Messages in this thread | | | Date | Mon, 9 Sep 2019 16:28:10 +0800 | From | kbuild test robot <> | Subject | drivers/video/fbdev/vt8500lcdfb.c:229:6: warning: this statement may fall through |
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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 <lkp@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 <alchark@gmail.com> :::::: CC: Paul Mundt <lethal@linux-sh.org>
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