Re: [v6] serial: 8250_dw: Add support for big-endian MMIO accesses

[kbuild test robot]

Hi Noam,

[auto build test WARNING on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: x86_64-randconfig-i0-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/tty/serial/8250/8250_dw.c: In function '_dw8250_serial_in32be':
>> drivers/tty/serial/8250/8250_dw.c:214:20: warning: passing argument 1 of 'ioread32be' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     return ioread32be(addr);
                       ^
   In file included from arch/x86/include/asm/io.h:203:0,
                    from include/linux/io.h:25,
                    from drivers/tty/serial/8250/8250_dw.c:17:
   include/asm-generic/iomap.h:32:21: note: expected 'void *' but argument is of type 'const void *'
    extern unsigned int ioread32be(void __iomem *);
                        ^

vim +214 drivers/tty/serial/8250/8250_dw.c

   198	}
   199	
   200	static unsigned int dw8250_serial_in32(struct uart_port *p, int offset)
   201	{
   202		unsigned int value = readl(p->membase + (offset << p->regshift));
   203	
   204		return dw8250_modify_msr(p, offset, value);
   205	}
   206	
   207	static void _dw8250_serial_out32be(unsigned int value, void __iomem *addr)
   208	{
   209		iowrite32be(value, addr);
   210	}
   211	
   212	static unsigned int _dw8250_serial_in32be(const void __iomem *addr)
   213	{
 > 214		return ioread32be(addr);
   215	}
   216	
   217	static void dw8250_serial_out32be(struct uart_port *p, int offset, int value)
   218	{
   219		iowrite32be(value, p->membase + (offset << p->regshift));
   220		dw8250_check_LCR(p, offset, value);
   221	}
   222	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: Binary data