linux-kernel - Re: linux-next: build warning in Linus' tree

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Message-Id: <20251127104257.862f0bb753226111ff09acbc@linux-foundation.org>
Date: Thu, 27 Nov 2025 10:42:57 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Alexey Skidanov
 <alexey.skidanov@...el.com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: Re: linux-next: build warning in Linus' tree

On Thu, 27 Nov 2025 13:06:24 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:

> Hi all,
> 
> In Linus' tree, today's linux-next build (htmldocs) produced this
> warning:
> 
> WARNING: /home/sfr/kernels/next/next/include/linux/genalloc.h:52 function parameter 'start_addr' not described in 'genpool_algo_t'
> 
> Introduced by commit
> 
>   52fbf1134d47 ("lib/genalloc.c: fix allocation of aligned buffer from non-aligned chunk")
> 
> This has been exposed recently after a bug was fixed that caused some
> warnings to not be reported.

Thanks.  I think I can handle this one.  Just.


--- a/include/linux/genalloc.h~genalloch-fix-htmldocs-warning
+++ a/include/linux/genalloc.h
@@ -44,6 +44,7 @@ struct gen_pool;
  * @nr: The number of zeroed bits we're looking for
  * @data: optional additional data used by the callback
  * @pool: the pool being allocated from
+ * @start_addr: start address of memory chunk
  */
 typedef unsigned long (*genpool_algo_t)(unsigned long *map,
 			unsigned long size,
_