(&dev->dev, NULL);
xen_9pfs_front_free(priv);
return 0;
}
static int xen_9pfs_front_alloc_dataring(struct xenbus_device *dev,

3
sound/xen/xen_snd_front.c
View File

@ -311,7 +311,7 @@ static int xen_drv_probe(struct xenbus_device *xb_dev,
return xenbus_switch_state(xb_dev, XenbusStateInitialising);
}
static int xen_drv_remove(struct xenbus_device *dev)
static void xen_drv_remove(struct xenbus_device *dev)
{
struct xen_snd_front_info *front_info = dev_get_drvdata(&dev->dev);
int to = 100;
@ -345,7 +345,6 @@ static int xen_drv_remove(struct xenbus_device *dev)
xen_snd_drv_fini(front_info);
xenbus_frontend_closed(dev);
return 0;
}
static const struct xenbus_device_id xen_drv_ids[] = {