[PATCH 2/5] Bluetooth: Use switch statement for Intel hardware variants

[AceLan Kao]

From: Tedd Ho-Jeong An <tedd.an at intel.com>

BugLink: http://bugs.launchpad.net/bugs/1705633

Multiple new hardware variants are planned and the simple if statement
would get really complicated and unreadable. So instead replace it with
a simple switch statement.

The change is applied to both USB and UART.

Based-on-patch-by: Marcel Holtmann <marcel at holtmann.org>
Signed-off-by: Tedd Ho-Jeong An <tedd.an at intel.com>
Signed-off-by: Marcel Holtmann <marcel at holtmann.org>
(cherry picked from commit 9268834b60c0b08101c7a8522b6901cf4cd57a14)
Signed-off-by: AceLan Kao <acelan.kao at canonical.com>
---
 drivers/bluetooth/btusb.c     | 10 +++++++---
 drivers/bluetooth/hci_intel.c | 17 +++++++++++------
 2 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 88eac50..e726238 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2036,13 +2036,17 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 		return -EINVAL;
 	}
 
-	/* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
-	 * and 0x0c (WsP) are supported by this firmware loading method.
+	/* Check for supported iBT hardware variants of this firmware
+	 * loading method.
 	 *
 	 * This check has been put in place to ensure correct forward
 	 * compatibility options when newer hardware variants come along.
 	 */
-	if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
+	switch (ver.hw_variant) {
+	case 0x0b:	/* SfP */
+	case 0x0c:	/* WsP */
+		break;
+	default:
 		BT_ERR("%s: Unsupported Intel hardware variant (%u)",
 		       hdev->name, ver.hw_variant);
 		return -EINVAL;
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index 863cdbc..38ca0db 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -609,12 +609,17 @@ static int intel_setup(struct hci_uart *hu)
 		return -EINVAL;
 	}
 
-	/* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
-	 * supported by this firmware loading method. This check has been
-	 * put in place to ensure correct forward compatibility options
-	 * when newer hardware variants come along.
-	 */
-	if (ver.hw_variant != 0x0b) {
+        /* Check for supported iBT hardware variants of this firmware
+         * loading method.
+         *
+         * This check has been put in place to ensure correct forward
+         * compatibility options when newer hardware variants come along.
+         */
+	switch (ver.hw_variant) {
+	case 0x0b:	/* LnP */
+	case 0x0c:	/* WsP */
+		break;
+	default:
 		bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
 			   ver.hw_variant);
 		return -EINVAL;
-- 
2.7.4