[kbuild-all] [linux-next:master 1797/8629] drivers/tty/ipwireless/hardware.c:872:43: sparse: sparse: incorrect type in initializer (different base types)

Friday, 18 September 2020

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   860461e4fcaa76200d2d1a53523e0ff7be92e6e8
commit: 98c2922ec8f0601321428be8c59ae1df255478d1 [1797/8629] ARM: s3c24xx: simplify
mach/io.h
config: arm-randconfig-s031-20200917 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-201-g24bdaac6-dirty
        git checkout 98c2922ec8f0601321428be8c59ae1df255478d1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1
CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;

sparse warnings: (new ones prefixed by >>)

   drivers/tty/ipwireless/hardware.c:431:25: sparse: sparse: cast from restricted __le16
   drivers/tty/ipwireless/hardware.c:445:25: sparse: sparse: cast from restricted __le16
...
> drivers/tty/ipwireless/hardware.c:872:43: sparse: sparse:
incorrect type in initializer (different base types) @@     expected restricted __le16
[usertype] raw_data @@     got unsigned short [usertype] __v @@   
drivers/tty/ipwireless/hardware.c:872:43: sparse:     expected restricted __le16
[usertype] raw_data
...
> drivers/tty/ipwireless/hardware.c:872:43: sparse:     got
unsigned short [usertype] __v    drivers/tty/ipwireless/hardware.c:889:43: sparse:
sparse: incorrect type in initializer (different base types) @@     expected restricted
__le16 [usertype] raw_data @@     got unsigned short [usertype] __v @@
   drivers/tty/ipwireless/hardware.c:889:43: sparse:     expected restricted __le16
[usertype] raw_data
   drivers/tty/ipwireless/hardware.c:889:43: sparse:     got unsigned short [usertype]
__v

#
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi...
git remote add linux-next
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 98c2922ec8f0601321428be8c59ae1df255478d1
vim +872 drivers/tty/ipwireless/hardware.c

099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  850  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  851  /*
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  852   *
Retrieve a packet from the IPW hardware.
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  853  
*/
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  854 
static void do_receive_packet(struct ipw_hardware *hw)
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  855  {
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  856 
	unsigned len;
d4c0deb7009217 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  857 
	unsigned i;
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  858 
	unsigned char pkt[LL_MTU_MAX];
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  859  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  860 
	start_timing();
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  861  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  862  	if
(hw->hw_version == HW_VERSION_1) {
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  863 
		len = inw(hw->base_port + IODRR);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  864 
		if (len > hw->ll_mtu) {
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  865 
			printk(KERN_INFO IPWIRELESS_PCCARD_NAME
622e713e8e207a drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  866  			
      ": received a packet of %u bytes - longer than the MTU!\n", len);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  867 
			outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  868 
			return;
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  869 
		}
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  870  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  871 
		for (i = 0; i < len; i += 2) {
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 @872 
			__le16 raw_data = inw(hw->base_port + IODRR);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  873 
			unsigned short data = le16_to_cpu(raw_data);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  874  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  875 
			pkt[i] = (unsigned char) data;
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  876 
			pkt[i + 1] = (unsigned char) (data >> 8);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  877 
		}
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  878  	}
else {
2e713165f892c8 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  879 
		len = inw(hw->base_port);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  880 
		if (len > hw->ll_mtu) {
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  881 
			printk(KERN_INFO IPWIRELESS_PCCARD_NAME
622e713e8e207a drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  882  			
      ": received a packet of %u bytes - longer than the MTU!\n", len);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  883 
			writew(MEMRX_PCINTACKK,
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  884 
				&hw->memory_info_regs->memreg_pc_interrupt_ack);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  885 
			return;
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  886 
		}
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  887  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  888 
		for (i = 0; i < len; i += 2) {
2e713165f892c8 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  889 
			__le16 raw_data = inw(hw->base_port);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  890 
			unsigned short data = le16_to_cpu(raw_data);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  891  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  892 
			pkt[i] = (unsigned char) data;
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  893 
			pkt[i + 1] = (unsigned char) (data >> 8);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  894 
		}
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  895  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  896 
		while ((i & 3) != 2) {
2e713165f892c8 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  897 
			inw(hw->base_port);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  898 
			i += 2;
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  899 
		}
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  900  	}
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  901  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  902 
	acknowledge_data_read(hw);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  903  
d54c2752f6bb6c drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  904 
	swap_packet_bitfield_from_le(pkt);
d54c2752f6bb6c drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28  905  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  906  	if
(ipwireless_debug)
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  907 
		dump_data_bytes("recv", pkt, len);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  908  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  909 
	handle_received_packet(hw, (union nl_packet *) pkt, len);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  910  
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  911 
	end_read_timing(len);
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  912  }
099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07  913  

:::::: The code at line 872 was first introduced by commit
:::::: 099dc4fb62653f6019d78db55fba7a18ef02d65b ipwireless: driver for PC Card 3G/UMTS
modem

:::::: TO: David Sterba <dsterba(a)suse.cz&gt;
:::::: CC: Linus Torvalds <torvalds(a)woody.linux-foundation.org&gt;

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

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[kbuild-all] [linux-next:master 1797/8629] drivers/tty/ipwireless/hardware.c:872:43: sparse: sparse: incorrect type in initializer (different base types)