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staging: comedi: make some variables unsigned in comedi_write()

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In `comedi_write()`, the `n` and `m` variables are of type `int`.
Change them to `unsigned int` as they are used to measure a positive
number of bytes.  The `count` variable is also of type `int` and holds
the returned number of bytes written.  Change it to type `ssize_t` to
match the function's return type.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2015-11-18 17:55:06 +00:00 committed by Greg Kroah-Hartman
parent ed65bba31b
commit 84a185ec42
1 changed files with 3 additions and 1 deletions
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drivers/staging/comedi/comedi_fops.c
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@ -2303,7 +2303,9 @@ static ssize_t comedi_write(struct file *file, const char __user *buf,
{
struct comedi_subdevice *s;
struct comedi_async *async;
int n, m, count = 0, retval = 0;
unsigned int n, m;
ssize_t count = 0;
int retval = 0;
DECLARE_WAITQUEUE(wait, current);
struct comedi_file *cfp = file->private_data;
struct comedi_device *dev = cfp->dev;