[PATCH 2/3] gpu: nova-core: bitfield: simplify expression

Alexandre Courbot
Wed, 22 Oct 2025 10:50:57 -0000

The shift is more easily expressed by the index of the lowest bit of the
field.

Reported-by: Edwin Peer <epeer at nvidia.com>
Link:
https://lore.kernel.org/rust-for-linux/F3853912-2C1C-4F9B-89B0-3168689F35B3 at
nvidia.com/
Signed-off-by: Alexandre Courbot <acourbot at nvidia.com>
---
 drivers/gpu/nova-core/bitfield.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/nova-core/bitfield.rs
b/drivers/gpu/nova-core/bitfield.rs
index 136de7289162..f113439c6501 100644
--- a/drivers/gpu/nova-core/bitfield.rs
+++ b/drivers/gpu/nova-core/bitfield.rs
@@ -268,7 +268,7 @@ impl $name {
                 _ => ::kernel::build_error!("Unsupported storage type
size")
             }
         };
-        const [<$field:upper _SHIFT>]: u32 = Self::[<$field:upper
_MASK>].trailing_zeros();
+        const [<$field:upper _SHIFT>]: u32 = $lo;
         );

         $(

--
2.51.0