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

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Message-ID: <2025031235-trailside-unexpired-88c6@gregkh>
Date: Wed, 12 Mar 2025 18:20:45 +0100
From: Greg KH <greg@...ah.com>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Danilo Krummrich <dakr@...nel.org>, Fiona Behrens <me@...enk.dev>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the driver-core tree

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@...b.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@...b.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