[PATCH 2/4] gpiolib: cdev: allocate linereq using kvzalloc()

Kent Gibson
2023-12-20T01:51:43Z

The size of struct linereq may exceed a page, so allocate space for
it using kvzalloc() instead of kzalloc().

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
drivers/gpio/gpiolib-cdev.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 44d864f63130..6fec793f5513 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -1723,7 +1723,7 @@ static void linereq_free(struct linereq *lr)
kfifo_free(&lr->events);
kfree(lr->label);
gpio_device_put(lr->gdev);
- kfree(lr);
+ kvfree(lr);
}

static int linereq_release(struct inode *inode, struct file *file)
@@ -1788,7 +1788,7 @@ static int linereq_create(struct gpio_device *gdev, void __user *ip)
if (ret)
return ret;

- lr = kzalloc(struct_size(lr, lines, ulr.num_lines), GFP_KERNEL);
+ lr = kvzalloc(struct_size(lr, lines, ulr.num_lines), GFP_KERNEL);
if (!lr)
return -ENOMEM;
lr->num_lines = ulr.num_lines;
--
2.39.2