CC: [email protected]
CC: [email protected]
TO: Bartlomiej Zolnierkiewicz <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   3fb6d0e00efc958d01c2f109c8453033a2d96796
commit: 3d3287e609877aa549b1cbb41eafaf73c3742a0b video: fbdev: arcfb: add 
COMPILE_TEST support
date:   12 months ago
:::::: branch date: 11 hours ago
:::::: commit date: 12 months ago
config: parisc-randconfig-m031-20210227 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>

smatch warnings:
drivers/video/fbdev/arcfb.c:120 ks108_writeb_ctl() warn: ignoring unreachable 
code.
drivers/video/fbdev/arcfb.c:129 ks108_writeb_mainctl() warn: ignoring 
unreachable code.
drivers/video/fbdev/arcfb.c:143 ks108_writeb_data() warn: ignoring unreachable 
code.

vim +120 drivers/video/fbdev/arcfb.c

1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  113  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  114  static void 
ks108_writeb_ctl(struct arcfb_par *par,
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  115                 
                unsigned int chipindex, unsigned char value)
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  116  {
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  117         
unsigned char chipselval = par->cslut[chipindex];
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  118  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  119         
outb(chipselval|KS_CEHI|KS_SEL_CMD, par->cio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21 @120         
outb(value, par->dio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  121         
udelay(tuhold);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  122         
outb(chipselval|KS_CELO|KS_SEL_CMD, par->cio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  123  }
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  124  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  125  static void 
ks108_writeb_mainctl(struct arcfb_par *par, unsigned char value)
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  126  {
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  127  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  128         
outb(value, par->cio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21 @129         
udelay(tuhold);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  130  }
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  131  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  132  static 
unsigned char ks108_readb_ctl2(struct arcfb_par *par)
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  133  {
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  134         return 
inb(par->c2io_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  135  }
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  136  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  137  static void 
ks108_writeb_data(struct arcfb_par *par,
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  138                 
                unsigned int chipindex, unsigned char value)
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  139  {
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  140         
unsigned char chipselval = par->cslut[chipindex];
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  141  
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  142         
outb(chipselval|KS_CEHI|KS_SEL_DATA, par->cio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21 @143         
outb(value, par->dio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  144         
udelay(tuhold);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  145         
outb(chipselval|KS_CELO|KS_SEL_DATA, par->cio_addr);
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  146  }
1154ea7dcd8eed drivers/video/arcfb.c Jaya Kumar 2005-06-21  147  

:::::: The code at line 120 was first introduced by commit
:::::: 1154ea7dcd8eed758fb5ec47393a79d5a1f0bc43 [PATCH] Framebuffer driver for 
Arc LCD board

:::::: TO: Jaya Kumar <[email protected]>
:::::: CC: Linus Torvalds <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

Attachment: .config.gz
Description: application/gzip

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