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Date: Mon, 22 Sep 2025 10:02:50 -0700
From: Nathan Chancellor <nathan@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: Qunqin Zhao <zhaoqunqin@loongson.cn>, llvm@lists.linux.dev,
	oe-kbuild-all@lists.linux.dev, Lee Jones <lee@kernel.org>,
	Yinggang Gu <guyinggang@loongson.cn>,
	Huacai Chen <chenhuacai@loongson.cn>,
	Jarkko Sakkinen <jarkko@kernel.org>
Subject: Re: [linux-next:master 4719/11136]
 drivers/char/tpm/tpm_loongson.c:48:10: error: incompatible function pointer
 types initializing 'int (*)(struct tpm_chip *, u8 *, size_t, size_t)' (aka
 'int (*)(struct tpm_chip *, unsigned char *, unsigned long, unsigned long)')
 with an expression of type ...
Message-ID: <20250922170250.GA243363@ax162>
References: <202509211250.mD8JS2nu-lkp@intel.com>
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In-Reply-To: <202509211250.mD8JS2nu-lkp@intel.com>

On Sun, Sep 21, 2025 at 12:32:27PM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   846bd2225ec3cfa8be046655e02b9457ed41973e
> commit: 5c83b07df9c5a6e063328c5b885de79f8e8f0263 [4719/11136] tpm: Add a driver for Loongson TPM device
> config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20250921/202509211250.mD8JS2nu-lkp@intel.com/config)
> compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250921/202509211250.mD8JS2nu-lkp@intel.com/reproduce)
> 
> 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>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202509211250.mD8JS2nu-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
...
> >> drivers/char/tpm/tpm_loongson.c:48:10: error: incompatible function pointer types initializing 'int (*)(struct tpm_chip *, u8 *, size_t, size_t)' (aka 'int (*)(struct tpm_chip *, unsigned char *, unsigned long, unsigned long)') with an expression of type 'int (struct tpm_chip *, u8 *, size_t)' (aka 'int (struct tpm_chip *, unsigned char *, unsigned long)') [-Wincompatible-function-pointer-types]
>       48 |         .send = tpm_loongson_send,
>          |                 ^~~~~~~~~~~~~~~~~
>    1 warning and 1 error generated.

Should be resolved with
https://lore.kernel.org/all/20250917-tpm-loongson-add-bufsiz-v1-1-972a75c0aab2@kernel.org/

Cheers,
Nathan