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author | James Morris <jmorris@namei.org> | 2011-06-30 18:43:56 +1000 |
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committer | James Morris <jmorris@namei.org> | 2011-06-30 18:43:56 +1000 |
commit | 5b944a71a192977c1c018bbcfa0c52dca48e2368 (patch) | |
tree | 9f234c4a93bb28890ad086c846d2bf0b35f7f7ae /drivers/ptp/ptp_chardev.c | |
parent | 0e4ae0e0dec634b2ae53ac57d14141b140467dbe (diff) | |
parent | c017d0d1351f916c0ced3f358afc491fdcf490b4 (diff) | |
download | op-kernel-dev-5b944a71a192977c1c018bbcfa0c52dca48e2368.zip op-kernel-dev-5b944a71a192977c1c018bbcfa0c52dca48e2368.tar.gz |
Merge branch 'linus' into next
Diffstat (limited to 'drivers/ptp/ptp_chardev.c')
-rw-r--r-- | drivers/ptp/ptp_chardev.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index a8d03ae..e7f301da2 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -46,7 +46,8 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg) caps.n_ext_ts = ptp->info->n_ext_ts; caps.n_per_out = ptp->info->n_per_out; caps.pps = ptp->info->pps; - err = copy_to_user((void __user *)arg, &caps, sizeof(caps)); + if (copy_to_user((void __user *)arg, &caps, sizeof(caps))) + err = -EFAULT; break; case PTP_EXTTS_REQUEST: @@ -129,8 +130,10 @@ ssize_t ptp_read(struct posix_clock *pc, return -ERESTARTSYS; } - if (ptp->defunct) + if (ptp->defunct) { + mutex_unlock(&ptp->tsevq_mux); return -ENODEV; + } spin_lock_irqsave(&queue->lock, flags); @@ -150,10 +153,8 @@ ssize_t ptp_read(struct posix_clock *pc, mutex_unlock(&ptp->tsevq_mux); - if (copy_to_user(buf, event, cnt)) { - mutex_unlock(&ptp->tsevq_mux); + if (copy_to_user(buf, event, cnt)) return -EFAULT; - } return cnt; } |