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Message-ID: <b4d5a179-b0b6-403d-bedc-56b3ae69cadb@solid-run.com>
Date: Thu, 5 Feb 2026 20:11:04 +0000
From: Josua Mayer <josua@...id-run.com>
To: Mark Brown <broonie@...nel.org>, Ulf Hansson <ulf.hansson@...aro.org>,
Wolfram Sang <wsa+renesas@...g-engineering.com>
CC: 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 mmc tree
Hi Mark,
On 2/5/26 15:33, Mark Brown wrote:
> Hi all,
>
> After merging the mmc tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> /tmp/next/build/drivers/mux/core.c:312:14: error: redefinition of 'mux_control_states'
> 312 | unsigned int mux_control_states(struct mux_control *mux)
> | ^~~~~~~~~~~~~~~~~~
> In file included from /tmp/next/build/drivers/mux/core.c:19:
> /tmp/next/build/include/linux/mux/consumer.h:70:28: note: previous definition of 'mux_control_states' with type 'unsigned int(struct mux_control *)'
> 70 | static inline unsigned int mux_control_states(struct mux_control *mux)
> | ^~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:375:5: error: redefinition of 'mux_control_select_delay'
> 375 | int mux_control_select_delay(struct mux_control *mux, unsigned int state,
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:74:32: note: previous definition of 'mux_control_select_delay' with type 'int(struct mux_control *, unsigned int, unsigned int)'
> 74 | static inline int __must_check mux_control_select_delay(struct mux_control *mux,
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:413:5: error: redefinition of 'mux_state_select_delay'
> 413 | int mux_state_select_delay(struct mux_state *mstate, unsigned int delay_us)
> | ^~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:79:32: note: previous definition of 'mux_state_select_delay' with type 'int(struct mux_state *, unsigned int)'
> 79 | static inline int __must_check mux_state_select_delay(struct mux_state *mstate,
> | ^~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:435:5: error: redefinition of 'mux_control_try_select_delay'
> 435 | int mux_control_try_select_delay(struct mux_control *mux, unsigned int state,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:84:32: note: previous definition of 'mux_control_try_select_delay' with type 'int(struct mux_control *, unsigned int, unsigned int)'
> 84 | static inline int __must_check mux_control_try_select_delay(struct mux_control *mux,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:469:5: error: redefinition of 'mux_state_try_select_delay'
> 469 | int mux_state_try_select_delay(struct mux_state *mstate, unsigned int delay_us)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:90:32: note: previous definition of 'mux_state_try_select_delay' with type 'int(struct mux_state *, unsigned int)'
> 90 | static inline int __must_check mux_state_try_select_delay(struct mux_state *mstate,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:487:5: error: redefinition of 'mux_control_deselect'
> 487 | int mux_control_deselect(struct mux_control *mux)
> | ^~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:118:19: note: previous definition of 'mux_control_deselect' with type 'int(struct mux_control *)'
> 118 | static inline int mux_control_deselect(struct mux_control *mux)
> | ^~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:513:5: error: redefinition of 'mux_state_deselect'
> 513 | int mux_state_deselect(struct mux_state *mstate)
> | ^~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:122:19: note: previous definition of 'mux_state_deselect' with type 'int(struct mux_state *)'
> 122 | static inline int mux_state_deselect(struct mux_state *mstate)
> | ^~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:636:21: error: redefinition of 'mux_control_get'
> 636 | struct mux_control *mux_control_get(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:127:35: note: previous definition of 'mux_control_get' with type 'struct mux_control *(struct device *, const char *)'
> 127 | static inline struct mux_control *mux_control_get(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:655:21: error: redefinition of 'mux_control_get_optional'
> 655 | struct mux_control *mux_control_get_optional(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:131:35: note: previous definition of 'mux_control_get_optional' with type 'struct mux_control *(struct device *, const char *)'
> 131 | static inline struct mux_control *mux_control_get_optional(struct device *dev,
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:667:6: error: redefinition of 'mux_control_put'
> 667 | void mux_control_put(struct mux_control *mux)
> | ^~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:136:20: note: previous definition of 'mux_control_put' with type 'void(struct mux_control *)'
> 136 | static inline void mux_control_put(struct mux_control *mux) {}
> | ^~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:688:21: error: redefinition of 'devm_mux_control_get'
> 688 | struct mux_control *devm_mux_control_get(struct device *dev,
> | ^~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:138:35: note: previous definition of 'devm_mux_control_get' with type 'struct mux_control *(struct device *, const char *)'
> 138 | static inline struct mux_control *devm_mux_control_get(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:831:19: error: redefinition of 'devm_mux_state_get'
> 831 | struct mux_state *devm_mux_state_get(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:142:33: note: previous definition of 'devm_mux_state_get' with type 'struct mux_state *(struct device *, const char *)'
> 142 | static inline struct mux_state *devm_mux_state_get(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:848:19: error: redefinition of 'devm_mux_state_get_optional'
> 848 | struct mux_state *devm_mux_state_get_optional(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:146:33: note: previous definition of 'devm_mux_state_get_optional' with type 'struct mux_state *(struct device *, const char *)'
> 146 | static inline struct mux_state *devm_mux_state_get_optional(struct device *dev,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:866:19: error: redefinition of 'devm_mux_state_get_selected'
> 866 | struct mux_state *devm_mux_state_get_selected(struct device *dev, const char *mux_name)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:151:33: note: previous definition of 'devm_mux_state_get_selected' with type 'struct mux_state *(struct device *, const char *)'
> 151 | static inline struct mux_state *devm_mux_state_get_selected(struct device *dev,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/drivers/mux/core.c:885:19: error: redefinition of 'devm_mux_state_get_optional_selected'
> 885 | struct mux_state *devm_mux_state_get_optional_selected(struct device *dev,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/mux/consumer.h:156:33: note: previous definition of 'devm_mux_state_get_optional_selected' with type 'struct mux_state *(struct device *, const char *)'
> 156 | static inline struct mux_state *devm_mux_state_get_optional_selected(struct device *dev,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Caused by commit
>
> ad314348ceb4f (mux: Add helper functions for getting optional and selected mux-state)
I am puzzled by this result, and trying to debug but x86 allmodconfig
is a very slow build on my laptop.
The static inline function declarations from the errors are in the else
case if an ifdef CONIG_MULTIPLEXER.
The mux.c should only be compiled if CONFIG_MULTIPLEXER is defined,
based on drivers/mux/Makefile:
mux-core-objs := core.o
obj-$(CONFIG_MULTIPLEXER) += mux-core.o
I don't understand how it is possible for mux.c to be compiled,
while at the same time CONFIG_MULTIPLEXER is not defined.
Any ideas?
>
> I have used the version from next-20260204 insted.
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