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Signed-off-by: Alexandre Courbot Reviewed-by: Alistair Popple --- rust/kernel/transmute.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/rust/kernel/transmute.rs b/rust/kernel/transmute.rs index be5dbf3829e2..8d78c81e3749 100644 --- a/rust/kernel/transmute.rs +++ b/rust/kernel/transmute.rs @@ -170,6 +170,9 @@ macro_rules! impl_frombytes { } =20 impl_frombytes! { + // SAFETY: This type is empty and thus does not consume any data. + (), + // SAFETY: All bit patterns are acceptable values of the types below. u8, u16, u32, u64, usize, i8, i16, i32, i64, isize, @@ -230,6 +233,9 @@ macro_rules! impl_asbytes { } =20 impl_asbytes! { + // SAFETY: This type is empty and thus returns an empty slice. + (), + // SAFETY: Instances of the following types have no uninitialized port= ions. u8, u16, u32, u64, usize, i8, i16, i32, i64, isize, --=20 2.52.0 From nobody Fri Dec 19 11:30:22 2025 Received: from SJ2PR03CU001.outbound.protection.outlook.com (mail-westusazon11012018.outbound.protection.outlook.com [52.101.43.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0FF873191CF; 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We can use it now that `()` implements `FromBytes`. Signed-off-by: Alexandre Courbot Reviewed-by: Alistair Popple --- drivers/gpu/nova-core/gsp/commands.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/nova-core/gsp/commands.rs b/drivers/gpu/nova-core/= gsp/commands.rs index 0425c65b5d6f..2050771f9b53 100644 --- a/drivers/gpu/nova-core/gsp/commands.rs +++ b/drivers/gpu/nova-core/gsp/commands.rs @@ -142,7 +142,7 @@ fn init_variable_payload( } =20 /// Message type for GSP initialization done notification. -struct GspInitDone {} +struct GspInitDone; =20 // SAFETY: `GspInitDone` is a zero-sized type with no bytes, therefore it // trivially has no uninitialized bytes. @@ -151,13 +151,13 @@ unsafe impl FromBytes for GspInitDone {} impl MessageFromGsp for GspInitDone { const FUNCTION: MsgFunction =3D MsgFunction::GspInitDone; type InitError =3D Infallible; - type Message =3D GspInitDone; + type Message =3D (); =20 fn read( _msg: &Self::Message, _sbuffer: &mut SBufferIter>, ) -> Result { - Ok(GspInitDone {}) + Ok(GspInitDone) } } =20 --=20 2.52.0