diff mbox series

[v2,5/5] media: amphion: ensure the bitops don't cross boundaries

Message ID f2ae16159150707d350a495711f5767c29a911bf.1689673395.git.ming.qian@nxp.com
State Accepted
Commit 5bd28eae48589694ff4e5badb03bf75dae695b3f
Headers show
Series media: amphion: fix some issues reported by coverity | expand

Commit Message

Ming Qian July 18, 2023, 9:50 a.m. UTC 
the supported_instance_count determine the instance index range,
it shouldn't exceed the bits number of instance_mask,
otherwise the bitops of instance_mask may cross boundaries

Fixes: 9f599f351e86 ("media: amphion: add vpu core driver")
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ming Qian <ming.qian@nxp.com>
---
 drivers/media/platform/amphion/vpu_core.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c
index 43d85a54268b..6f054700d5db 100644
--- a/drivers/media/platform/amphion/vpu_core.c
+++ b/drivers/media/platform/amphion/vpu_core.c
@@ -88,6 +88,8 @@  static int vpu_core_boot_done(struct vpu_core *core)
 
 		core->supported_instance_count = min(core->supported_instance_count, count);
 	}
+	if (core->supported_instance_count >= BITS_PER_TYPE(core->instance_mask))
+		core->supported_instance_count = BITS_PER_TYPE(core->instance_mask);
 	core->fw_version = fw_version;
 	vpu_core_set_state(core, VPU_CORE_ACTIVE);