linux-kernel - [PATCH v4 0/4] Fix SSR(SubSystem Restart) issues caused by BT

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Message-Id: <20250814124704.2531811-1-quic_shuaz@quicinc.com>
Date: Thu, 14 Aug 2025 20:47:00 +0800
From: Shuai Zhang <quic_shuaz@...cinc.com>
To: linux-bluetooth@...r.kernel.org, linux-arm-msm@...r.kernel.org
Cc: quic_bt@...cinc.com, Shuai Zhang <quic_shuaz@...cinc.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/4] Fix SSR(SubSystem Restart) issues caused by BT_EN being pulled up by hardware

This patch series addresses issues encountered during SSR when
the BT_EN pin is pulled up by hardware. The main issues fixed are:

1. Timeout when sending reset command.
2. IBS state of host and controller not being synchronized.
3. Multiple triggers of SSR generating only one coredump file.
4. SSR process failed due to tx_idle_timer timeout

Signed-off-by: Shuai Zhang <quic_shuaz@...cinc.com>
---
To: Marcel Holtmann <marcel@...tmann.org>
To: Luiz Augusto von Dentz <luiz.dentz@...il.com>
Cc: linux-bluetooth@...r.kernel.org
Cc: linux-arm-msm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: quic_bt@...cinc.com

---
Changes in v4:
- Update commit messages.
- Link to v3: https://lore.kernel.org/all/20250813033505.3868781-1-quic_shuaz@quicinc.com/
---

Shuai Zhang (4):
  driver: bluetooth: hci_qca: fix ssr fail when BT_EN is pulled up by hw
  driver: bluetooth: hci_qca: fix host IBS state after SSR
  driver: bluetooth: hci_qca: Multiple triggers of SSR only generate one
    coredump file
  driver: bluetooth: hci_qca: SSR(SubSystem Restart)process failed due
    to tx_idle_timer timeout

 drivers/bluetooth/hci_qca.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

-- 
2.34.1