On Mon, 2017-07-31 at 13:05 +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git > tty-next > head: 065ea0a7afd64d6cf3464bdd1d8cd227527e2045 > commit: c7ac15ce89242e3c25fcc49fa4d00028285fab05 [34/39] serial: core: > move UPF_NO_TXEN_TEST to quirks and rename > config: cris-allyesconfig (attached as .config) > compiler: cris-linux-gcc (GCC) 6.2.0 > reproduce: > wget https://raw.githubusercontent.com/01org/lkp-tests/master/ > sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout c7ac15ce89242e3c25fcc49fa4d00028285fab05 > # save the attached .config to linux build tree > make.cross ARCH=cris > > All errors (new ones prefixed by >>): > > drivers/tty/serial/8250/8250_core.c: In function > 'univ8250_release_irq': > drivers/tty/serial/8250/8250_core.c:235:19: warning: 'i' may be > used uninitialized in this function [-Wmaybe-uninitialized] > struct irq_info *i; > ^ This one is known false positive (see comment in the code) > drivers/tty/serial/8250/8250_core.c: In function > 'serial8250_unregister_port': > > > drivers/tty/serial/8250/8250_core.c:1094:1: error: unrecognizable > > > insn: > > } > ^ > (insn 121 120 92 5 (set (reg:QI 9 r9 [95]) > (ior:QI (mem:QI (reg/f:SI 10 r10 [87]) [0 MEM[(struct > uart_8250_port *)&serial8250_ports][line_3(D)].port.quirks+0 S1 A8]) > (reg:QI 9 r9 [89]))) > drivers/tty/serial/8250/8250_core.c:502 -1 > (nil)) LISP detected! > > > drivers/tty/serial/8250/8250_core.c:1094:1: internal compiler > > > error: in extract_insn, at recog.c:2287 Oh, yeah, indeed. P.S. I'm not familiar with cris arch, so, it might be the bug in the code as well that triggers internal bug in gcc... -- Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
