tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git master head: f74c2bb98776e2de508f4d607cd519873065118e commit: a035d552a93bb9ef6048733bb9f2a0dc857ff869 Makefile: Globally enable fall-through warning date: 6 weeks ago config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout a035d552a93bb9ef6048733bb9f2a0dc857ff869 # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>
All warnings (new ones prefixed by >>):
drivers/video/fbdev/vt8500lcdfb.c: In function 'vt8500lcd_blank':
>> drivers/video/fbdev/vt8500lcdfb.c:229:6: warning: this statement may fall
>> through [-Wimplicit-fallthrough=]
if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR ||
^
drivers/video/fbdev/vt8500lcdfb.c:233:2: note: here
case FB_BLANK_UNBLANK:
^~~~
vim +229 drivers/video/fbdev/vt8500lcdfb.c
d6ff7d0fe22cdf drivers/video/vt8500lcdfb.c Alexey Charkov 2010-11-09 213
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 214 /*
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 215 *
vt8500lcd_blank():
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 216 *
Blank the display by setting all palette values to zero. Note,
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 217 *
True Color modes do not really use the palette, so this will not
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 218 *
blank the display in all modes.
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 219 */
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 220
static int vt8500lcd_blank(int blank, struct fb_info *info)
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 221 {
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 222
int i;
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 223
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 224
switch (blank) {
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 225
case FB_BLANK_POWERDOWN:
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 226
case FB_BLANK_VSYNC_SUSPEND:
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 227
case FB_BLANK_HSYNC_SUSPEND:
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 228
case FB_BLANK_NORMAL:
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 @229
if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR ||
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 230
info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 231
for (i = 0; i < 256; i++)
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 232
vt8500lcd_setcolreg(i, 0, 0, 0, 0, info);
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 233
case FB_BLANK_UNBLANK:
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 234
if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR ||
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 235
info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 236
fb_set_cmap(&info->cmap, info);
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 237
}
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 238
return 0;
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 239 }
e41f1a98940824 drivers/video/vt8500lcdfb.c Alexey Charkov 2011-01-12 240
:::::: The code at line 229 was first introduced by commit
:::::: e41f1a98940824ad0c95271e69939acdc6092e5f fbdev: Implement simple
blanking in pseudocolor modes for vt8500lcdfb
:::::: TO: Alexey Charkov <alch...@gmail.com>
:::::: CC: Paul Mundt <let...@linux-sh.org>
---
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.config.gz
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