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media: dvb-core: Fix for dvb_ringbuffer merge conflict

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resolve the dvb_ringbuffer merge conflicts due to
v4.4-16.09-android-tmp branch merging.

CRs-Fixed: 1086706
Change-Id: Ic5ec87d48e86fd9504fed7232286cf81b46c4035
Signed-off-by: Udaya Bhaskara Reddy Mallavarapu <udaym@codeaurora.org>
This commit is contained in:
Udaya Bhaskara Reddy Mallavarapu 2017-01-05 10:49:50 +05:30
parent 8bb66a7e41
commit 15d83b644a
1 changed files with 5 additions and 3 deletions
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8
drivers/media/dvb-core/dvb_ringbuffer.c
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@ -233,9 +233,11 @@ ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
*/
smp_store_release(&rbuf->pwrite, 0);
}
status = copy_from_user(rbuf->data+rbuf->pwrite, buf, todo);
if (status)
return len - todo;
if (copy_from_user(rbuf->data + rbuf->pwrite, buf, todo)) {
smp_store_release(&rbuf->pwrite, oldpwrite);
return -EFAULT;
}
/* smp_store_release() for write pointer update, see above */
smp_store_release(&rbuf->pwrite, (rbuf->pwrite + todo) % rbuf->size);