From 25a13e382de2b0f844cd6303e45f2b33c8fbabac Mon Sep 17 00:00:00 2001 From: Jia-Ju Bai Date: Mon, 23 Jul 2018 11:56:51 +0800 Subject: [PATCH] bluetooth: hci_qca: Replace GFP_ATOMIC with GFP_KERNEL qca_open() and qca_set_baudrate() are never called in atomic context. They call kzalloc() and bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by: Jia-Ju Bai Signed-off-by: Marcel Holtmann --- drivers/bluetooth/hci_qca.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 51790dd02afb..8431be3a837f 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -405,7 +405,7 @@ static int qca_open(struct hci_uart *hu) BT_DBG("hu %p qca_open", hu); - qca = kzalloc(sizeof(struct qca_data), GFP_ATOMIC); + qca = kzalloc(sizeof(struct qca_data), GFP_KERNEL); if (!qca) return -ENOMEM; @@ -891,7 +891,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate) cmd[4] = baudrate; - skb = bt_skb_alloc(sizeof(cmd), GFP_ATOMIC); + skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); if (!skb) { bt_dev_err(hdev, "Failed to allocate baudrate packet"); return -ENOMEM; -- 2.11.0