[PATCH 1/2] Staging: comedi: comedi_fops: Change comedi_num_legacy_minors type

Cheah Kok Cheong
2017-03-04T19:23:25Z

Change to unsigned to allow removal of negative value check in
init section. Use smaller data type since the max possible
value currently is 48.

Signed-off-by: Cheah Kok Cheong <thrust73@gmail.com>
---
drivers/staging/comedi/comedi_fops.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 57e8599..354d264 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -76,8 +76,8 @@ struct comedi_file {
#define COMEDI_NUM_SUBDEVICE_MINORS \
(COMEDI_NUM_MINORS - COMEDI_NUM_BOARD_MINORS)

-static int comedi_num_legacy_minors;
-module_param(comedi_num_legacy_minors, int, 0444);
+static unsigned short comedi_num_legacy_minors;
+module_param(comedi_num_legacy_minors, ushort, 0444);
MODULE_PARM_DESC(comedi_num_legacy_minors,
"number of comedi minor devices to reserve for non-auto-configured devices (default 0)"
);
@@ -2857,8 +2857,7 @@ static int __init comedi_init(void)

pr_info("version " COMEDI_RELEASE " - http://www.comedi.org\n");

- if (comedi_num_legacy_minors < 0 ||
- comedi_num_legacy_minors > COMEDI_NUM_BOARD_MINORS) {
+ if (comedi_num_legacy_minors > COMEDI_NUM_BOARD_MINORS) {
pr_err("invalid value for module parameter \"comedi_num_legacy_minors\". Valid values are 0 through %i.\n",
COMEDI_NUM_BOARD_MINORS);
return -EINVAL;
--
2.7.4