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Message-ID: <202008161912.jRyQUNBM%lkp@intel.com>
Date:   Sun, 16 Aug 2020 19:25:17 +0800
From:   kernel test robot <lkp@...el.com>
To:     Samuel Thibault <samuel.thibault@...-lyon.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: drivers/accessibility/speakup/serialio.c:139:9: sparse: sparse: cast
 removes address space '__iomem' of expression

Hi Samuel,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4b6c093e21d36bede0fd88fd0aeb3b03647260e4
commit: 2067fd92d75b6d9085a43caf050bca5d88c491b8 staging/speakup: Move out of staging
date:   3 weeks ago
config: riscv-randconfig-s031-20200816 (attached as .config)
compiler: riscv32-linux-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: v0.6.2-180-g49f7e13a-dirty
        git checkout 2067fd92d75b6d9085a43caf050bca5d88c491b8
        # 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=riscv 

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


sparse warnings: (new ones prefixed by >>)

>> drivers/accessibility/speakup/serialio.c:139:9: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/accessibility/speakup/serialio.c:139:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
>> drivers/accessibility/speakup/serialio.c:139:9: sparse:     expected void volatile [noderef] __iomem *addr
>> drivers/accessibility/speakup/serialio.c:139:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:142:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:142:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:142:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:142:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:144:9: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/accessibility/speakup/serialio.c:144:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
>> drivers/accessibility/speakup/serialio.c:144:9: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:144:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:145:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:145:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:145:9: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:145:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:146:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:146:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:146:9: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:146:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:147:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:147:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:147:9: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:147:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:148:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:148:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:148:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:148:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:155:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:155:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:155:16: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:155:16: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:160:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:160:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:160:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:160:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:165:19: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:165:19: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:165:19: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:165:19: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:167:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:167:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:167:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:167:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:87:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:87:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:87:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:87:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:88:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:88:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:88:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:88:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:89:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:89:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:89:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:89:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:90:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:90:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:90:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:90:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:93:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:93:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:93:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:93:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:94:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:94:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:94:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:94:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:97:13: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:97:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:97:13: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:97:13: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:208:9: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:208:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:208:9: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:208:9: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:230:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:230:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:230:16: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:230:16: sparse:     got void *
   drivers/accessibility/speakup/serialio.c:299:25: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/accessibility/speakup/serialio.c:299:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/accessibility/speakup/serialio.c:299:25: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/accessibility/speakup/serialio.c:299:25: sparse:     got void *
   drivers/accessibility/speakup/serialio.c: note: in included file (through arch/riscv/include/asm/io.h, include/linux/io.h, include/linux/irq.h, ...):
   include/asm-generic/io.h:556:16: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:556:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   include/asm-generic/io.h:556:16: sparse:     expected void const volatile [noderef] __iomem *addr
   include/asm-generic/io.h:556:16: sparse:     got void *
   include/asm-generic/io.h:556:16: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:556:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   include/asm-generic/io.h:556:16: sparse:     expected void const volatile [noderef] __iomem *addr
   include/asm-generic/io.h:556:16: sparse:     got void *
   include/asm-generic/io.h:580:9: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:580:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   include/asm-generic/io.h:580:9: sparse:     expected void volatile [noderef] __iomem *addr
   include/asm-generic/io.h:580:9: sparse:     got void *
   include/asm-generic/io.h:580:9: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:580:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   include/asm-generic/io.h:580:9: sparse:     expected void volatile [noderef] __iomem *addr
   include/asm-generic/io.h:580:9: sparse:     got void *
   include/asm-generic/io.h:556:16: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:556:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   include/asm-generic/io.h:556:16: sparse:     expected void const volatile [noderef] __iomem *addr
   include/asm-generic/io.h:556:16: sparse:     got void *
   include/asm-generic/io.h:556:16: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:556:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   include/asm-generic/io.h:556:16: sparse:     expected void const volatile [noderef] __iomem *addr
   include/asm-generic/io.h:556:16: sparse:     got void *
   include/asm-generic/io.h:556:16: sparse: sparse: cast removes address space '__iomem' of expression
   include/asm-generic/io.h:556:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2067fd92d75b6d9085a43caf050bca5d88c491b8
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 2067fd92d75b6d9085a43caf050bca5d88c491b8
vim +/__iomem +139 drivers/accessibility/speakup/serialio.c

c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  125  
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  126  static void start_serial_interrupt(int irq)
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  127  {
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  128  	int rv;
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  129  
114885e08c0e7d drivers/staging/speakup/serialio.c Shraddha Barke         2015-09-11  130  	if (!synth->read_buff_add)
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  131  		return;
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  132  
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  133  	rv = request_irq(irq, synth_readbuf_handler, IRQF_SHARED,
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  134  			 "serial", (void *)synth_readbuf_handler);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  135  
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  136  	if (rv)
3a046c19158e89 drivers/staging/speakup/serialio.c Keerthimai Janarthanan 2014-03-18  137  		pr_err("Unable to request Speakup serial I R Q\n");
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  138  	/* Set MCR */
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07 @139  	outb(UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2,
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  140  	     speakup_info.port_tts + UART_MCR);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  141  	/* Turn on Interrupts */
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  142  	outb(UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI,
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  143  	     speakup_info.port_tts + UART_IER);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07 @144  	inb(speakup_info.port_tts + UART_LSR);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  145  	inb(speakup_info.port_tts + UART_RX);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  146  	inb(speakup_info.port_tts + UART_IIR);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  147  	inb(speakup_info.port_tts + UART_MSR);
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  148  	outb(1, speakup_info.port_tts + UART_FCR);	/* Turn FIFO On */
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  149  }
c6e3fd22cd5383 drivers/staging/speakup/serialio.c William Hubbs          2010-10-07  150  

:::::: The code at line 139 was first introduced by commit
:::::: c6e3fd22cd538365bfeb82997d5b89562e077d42 Staging: add speakup to the staging directory

:::::: TO: William Hubbs <w.d.hubbs@...il.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...e.de>

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

Download attachment ".config.gz" of type "application/gzip" (29483 bytes)

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