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staging: comedi: comedi_buf: remove unreachable dev_warn in comedi_buf_munge()

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Due to the 'while(count < num_bytes)' the computed 'block_size' will
always be a value greater than 0.

Remove the unreachable dev_warn and the (block_size < 0) test.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbobbi@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2013-01-10 10:37:27 -07:00 committed by Greg Kroah-Hartman
parent 305a6f3896
commit a8f40f463f
1 changed files with 0 additions and 7 deletions
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7
drivers/staging/comedi/comedi_buf.c
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@ -215,13 +215,6 @@ static unsigned int comedi_buf_munge(struct comedi_async *async,
int block_size = num_bytes - count; int block_size = num_bytes - count;
unsigned int buf_end; unsigned int buf_end;
if (block_size < 0) {
dev_warn(s->device->class_dev,
"%s: %s: bug! block_size is negative\n",
__FILE__, __func__);
break;
}
buf_end = async->prealloc_bufsz - async->munge_ptr; buf_end = async->prealloc_bufsz - async->munge_ptr;
if (block_size > buf_end) if (block_size > buf_end)
block_size = buf_end; block_size = buf_end;