diff mbox series

[v2,1/4] Bluetooth: hci_sync: Check LMP feature bit instead of quirk

Message ID 1658383473-32188-2-git-send-email-quic_zijuhu@quicinc.com (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series Bluetooth: Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING | expand

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netdev/tree_selection success Guessed tree name to be net-next
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netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 40 this patch: 40
netdev/cc_maintainers success CCed 9 of 9 maintainers
netdev/build_clang success Errors and warnings before: 2 this patch: 2
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 40 this patch: 40
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 23 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

quic_zijuhu July 21, 2022, 6:04 a.m. UTC
BT core driver should addtionally check LMP feature bit
"Erroneous Data Reporting" instead of quirk
HCI_QUIRK_BROKEN_ERR_DATA_REPORTING set by BT device driver to decide if
HCI commands HCI_Read|Write_Default_Erroneous_Data_Reporting are broken.

BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 2, Part C | page 587
This feature indicates whether the device is able to support the
Packet_Status_Flag and the HCI commands HCI_Write_Default_-
Erroneous_Data_Reporting and HCI_Read_Default_Erroneous_-
Data_Reporting.

the quirk was introduced by 'commit cde1a8a99287 ("Bluetooth: btusb: Fix
and detect most of the Chinese Bluetooth controllers")' to mark HCI
commands HCI_Read|Write_Default_Erroneous_Data_Reporting broken by BT
device driver, but the reason why these two HCI commands are broken is
that feature "Erroneous Data Reporting" is not enabled by firmware, this
scenario is illustrated by below log of QCA controllers with USB I/F:

@ RAW Open: hcitool (privileged) version 2.22
< HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0
> HCI Event: Command Complete (0x0e) plen 68
      Read Local Supported Commands (0x04|0x0002) ncmd 1
        Status: Success (0x00)
        Commands: 288 entries
......
          Read Default Erroneous Data Reporting (Octet 18 - Bit 2)
          Write Default Erroneous Data Reporting (Octet 18 - Bit 3)
......

< HCI Command: Read Default Erroneous Data Reporting (0x03|0x005a) plen 0
> HCI Event: Command Complete (0x0e) plen 4
      Read Default Erroneous Data Reporting (0x03|0x005a) ncmd 1
        Status: Unknown HCI Command (0x01)

< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0
> HCI Event: Command Complete (0x0e) plen 12
      Read Local Supported Features (0x04|0x0003) ncmd 1
        Status: Success (0x00)
        Features: 0xff 0xfe 0x0f 0xfe 0xd8 0x3f 0x5b 0x87
          3 slot packets
......

Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Tested-by: Zijun Hu <quic_zijuhu@quicinc.com>
---
 include/net/bluetooth/hci.h | 1 +
 net/bluetooth/hci_sync.c    | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 4a45c48eb0d2..5cf0fbfb89b4 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -497,6 +497,7 @@  enum {
 #define LMP_EXT_INQ	0x01
 #define LMP_SIMUL_LE_BR	0x02
 #define LMP_SIMPLE_PAIR	0x08
+#define LMP_ERR_DATA_REPORTING 0x20
 #define LMP_NO_FLUSH	0x40
 
 #define LMP_LSTO	0x01
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index a4f1b209b4f8..3881c3230643 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3221,7 +3221,7 @@  static int hci_read_page_scan_activity_sync(struct hci_dev *hdev)
 static int hci_read_def_err_data_reporting_sync(struct hci_dev *hdev)
 {
 	if (!(hdev->commands[18] & 0x04) ||
-	    test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks))
+	    !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING))
 		return 0;
 
 	return __hci_cmd_sync_status(hdev, HCI_OP_READ_DEF_ERR_DATA_REPORTING,
@@ -3706,7 +3706,7 @@  static int hci_set_err_data_report_sync(struct hci_dev *hdev)
 	bool enabled = hci_dev_test_flag(hdev, HCI_WIDEBAND_SPEECH_ENABLED);
 
 	if (!(hdev->commands[18] & 0x08) ||
-	    test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks))
+	    !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING))
 		return 0;
 
 	if (enabled == hdev->err_data_reporting)