lkml.org 
[lkml]   [2019]   [Dec]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 05/11] gpiolib: use gpiochip_get_desc() in lineevent_create()
Date
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Unduplicate the ngpio check by simply calling gpiochip_get_desc() and
checking its return value.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
drivers/gpio/gpiolib.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6ef55cc1188b..17796437d7be 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1009,8 +1009,9 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip)
lflags = eventreq.handleflags;
eflags = eventreq.eventflags;

- if (offset >= gdev->ngpio)
- return -EINVAL;
+ desc = gpiochip_get_desc(gdev->chip, offset);
+ if (IS_ERR(desc))
+ return PTR_ERR(desc);

/* Return an error if a unknown flag is set */
if ((lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS) ||
@@ -1048,7 +1049,6 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip)
}
}

- desc = &gdev->descs[offset];
ret = gpiod_request(desc, le->label);
if (ret)
goto out_free_label;
--
2.23.0
\
 
 \ /
  Last update: 2019-12-04 17:00    [W:0.099 / U:0.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site