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bluetooth: hci_qca: Replace GFP_ATOMIC with GFP_KERNEL

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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 <baijiaju1990@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Jia-Ju Bai 2018-07-23 11:56:51 +08:00 • committed by Marcel Holtmann
parent f6ebfc24e7
commit 25a13e382d
1 changed files with 2 additions and 2 deletions

4
drivers/bluetooth/hci_qca.c
View file

@ -405,7 +405,7 @@ static int qca_open(struct hci_uart *hu)
BT_DBG("hu %p qca_open", 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) if (!qca)
return -ENOMEM; return -ENOMEM;
@ -891,7 +891,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate)
cmd[4] = baudrate; cmd[4] = baudrate;
skb = bt_skb_alloc(sizeof(cmd), GFP_ATOMIC); skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
if (!skb) { if (!skb) {
bt_dev_err(hdev, "Failed to allocate baudrate packet"); bt_dev_err(hdev, "Failed to allocate baudrate packet");
return -ENOMEM; return -ENOMEM;