Clearly a bug. On Tue, 4 Nov 2014, kbuild test robot wrote:
> TO: Mauro Carvalho Chehab <[email protected]> > CC: [email protected] > > tree: git://linuxtv.org/media_tree.git master > head: ed3da2bf2e1800e7c6e31e7d31917dacce599458 > commit: b7085c08647598aafbf8f6223ebcdd413745449c [489/499] [media] cx231xx: > convert from pr_foo to dev_foo > :::::: branch date: 81 minutes ago > :::::: commit date: 2 hours ago > > >> drivers/media/usb/cx231xx/cx231xx-audio.c:445:16-20: ERROR: dev is NULL > >> but dereferenced. > > git remote add linuxtv-media git://linuxtv.org/media_tree.git > git remote update linuxtv-media > git checkout b7085c08647598aafbf8f6223ebcdd413745449c > vim +445 drivers/media/usb/cx231xx/cx231xx-audio.c > > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 429 .buffer_bytes_max = 62720 * 8, /* just about the value in > usbaudio.c */ > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 430 .period_bytes_min = 64, /* 12544/2, */ > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 431 .period_bytes_max = 12544, > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 432 .periods_min = 2, > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 433 .periods_max = 98, /* 12544, */ > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 434 }; > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 435 > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 436 static int snd_cx231xx_capture_open(struct snd_pcm_substream > *substream) > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 437 { > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 438 struct cx231xx *dev = snd_pcm_substream_chip(substream); > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 439 struct snd_pcm_runtime *runtime = substream->runtime; > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 440 int ret = 0; > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 441 > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 442 dprintk("opening device and trying to acquire exclusive > lock\n"); > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 443 > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 444 if (!dev) { > b7085c08 drivers/media/usb/cx231xx/cx231xx-audio.c Mauro Carvalho Chehab > 2014-11-02 @445 dev_err(&dev->udev->dev, > b7085c08 drivers/media/usb/cx231xx/cx231xx-audio.c Mauro Carvalho Chehab > 2014-11-02 446 "BUG: cx231xx can't find device struct. > Can't proceed with open\n"); > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 447 return -ENODEV; > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 448 } > e0d3bafd drivers/media/video/cx231xx/cx231xx-audio.c Sri Deevi > 2009-03-03 449 > 990862a2 drivers/media/video/cx231xx/cx231xx-audio.c Mauro Carvalho Chehab > 2012-01-10 450 if (dev->state & DEV_DISCONNECTED) { > b7085c08 drivers/media/usb/cx231xx/cx231xx-audio.c Mauro Carvalho Chehab > 2014-11-02 451 dev_err(&dev->udev->dev, > b7085c08 drivers/media/usb/cx231xx/cx231xx-audio.c Mauro Carvalho Chehab > 2014-11-02 452 "Can't open. the device was removed.\n"); > 990862a2 drivers/media/video/cx231xx/cx231xx-audio.c Mauro Carvalho Chehab > 2012-01-10 453 return -ENODEV; > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > http://lists.01.org/mailman/listinfo/kbuild Intel Corporation > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
