diff options
author | Eric Auger <eric.auger@linaro.org> | 2015-11-03 21:12:13 +0300 |
---|---|---|
committer | Alex Williamson <alex.williamson@redhat.com> | 2015-11-03 22:54:57 +0300 |
commit | e086497d313cbcffcdb5405a5a268961b53519b1 (patch) | |
tree | ec06092fd1e05ceafe37be321dd4eb8c5e6f7f85 /drivers/vfio/platform/vfio_platform_common.c | |
parent | 32a2d71c4e808b5aa6c414d4422b5e6c594c8805 (diff) | |
download | linux-e086497d313cbcffcdb5405a5a268961b53519b1.tar.xz |
vfio: platform: add capability to register a reset function
In preparation for subsequent changes in reset function lookup,
lets introduce a dynamic list of reset combos (compat string,
reset module, reset function). The list can be populated/voided with
vfio_platform_register/unregister_reset. Those are not yet used in
this patch.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/platform/vfio_platform_common.c')
-rw-r--r-- | drivers/vfio/platform/vfio_platform_common.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index 7f69b852c7e2..7decc50ccf30 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -27,6 +27,7 @@ #define DRIVER_AUTHOR "Antonios Motakis <a.motakis@virtualopensystems.com>" #define DRIVER_DESC "VFIO platform base module" +static LIST_HEAD(reset_list); static DEFINE_MUTEX(driver_lock); static const struct vfio_platform_reset_combo reset_lookup_table[] = { @@ -578,6 +579,32 @@ struct vfio_platform_device *vfio_platform_remove_common(struct device *dev) } EXPORT_SYMBOL_GPL(vfio_platform_remove_common); +void __vfio_platform_register_reset(struct vfio_platform_reset_node *node) +{ + mutex_lock(&driver_lock); + list_add(&node->link, &reset_list); + mutex_unlock(&driver_lock); +} +EXPORT_SYMBOL_GPL(__vfio_platform_register_reset); + +void vfio_platform_unregister_reset(const char *compat, + vfio_platform_reset_fn_t fn) +{ + struct vfio_platform_reset_node *iter, *temp; + + mutex_lock(&driver_lock); + list_for_each_entry_safe(iter, temp, &reset_list, link) { + if (!strcmp(iter->compat, compat) && (iter->reset == fn)) { + list_del(&iter->link); + break; + } + } + + mutex_unlock(&driver_lock); + +} +EXPORT_SYMBOL_GPL(vfio_platform_unregister_reset); + MODULE_VERSION(DRIVER_VERSION); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR(DRIVER_AUTHOR); |