The module_vfio_reset_handler macro
- define a module alias
- implement module init/exit function which respectively registers
  and unregisters the reset function.

Signed-off-by: Eric Auger <eric.au...@linaro.org>
Reviewed-by: Arnd Bergmann <a...@arndb.de>

---
v4 -> v5:
- add Arnd's R-b

v3 -> v4:
- pass reset to vfio_platform_unregister_reset

v2 -> v3:
- use vfio_platform_register_reset macro

v1 -> v2:
- remove vfio_platform_reset_private.h and move back the macro to
  vfio_platform_private.h header: removed reset_module_register &
  unregister (symbol_get)
- defines the module_vfio_reset_handler macro as suggested by Arnd
  (formerly in vfio_platform_reset_private.h)
---
 drivers/vfio/platform/vfio_platform_private.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/vfio/platform/vfio_platform_private.h 
b/drivers/vfio/platform/vfio_platform_private.h
index c563940..fd262be 100644
--- a/drivers/vfio/platform/vfio_platform_private.h
+++ b/drivers/vfio/platform/vfio_platform_private.h
@@ -110,4 +110,18 @@ static struct vfio_platform_reset_node __reset ## _node = 
{        \
 };                                                             \
 __vfio_platform_register_reset(&__reset ## _node)
 
+#define module_vfio_reset_handler(compat, reset)               \
+MODULE_ALIAS("vfio-reset:" compat);                            \
+static int __init reset ## _module_init(void)                  \
+{                                                              \
+       vfio_platform_register_reset(compat, reset);            \
+       return 0;                                               \
+};                                                             \
+static void __exit reset ## _module_exit(void)                 \
+{                                                              \
+       vfio_platform_unregister_reset(compat, reset);          \
+};                                                             \
+module_init(reset ## _module_init);                            \
+module_exit(reset ## _module_exit)
+
 #endif /* VFIO_PLATFORM_PRIVATE_H */
-- 
1.9.1

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