From: Hans Verkuil <hans.verk...@cisco.com>
v4l-dvb-git/drivers/media/dvb/ddbridge/ddbridge-core.c: In function
'ddb_input_read':
v4l-dvb-git/drivers/media/dvb/ddbridge/ddbridge-core.c:515:6: warning: variable
'ret' set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/dvb/ddbridge/ddbridge-core.c:514:11: warning:
variable 'off' set but not used [-Wunused-but-set-variable]
'off' was unused and 'ret' really had to be used to return -EFAULT.
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/dvb/ddbridge/ddbridge-core.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/media/dvb/ddbridge/ddbridge-core.c
b/drivers/media/dvb/ddbridge/ddbridge-core.c
index 573d540..d2e85ea 100644
--- a/drivers/media/dvb/ddbridge/ddbridge-core.c
+++ b/drivers/media/dvb/ddbridge/ddbridge-core.c
@@ -507,15 +507,14 @@ static u32 ddb_input_avail(struct ddb_input *input)
return 0;
}
-static size_t ddb_input_read(struct ddb_input *input, u8 *buf, size_t count)
+static ssize_t ddb_input_read(struct ddb_input *input, u8 *buf, size_t count)
{
struct ddb *dev = input->port->dev;
u32 left = count;
- u32 idx, off, free, stat = input->stat;
+ u32 idx, free, stat = input->stat;
int ret;
idx = (stat >> 11) & 0x1f;
- off = (stat & 0x7ff) << 7;
while (left) {
if (input->cbuf == idx)
@@ -525,6 +524,8 @@ static size_t ddb_input_read(struct ddb_input *input, u8
*buf, size_t count)
free = left;
ret = copy_to_user(buf, input->vbuf[input->cbuf] +
input->coff, free);
+ if (ret)
+ return -EFAULT;
input->coff += free;
if (input->coff == input->dma_buf_size) {
input->coff = 0;
@@ -939,6 +940,8 @@ static ssize_t ts_read(struct file *file, char *buf,
break;
}
read = ddb_input_read(input, buf, left);
+ if (read < 0)
+ return read;
left -= read;
buf += read;
}
--
1.7.5.4
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