[PATCH] drm/i915/gvt: use strscpy() instead of strcpy() in virt_vbt_generation()

[Hrushiraj Gandhi <hrushirajg23@gmail.com>]

strcpy() has no bound on the destination buffer, so convert this to
the bounded, always-NUL-terminating strscpy() instead. The literal
"BIOS_DATA_BLOCK" (15 chars + NUL) fits the 16-byte signature field
exactly, so this is a no-op change in behaviour.

No functional change.

Signed-off-by: Hrushiraj Gandhi <hrushirajg23@gmail.com>
---
 drivers/gpu/drm/i915/gvt/opregion.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gvt/opregion.c b/drivers/gpu/drm/i915/gvt/opregion.c
index d6e76ba31d60..f2527e26cd1e 100644
--- a/drivers/gpu/drm/i915/gvt/opregion.c
+++ b/drivers/gpu/drm/i915/gvt/opregion.c
@@ -151,7 +151,8 @@ static void virt_vbt_generation(struct vbt *v)
 	v->header.vbt_size = sizeof(struct vbt);
 	v->header.bdb_offset = offsetof(struct vbt, bdb_header);
 
-	strcpy(&v->bdb_header.signature[0], "BIOS_DATA_BLOCK");
+	strscpy(v->bdb_header.signature, "BIOS_DATA_BLOCK",
+		sizeof(v->bdb_header.signature));
 	v->bdb_header.version = 186; /* child_dev_size = 33 */
 	v->bdb_header.header_size = sizeof(v->bdb_header);