diff options
| -rw-r--r-- | 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 fe56703..ba9a643 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; } |
