rnull: replace `kernel::c_str!` with C-Strings

C-String literals were added in Rust 1.77. Replace instances of
`kernel::c_str!` with C-String literals where possible.

Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/rnull/configfs.rs b/drivers/block/rnull/configfs.rs
index 6713a6d92391d9e4a70491fa0cc0c34fe4a8d859..2f5a7da03af5dc292c394d7ad80a5548d0c82dbd 100644 (file)
--- a/drivers/block/rnull/configfs.rs
+++ b/drivers/block/rnull/configfs.rs
@@ -25,7 +25,7 @@ pub(crate) fn subsystem() -> impl PinInit<kernel::configfs::Subsystem<Config>, E
         ],
     };
 
-    kernel::configfs::Subsystem::new(c_str!("rnull"), item_type, try_pin_init!(Config {}))
+    kernel::configfs::Subsystem::new(c"rnull", item_type, try_pin_init!(Config {}))
 }
 
 #[pin_data]