On Mon, Nov 30, 2015 at 10:29:26PM +0100, Rasmus Villemoes wrote: > OK, thanks. That's a very very long time ago. > > FWIW, the remaining instances that my trivial coccinelle script found > are After your initial report I also wrote a coccinelle which is looking also for delay loops implemented in while loops. It found the following two: diff -u -p ./drivers/video/uvesafb.c /tmp/nothing/drivers/video/uvesafb.c --- ./drivers/video/uvesafb.c +++ /tmp/nothing/drivers/video/uvesafb.c @@ -1142,7 +1142,6 @@ static int uvesafb_blank(int blank, stru vga_wseq(NULL, 0x00, seq); crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80; - while (loop--); vga_wcrt(NULL, 0x17, crtc17); vga_wseq(NULL, 0x00, 0x03); } else diff -u -p ./arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c /tmp/nothing/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c --- ./arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c +++ /tmp/nothing/arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c @@ -37,7 +37,6 @@ static void delay(int delay) { - while (delay--); } static void send_bit(unsigned char bit) The 2nd file falls into my domain so I'm going to fix it. Not sure how the uvesafb one should be treated. Ralf