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From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Bernd Kuhls <bernd@kuhls.net>
Cc: buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 1/1] package/dahdi-linux: bump version
Date: Tue, 3 Feb 2026 23:51:59 +0100	[thread overview]
Message-ID: <aYJ7ap2sv4o4DSkR@windsurf> (raw)
In-Reply-To: <20251018181602.1756789-1-bernd@kuhls.net>

On Sat, Oct 18, 2025 at 08:16:02PM +0200, Bernd Kuhls wrote:
> While trying to fix build errors with version 3.3.0 and newer kernels
> some of the upstream patches could not be applied neither to the version
> currently provided by buildroot nor 3.4.0 without backporting.

[...]

Thanks for the patch, but unfortunately it doesn't work, and I believe
we have to remove this package as it cannot be fixed I believe.

It fails to build with:

ERROR: modpost: "crc_ccitt_table" [dahdi.ko] undefined!
ERROR: modpost: "crc_ccitt_table" [wctdm24xxp/wctdm24xxp.ko] undefined!

This shouldn't happen because we do have:

define DAHDI_LINUX_LINUX_CONFIG_FIXUPS
	$(call KCONFIG_ENABLE_OPT,CONFIG_CRC_CCITT)
endef

but the trick is that since Linux 6.15, lib/crc/ has been
significantly rewritte, and CONFIG_CRC_CCITT is now a blind option, so
we can't enable it anymore. The only way to enable it is to select
it... but that requires drivers that are in-tree. I've tried to find
another kernel option that selects CONFIG_CRC_CCITT, but none of the
ones that select it look generic enough to be used as a workaround to
get CONFIG_CRC_CCITT. So I'm tempted to say that we should remove
dahdi-linux. It is badly maintained, and should have been upstreamed
into the Linux kernel.

Best regards,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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      reply	other threads:[~2026-02-03 22:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-18 18:16 [Buildroot] [PATCH 1/1] package/dahdi-linux: bump version Bernd Kuhls
2026-02-03 22:51 ` Thomas Petazzoni via buildroot [this message]

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