Bluetooth: btusb: fix NXP IW610 composite device handling

The NXP IW610 module exposes itself as a composite USB device (0471:0215) with three interfaces: two real Bluetooth HCI interfaces (class 0xe0) and one vendor-specific WiFi interface (class 0xff) used by mwifiex-nxp.

The composite device's whole USB descriptor reports class 0xe0/01/01 (Bluetooth), so btusb_table's generic USB_DEVICE_INFO(0xe0, 0x01, 0x01) entry matches every interface, not just the two real HCI ones -- btusb ends up binding the WiFi interface too, and mwifiex-nxp never gets it.

Fix:
1. In btusb_table (the table the USB core actually matches against), explicitly ignore the WiFi interface via BTUSB_IGNORE, ahead of the generic entry.
2. In quirks_table, scope the existing BTUSB_MARVELL entry to the BT interface class instead of matching the whole device by VID/PID (harmless either way since quirks_table isn't consulted for initial binding, but keep it correct).

Not upstream anywhere: checked NXP's own i.MX kernel fork (nxp-imx/linux-imx), no IW610 references in btusb.c on any branch -- their reference designs wire this chip differently (WiFi over SDIO per their release notes), so they never hit this.

---
 drivers/bluetooth/btusb.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

@@ -71,6 +71,15 @@ static struct usb_driver btusb_driver;
 #define BTUSB_BROKEN_EXT_SCAN		BIT(29)
 
 static const struct usb_device_id btusb_table[] = {
+	/*
+	 * NXP IW610 (0471:0215): the composite device reports Bluetooth
+	 * class at the whole-device level, so the generic entry below
+	 * would also match this WiFi vendor interface. Ignore it here
+	 * first so mwifiex-nxp can bind it instead.
+	 */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x0471, 0x0215, 0xff, 0xff, 0xff),
+	  .driver_info = BTUSB_IGNORE },
+
 	/* Generic Bluetooth USB device */
 	{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
 

@@ -477,6 +486,14 @@ static const struct usb_device_id quirks
 	{ USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 	{ USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 
+	/*
+	 * NXP IW610 BT interfaces (Marvell-lineage silicon, same quirk as
+	 * the 0x1286 entries above). Scoped to the BT interface class,
+	 * not just VID/PID -- see the btusb_table entry above.
+	 */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x0471, 0x0215, 0xe0, 0x01, 0x01),
+	  .driver_info = BTUSB_MARVELL },
+
 	/* Intel Bluetooth devices */
 	{ USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
 	{ USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },

--
2.34.1

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list. This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/series/1160261/

---Test result---

Test Summary:

CheckPatch                    FAIL      0.73 seconds
VerifyFixes                   PASS      0.13 seconds
VerifySignedoff               PASS      0.13 seconds
GitLint                       PASS      0.32 seconds
SubjectPrefix                 PASS      0.12 seconds
BuildKernel                   PASS      30.14 seconds
CheckAllWarning               PASS      31.31 seconds
CheckSparse                   PASS      30.88 seconds
BuildKernel32                 PASS      27.34 seconds
CheckKernelLLVM               SKIP      0.00 seconds
TestRunnerSetup               PASS      511.12 seconds
IncrementalBuild              PASS      26.28 seconds

Details
##############################
Test: CheckPatch - FAIL
Desc: Run checkpatch.pl script
Output:
Bluetooth: btusb: fix NXP IW610 composite device handling
WARNING: Assisted-by expects 'AGENT_NAME:MODEL_VERSION [TOOL1] [TOOL2]' format #125:

WARNING: The commit message has 'stable@', perhaps it also needs a 'Fixes:' tag?

total: 0 errors, 2 warnings, 29 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/patch/14798256.patch has style problems, please review.

NOTE: Ignored message types: UNKNOWN_COMMIT_ID

NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

##############################
Test: CheckKernelLLVM - SKIP
Desc: Build kernel with LLVM + context analysis
Output:
Clang not found

https://github.com/bluez/bluetooth-next/pull/721

---
Regards,
Linux Bluetooth