linux-kernel - drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:114:10: warning: implicit conversion from 'enum mt76_cipher_type' to 'enum mcu_cipher

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Date:   Thu, 15 Jul 2021 00:04:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ryder Lee <ryder.lee@...iatek.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Felix Fietkau <nbd@....name>,
        Xing Song <xing.song@...iatek.com>
Subject: drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:114:10: warning:
 implicit conversion from 'enum mt76_cipher_type' to 'enum mcu_cipher_type'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   40226a3d96ef8ab8980f032681c8bfd46d63874e
commit: c368362c36d3d4cedbc9a1c9caa95960912cc429 mt76: fix iv and CCMP header insertion
date:   4 weeks ago
config: i386-randconfig-s002-20210714 (attached as .config)
compiler: gcc-10 (Debian 10.2.1-6) 10.2.1 20210110
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c368362c36d3d4cedbc9a1c9caa95960912cc429
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout c368362c36d3d4cedbc9a1c9caa95960912cc429
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   drivers/net/wireless/mediatek/mt76/mt7915/mcu.c: In function 'mt7915_mcu_get_cipher':
>> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:114:10: warning: implicit conversion from 'enum mt76_cipher_type' to 'enum mcu_cipher_type' [-Wenum-conversion]
     114 |   return MT_CIPHER_NONE;
         |          ^~~~~~~~~~~~~~


vim +114 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

c336318f57a92d Ryder Lee 2020-04-25   90  
c368362c36d3d4 Ryder Lee 2021-06-17   91  static enum mcu_cipher_type
e57b7901469fc0 Ryder Lee 2020-04-25   92  mt7915_mcu_get_cipher(int cipher)
e57b7901469fc0 Ryder Lee 2020-04-25   93  {
e57b7901469fc0 Ryder Lee 2020-04-25   94  	switch (cipher) {
e57b7901469fc0 Ryder Lee 2020-04-25   95  	case WLAN_CIPHER_SUITE_WEP40:
c368362c36d3d4 Ryder Lee 2021-06-17   96  		return MCU_CIPHER_WEP40;
e57b7901469fc0 Ryder Lee 2020-04-25   97  	case WLAN_CIPHER_SUITE_WEP104:
c368362c36d3d4 Ryder Lee 2021-06-17   98  		return MCU_CIPHER_WEP104;
e57b7901469fc0 Ryder Lee 2020-04-25   99  	case WLAN_CIPHER_SUITE_TKIP:
c368362c36d3d4 Ryder Lee 2021-06-17  100  		return MCU_CIPHER_TKIP;
e57b7901469fc0 Ryder Lee 2020-04-25  101  	case WLAN_CIPHER_SUITE_AES_CMAC:
c368362c36d3d4 Ryder Lee 2021-06-17  102  		return MCU_CIPHER_BIP_CMAC_128;
e57b7901469fc0 Ryder Lee 2020-04-25  103  	case WLAN_CIPHER_SUITE_CCMP:
c368362c36d3d4 Ryder Lee 2021-06-17  104  		return MCU_CIPHER_AES_CCMP;
e57b7901469fc0 Ryder Lee 2020-04-25  105  	case WLAN_CIPHER_SUITE_CCMP_256:
c368362c36d3d4 Ryder Lee 2021-06-17  106  		return MCU_CIPHER_CCMP_256;
e57b7901469fc0 Ryder Lee 2020-04-25  107  	case WLAN_CIPHER_SUITE_GCMP:
c368362c36d3d4 Ryder Lee 2021-06-17  108  		return MCU_CIPHER_GCMP;
e57b7901469fc0 Ryder Lee 2020-04-25  109  	case WLAN_CIPHER_SUITE_GCMP_256:
c368362c36d3d4 Ryder Lee 2021-06-17  110  		return MCU_CIPHER_GCMP_256;
e57b7901469fc0 Ryder Lee 2020-04-25  111  	case WLAN_CIPHER_SUITE_SMS4:
c368362c36d3d4 Ryder Lee 2021-06-17  112  		return MCU_CIPHER_WAPI;
e57b7901469fc0 Ryder Lee 2020-04-25  113  	default:
e57b7901469fc0 Ryder Lee 2020-04-25 @114  		return MT_CIPHER_NONE;
e57b7901469fc0 Ryder Lee 2020-04-25  115  	}
e57b7901469fc0 Ryder Lee 2020-04-25  116  }
e57b7901469fc0 Ryder Lee 2020-04-25  117  

:::::: The code at line 114 was first introduced by commit
:::::: e57b7901469fc0b021930b83a8094baaf3d81b09 mt76: add mac80211 driver for MT7915 PCIe-based chipsets

:::::: TO: Ryder Lee <ryder.lee@...iatek.com>
:::::: CC: Felix Fietkau <nbd@....name>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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