From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/drivers/bluetooth/btbcm.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 46 insertions(+), 3 deletions(-)
diff --git a/kernel/drivers/bluetooth/btbcm.c b/kernel/drivers/bluetooth/btbcm.c
index d263eac..3fe056c 100644
--- a/kernel/drivers/bluetooth/btbcm.c
+++ b/kernel/drivers/bluetooth/btbcm.c
@@ -6,6 +6,9 @@
* Copyright (C) 2015 Intel Corporation
*/
+#ifndef __GENKSYMS__ // ANDROID CRC kabi preservation hack due to commit 76dd7893bd10
+#include <linux/efi.h>
+#endif
#include <linux/module.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>
@@ -31,6 +34,43 @@
#define BCM_FW_NAME_COUNT_MAX 2
/* For kmalloc-ing the fw-name array instead of putting it on the stack */
typedef char bcm_fw_name[BCM_FW_NAME_LEN];
+
+#ifdef CONFIG_EFI
+static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
+{
+ efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f,
+ 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13);
+ bdaddr_t efi_bdaddr, bdaddr;
+ efi_status_t status;
+ unsigned long len;
+ int ret;
+
+ if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
+ return -EOPNOTSUPP;
+
+ len = sizeof(efi_bdaddr);
+ status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr);
+ if (status != EFI_SUCCESS)
+ return -ENXIO;
+
+ if (len != sizeof(efi_bdaddr))
+ return -EIO;
+
+ baswap(&bdaddr, &efi_bdaddr);
+
+ ret = btbcm_set_bdaddr(hdev, &bdaddr);
+ if (ret)
+ return ret;
+
+ bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr);
+ return 0;
+}
+#else
+static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
+{
+ return -EOPNOTSUPP;
+}
+#endif
int btbcm_check_bdaddr(struct hci_dev *hdev)
{
@@ -85,9 +125,12 @@
!bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
!bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
!bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
- bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
- &bda->bdaddr);
- set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ /* Try falling back to BDADDR EFI variable */
+ if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
+ bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
+ &bda->bdaddr);
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ }
}
kfree_skb(skb);
--
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