[PATCH v4 14/16] arm64/lib: Add an helper to free memory allocated by the ASID allocator

[Shameer Kolothum]

From: Julien Grall <julien.grall@xxxxxxx>

Some users of the ASID allocator (e.g VMID) may need to free any
resources if the initialization fail. So introduce a function that
allows freeing of any memory allocated by the ASID allocator.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>
---
 arch/arm64/include/asm/lib_asid.h | 2 ++
 arch/arm64/lib/asid.c             | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm64/include/asm/lib_asid.h b/arch/arm64/include/asm/lib_asid.h
index acae8d243d17..4dbc0a3f19a6 100644
--- a/arch/arm64/include/asm/lib_asid.h
+++ b/arch/arm64/include/asm/lib_asid.h
@@ -82,4 +82,6 @@ void asid_context_pinned_put(struct asid_info *info, atomic64_t *pasid,
 			     refcount_t *pinned);
 int asid_allocator_init(struct asid_info *info, u32 bits, bool pinned);
 
+void asid_allocator_free(struct asid_info *info);
+
 #endif
diff --git a/arch/arm64/lib/asid.c b/arch/arm64/lib/asid.c
index 286285616f65..7bd031f9516a 100644
--- a/arch/arm64/lib/asid.c
+++ b/arch/arm64/lib/asid.c
@@ -256,3 +256,9 @@ int asid_allocator_init(struct asid_info *info, u32 bits, bool pinned)
 
 	return 0;
 }
+
+void asid_allocator_free(struct asid_info *info)
+{
+	kfree(info->map);
+	kfree(info->pinned_map);
+}
-- 
2.17.1