Re: [PATCH] Bluetooth: hci_conn: clean up some casts

From: Luiz Augusto von Dentz
Date: Tue Jul 18 2023 - 15:31:16 EST


Hi Dan,

On Mon, Jul 17, 2023 at 3:20 AM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
>
> The ERR_PTR/PTR_ERR() functions are only for error pointers. They're
> not a generic way to cast pointers to int.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> We should really create INT_PTR/PTR_INT() functions. But this is a
> cleanup until someone creates those.

Is there any reason you didn't create such macros? I mean we could
have it local first, or perhaps we just do HANDLE_PTR/PTR_HANDLE to
avoid any confusion.

> net/bluetooth/hci_conn.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
> index cccc2b8b60a8..aea6fa12d954 100644
> --- a/net/bluetooth/hci_conn.c
> +++ b/net/bluetooth/hci_conn.c
> @@ -873,7 +873,7 @@ static void bis_cleanup(struct hci_conn *conn)
>
> static int remove_cig_sync(struct hci_dev *hdev, void *data)
> {
> - u8 handle = PTR_ERR(data);
> + u8 handle = (unsigned long)data;
>
> return hci_le_remove_cig_sync(hdev, handle);
> }
> @@ -882,7 +882,7 @@ static int hci_le_remove_cig(struct hci_dev *hdev, u8 handle)
> {
> bt_dev_dbg(hdev, "handle 0x%2.2x", handle);
>
> - return hci_cmd_sync_queue(hdev, remove_cig_sync, ERR_PTR(handle), NULL);
> + return hci_cmd_sync_queue(hdev, remove_cig_sync, (void *)(unsigned long)handle, NULL);
> }
>
> static void find_cis(struct hci_conn *conn, void *data)
> @@ -1234,7 +1234,7 @@ void hci_conn_failed(struct hci_conn *conn, u8 status)
> static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
> {
> struct hci_conn *conn;
> - u16 handle = PTR_ERR(data);
> + u16 handle = (unsigned long)data;
>
> conn = hci_conn_hash_lookup_handle(hdev, handle);
> if (!conn)
> @@ -1264,7 +1264,7 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
> static int hci_connect_le_sync(struct hci_dev *hdev, void *data)
> {
> struct hci_conn *conn;
> - u16 handle = PTR_ERR(data);
> + u16 handle = (unsigned long)data;
>
> conn = hci_conn_hash_lookup_handle(hdev, handle);
> if (!conn)
> @@ -2854,7 +2854,7 @@ u32 hci_conn_get_phy(struct hci_conn *conn)
> static int abort_conn_sync(struct hci_dev *hdev, void *data)
> {
> struct hci_conn *conn;
> - u16 handle = PTR_ERR(data);
> + u16 handle = (unsigned long)data;
>
> conn = hci_conn_hash_lookup_handle(hdev, handle);
> if (!conn)
> --
> 2.39.2
>


--
Luiz Augusto von Dentz