From: Julia Lawall <ju...@diku.dk> In each case, the print involves dereferencing a value that is NULL or is near NULL.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E,E1; identifier f; statement S1,S2,S3; @@ if ((E == NULL && ...) || ...) { ... when != if (...) S1 else S2 when != E = E1 * E->f ... when any return ...; } else S3 // </smpl> Signed-off-by: Julia Lawall <ju...@diku.dk> --- drivers/media/dvb/firewire/firedtv-1394.c | 2 +- drivers/media/video/hdpvr/hdpvr-video.c | 2 +- drivers/media/video/usbvision/usbvision-video.c | 3 +-- 3 files changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c index 6248a63..c2690df 100644 --- a/drivers/media/video/usbvision/usbvision-video.c +++ b/drivers/media/video/usbvision/usbvision-video.c @@ -1671,8 +1671,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) PDEBUG(DBG_PROBE, ""); if (usbvision == NULL) { - dev_err(&usbvision->dev->dev, - "%s: usb_get_intfdata() failed\n", __func__); + pr_err("%s: usb_get_intfdata() failed\n", __func__); return; } diff --git a/drivers/media/video/hdpvr/hdpvr-video.c b/drivers/media/video/hdpvr/hdpvr-video.c index 7cfccfd..c338f3f 100644 --- a/drivers/media/video/hdpvr/hdpvr-video.c +++ b/drivers/media/video/hdpvr/hdpvr-video.c @@ -366,7 +366,7 @@ static int hdpvr_open(struct file *file) dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file)); if (!dev) { - v4l2_err(&dev->v4l2_dev, "open failing with with ENODEV\n"); + pr_err("open failing with with ENODEV\n"); retval = -ENODEV; goto err; } diff --git a/drivers/media/dvb/firewire/firedtv-1394.c b/drivers/media/dvb/firewire/firedtv-1394.c index 26333b4..b34ca7a 100644 --- a/drivers/media/dvb/firewire/firedtv-1394.c +++ b/drivers/media/dvb/firewire/firedtv-1394.c @@ -58,7 +58,7 @@ static void rawiso_activity_cb(struct hpsb_iso *iso) num = hpsb_iso_n_ready(iso); if (!fdtv) { - dev_err(fdtv->device, "received at unknown iso channel\n"); + pr_err("received at unknown iso channel\n"); goto out; } -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
