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authorTakashi Iwai <tiwai@suse.de>2018-08-22 16:37:31 +0200
committerTakashi Iwai <tiwai@suse.de>2018-08-22 16:37:31 +0200
commita8e6fb22e1cb5d411456b4c612b1321ef1bc36bd (patch)
treecaf4e42aad3029cc35afe0ed72375920724057af
parentfdb66ff1a50b3046baa9bd47a2d4903400fc383c (diff)
isdn: Disable IIOCDBGVAR (bsc#1051510).
-rw-r--r--drivers/isdn/i4l/isdn_common.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index e4c43a17b333..8088c34336aa 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -1655,13 +1655,7 @@ isdn_ioctl(struct file *file, uint cmd, ulong arg)
} else
return -EINVAL;
case IIOCDBGVAR:
- if (arg) {
- if (copy_to_user(argp, &dev, sizeof(ulong)))
- return -EFAULT;
- return 0;
- } else
- return -EINVAL;
- break;
+ return -EINVAL;
default:
if ((cmd & IIOCDRVCTL) == IIOCDRVCTL)
cmd = ((cmd >> _IOC_NRSHIFT) & _IOC_NRMASK) & ISDN_DRVIOCTL_MASK;