Re: linux-next: build failure after merge of the driver-core tree

Greg KH
2025-03-12T17:20:51Z

On Wed, Mar 12, 2025 at 10:09:50PM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the driver-core tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> error[E0599]: no method named `readl` found for reference `&Bar<8>` in the current scope
> --> drivers/gpu/nova-core/regs.rs:38:18
> |
> 38 | Self(bar.readl(BOOT0_OFFSET))
> | ^^^^^
> |
> help: there is a method `read8` with a similar name
> |
> 38 | Self(bar.read8(BOOT0_OFFSET))
> | ~~~~~
>
> error: aborting due to 1 previous error
>
> For more information about this error, try `rustc --explain E0599`.
>
> Caused by commit
>
> 354fd6e86fac ("rust: io: rename `io::Io` accessors")
>
> interacting with commit
>
> 54e6baf123fd ("gpu: nova-core: add initial driver stub")
>
> from the drm-nova tree.
>
> I applied the following merge fix patch for today.
>
> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Wed, 12 Mar 2025 21:36:48 +1100
> Subject: [PATCH] fix up for "rust: io: rename `io::Io` accessors"
>
> interacting with "gpu: nova-core: add initial driver stub"
>
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
> drivers/gpu/nova-core/regs.rs | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/nova-core/regs.rs b/drivers/gpu/nova-core/regs.rs
> index 50aefb150b0b..b1a25b86ef17 100644
> --- a/drivers/gpu/nova-core/regs.rs
> +++ b/drivers/gpu/nova-core/regs.rs
> @@ -35,7 +35,7 @@
> impl Boot0 {
> #[inline]
> pub(crate) fn read(bar: &Bar0) -> Self {
> - Self(bar.readl(BOOT0_OFFSET))
> + Self(bar.read32(BOOT0_OFFSET))
> }
>
> #[inline]
> --
> 2.45.2
>

Fix looks good to me, thanks!

greg k-h