goldfish_pipe: use GFP_ATOMIC under spin lock

The function get_free_pipe_id_locked() is called from
goldfish_pipe_open() with a lock is held, so we should
use GFP_ATOMIC instead of GFP_KERNEL.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
index 2de1e60..5f36721 100644 (file)
--- a/drivers/platform/goldfish/goldfish_pipe.c
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -704,7 +704,7 @@ static int get_free_pipe_id_locked(struct goldfish_pipe_dev *dev)
                /* Reallocate the array */
                u32 new_capacity = 2 * dev->pipes_capacity;
                struct goldfish_pipe **pipes =
-                       kcalloc(new_capacity, sizeof(*pipes), GFP_KERNEL);
+                       kcalloc(new_capacity, sizeof(*pipes), GFP_ATOMIC);
                if (!pipes)
                        return -ENOMEM;
                memcpy(pipes, dev->pipes, sizeof(*pipes) * dev->pipes_capacity);