Re: [PATCH v5 2/7] mux: Add helper functions for getting optional and selected mux-state

[kernel test robot <lkp@intel.com>]

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Hi Josua,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 8f0b4cce4481fb22653697cced8d0d04027cb1e8]

url:    https://github.com/intel-lab-lkp/linux/commits/Josua-Mayer/phy-can-transceiver-rename-temporary-helper-function-to-avoid-conflict/20260118-183905
base:   8f0b4cce4481fb22653697cced8d0d04027cb1e8
patch link:    https://lore.kernel.org/r/20260118-rz-sdio-mux-v5-2-3c37e8872683%40solid-run.com
patch subject: [PATCH v5 2/7] mux: Add helper functions for getting optional and selected mux-state
:::::: branch date: 7 hours ago
:::::: commit date: 7 hours ago
config: i386-randconfig-054-20260118 (https://download.01.org/0day-ci/archive/20260119/202601190136.Fpl1Voph-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Julia Lawall <julia.lawall@inria.fr>
| Closes: https://lore.kernel.org/r/202601190136.Fpl1Voph-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> drivers/mux/core.c:721:18-24: ERROR: reference preceded by free on line 720

vim +721 drivers/mux/core.c

a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin 2017-05-14  702  
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  703  /*
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  704   * mux_state_get() - Get the mux-state for a device.
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  705   * @dev: The device that needs a mux-state.
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  706   * @mux_name: The name identifying the mux-state.
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  707   *
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  708   * Return: A pointer to the mux-state, or an ERR_PTR with a negative errno.
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  709   */
f7086d2a8ffae3 drivers/mux/core.c     Josua Mayer 2026-01-18  710  static struct mux_state *mux_state_get(struct device *dev, const char *mux_name, bool optional)
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  711  {
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  712  	struct mux_state *mstate;
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  713  
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  714  	mstate = kzalloc(sizeof(*mstate), GFP_KERNEL);
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  715  	if (!mstate)
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  716  		return ERR_PTR(-ENOMEM);
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  717  
f7086d2a8ffae3 drivers/mux/core.c     Josua Mayer 2026-01-18  718  	mstate->mux = mux_get(dev, mux_name, &mstate->state, optional);
f7086d2a8ffae3 drivers/mux/core.c     Josua Mayer 2026-01-18  719  	if (IS_ERR_OR_NULL(mstate->mux)) {
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07 @720  		kfree(mstate);
f7086d2a8ffae3 drivers/mux/core.c     Josua Mayer 2026-01-18 @721  		return ERR_CAST(mstate->mux);
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  722  	}
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  723  
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  724  	return mstate;
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  725  }
6632866df852bd drivers/mux/core.c     Peter Rosin 2022-01-07  726  

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