From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Tomasz Rusinowicz <tomasz.rusinowicz@intel.com>,
Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>,
Jeffrey Hugo <quic_jhugo@quicinc.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.6.y 2/4] accel/ivpu: Reset fw log on cold boot
Date: Wed, 16 Sep 2026 16:00:36 -0400 [thread overview]
Message-ID: <20260916200038.2459399-2-sashal@kernel.org> (raw)
In-Reply-To: <20260916200038.2459399-1-sashal@kernel.org>
From: Tomasz Rusinowicz <tomasz.rusinowicz@intel.com>
[ Upstream commit 4b4d9e394b6f45ac26ac6144b31604c76b7e3705 ]
Add ivpu_fw_log_reset() that resets the read_index of all FW logs
on cold boot so logs are properly read.
Signed-off-by: Tomasz Rusinowicz <tomasz.rusinowicz@intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930195322.461209-4-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Stable-dep-of: 95bf070f3225 ("accel/ivpu: Limit firmware log name prints to field size")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/accel/ivpu/ivpu_fw_log.c | 14 ++++++++++++++
drivers/accel/ivpu/ivpu_fw_log.h | 1 +
drivers/accel/ivpu/ivpu_pm.c | 1 +
3 files changed, 16 insertions(+)
diff --git a/drivers/accel/ivpu/ivpu_fw_log.c b/drivers/accel/ivpu/ivpu_fw_log.c
index ccad9aa99e5d6..0ed29e5ac8e52 100644
--- a/drivers/accel/ivpu/ivpu_fw_log.c
+++ b/drivers/accel/ivpu/ivpu_fw_log.c
@@ -144,3 +144,17 @@ void ivpu_fw_log_clear(struct ivpu_device *vdev)
while (fw_log_ptr(vdev, vdev->fw->mem_log_verb, &next, &log_header) == 0)
log_header->read_index = log_header->write_index;
}
+
+void ivpu_fw_log_reset(struct ivpu_device *vdev)
+{
+ struct vpu_tracing_buffer_header *log_header;
+ u32 next;
+
+ next = 0;
+ while (fw_log_ptr(vdev, vdev->fw->mem_log_crit, &next, &log_header) == 0)
+ log_header->read_index = 0;
+
+ next = 0;
+ while (fw_log_ptr(vdev, vdev->fw->mem_log_verb, &next, &log_header) == 0)
+ log_header->read_index = 0;
+}
diff --git a/drivers/accel/ivpu/ivpu_fw_log.h b/drivers/accel/ivpu/ivpu_fw_log.h
index 0b2573f6f3151..692ee0f266a31 100644
--- a/drivers/accel/ivpu/ivpu_fw_log.h
+++ b/drivers/accel/ivpu/ivpu_fw_log.h
@@ -27,6 +27,7 @@ extern unsigned int ivpu_log_level;
void ivpu_fw_log_print(struct ivpu_device *vdev, bool only_new_msgs, struct drm_printer *p);
void ivpu_fw_log_clear(struct ivpu_device *vdev);
+void ivpu_fw_log_reset(struct ivpu_device *vdev);
static inline void ivpu_fw_log_dump(struct ivpu_device *vdev)
{
diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c
index ffff2496e8e8e..e17e4e6b037ee 100644
--- a/drivers/accel/ivpu/ivpu_pm.c
+++ b/drivers/accel/ivpu/ivpu_pm.c
@@ -30,6 +30,7 @@ static void ivpu_pm_prepare_cold_boot(struct ivpu_device *vdev)
ivpu_cmdq_reset_all_contexts(vdev);
ivpu_ipc_reset(vdev);
+ ivpu_fw_log_reset(vdev);
ivpu_fw_load(vdev);
fw->entry_point = fw->cold_boot_entry_point;
}
--
2.53.0
next prev parent reply other threads:[~2026-09-16 20:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 15:13 FAILED: patch "[PATCH] accel/ivpu: Limit firmware log name prints to field size" failed to apply to 6.6-stable tree gregkh
2026-09-16 20:00 ` [PATCH 6.6.y 1/4] accel/ivpu: Fix a typo Sasha Levin
2026-09-16 20:00 ` Sasha Levin [this message]
2026-09-16 20:00 ` [PATCH 6.6.y 3/4] accel/ivpu: Refactor functions in ivpu_fw_log.c Sasha Levin
2026-09-16 20:00 ` [PATCH 6.6.y 4/4] accel/ivpu: Limit firmware log name prints to field size Sasha Levin
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