From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-media@vger.kernel.org
Cc: "Yan, Dongcheng" <dongcheng.yan@intel.com>,
Mehdi Djait <mehdi.djait@linux.intel.com>,
"Yu, Ong Hock" <ong.hock.yu@intel.com>,
"Ng, Khai Wen" <khai.wen.ng@intel.com>,
Antti Laakso <antti.laakso@linux.intel.com>,
"Bajpai, Manik" <manik.bajpai@intel.com>,
Divyamani Tripathi <divyamani.tripathi@intel.com>,
"Sapre, Sarang" <sarang.sapre@intel.com>,
"Yao, Hao" <hao.yao@intel.com>
Subject: [PATCH v2 3/5] media: ipu6: Prevent starting streaming if ISYS needs reset
Date: Mon, 12 Oct 2026 14:40:00 +0300 [thread overview]
Message-ID: <20261012114002.3970409-4-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20261012114002.3970409-1-sakari.ailus@linux.intel.com>
Fail starting streaming whenever ISYS needs to be reset to resume normal
operation.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/media/pci/intel/ipu6/ipu6-isys-queue.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c b/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
index 6596833e95d4..d637b428b0f5 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
@@ -481,6 +481,13 @@ static int start_streaming(struct vb2_queue *q, unsigned int count)
av->vdev.name, ipu6_isys_get_frame_width(av),
ipu6_isys_get_frame_height(av), pfmt->css_pixelformat);
+ scoped_guard(mutex, &av->isys->mutex) {
+ if (av->isys->need_reset) {
+ ret = -EBUSY;
+ goto out_return_buffers;
+ }
+ }
+
remote_pad = media_pad_remote_pad_unique(&av->pad);
if (IS_ERR(remote_pad)) {
dev_dbg(dev, "failed to get remote pad\n");
--
2.47.3
next prev parent reply other threads:[~2026-10-12 11:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 11:39 [PATCH v2 0/5] IPU reset workaround changes Sakari Ailus
2026-10-12 11:39 ` [PATCH v2 1/5] media: ipu6: Don't mark need_reset based on returned buffers Sakari Ailus
2026-10-12 11:39 ` [PATCH v2 2/5] media: ipu6: Tell about not being able to obtain frame descriptor Sakari Ailus
2026-10-12 11:40 ` Sakari Ailus [this message]
2026-10-12 11:40 ` [PATCH v2 4/5] media: ipu6: Remove need_reset check from video device open Sakari Ailus
2026-10-12 11:40 ` [PATCH v2 5/5] media: ipu6: Return errors from stream stop and close Sakari Ailus
2026-10-12 12:20 ` Antti Laakso
2026-10-14 13:05 ` [PATCH v2 0/5] IPU reset workaround changes Antti Laakso
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