linux-kernel - [PATCH 5.10/5.15 1/1] media: atomisp: add error checking to atomisp_create_pipes

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Date:   Thu,  9 Nov 2023 18:00:01 +0300
From:   Anastasia Belova <abelova@...ralinux.ru>
To:     stable@...r.kernel.org,
        "Greg Kroah-Hartman ." <gregkh@...uxfoundation.org>
Cc:     Anastasia Belova <abelova@...ralinux.ru>,
        lvc-project@...uxtesting.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Tsuchiya Yuto <kitakar@...il.com>, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH 5.10/5.15 1/1] media: atomisp: add error checking to atomisp_create_pipes_stream()

From: Hans de Goede <hdegoede@...hat.com>

commit 798d2ad739da5343122eff386578f259278f2594 upstream.

The functions called by atomisp_create_pipes_stream() can fail,
add error checking for them.

Link: https://lore.kernel.org/linux-media/20220615205037.16549-35-hdegoede@redhat.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
Signed-off-by: Anastasia Belova <abelova@...ralinux.ru>
---
 .../media/atomisp/pci/atomisp_compat.h        |  2 +-
 .../media/atomisp/pci/atomisp_compat_css20.c  | 20 ++++++++++++++++---
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 13 ++++++++++--
 3 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat.h b/drivers/staging/media/atomisp/pci/atomisp_compat.h
index c16eaf3d126f..75c978c4e6f3 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_compat.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_compat.h
@@ -242,7 +242,7 @@ int atomisp_css_input_configure_port(struct atomisp_sub_device *asd,
 				     unsigned int metadata_width,
 				     unsigned int metadata_height);
 
-void atomisp_create_pipes_stream(struct atomisp_sub_device *asd);
+int atomisp_create_pipes_stream(struct atomisp_sub_device *asd);
 void atomisp_destroy_pipes_stream_force(struct atomisp_sub_device *asd);
 
 void atomisp_css_stop(struct atomisp_sub_device *asd,
diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
index 99a632f33d2d..f64d73b4c4b7 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
@@ -795,10 +795,24 @@ static int __create_pipes(struct atomisp_sub_device *asd)
 	return -EINVAL;
 }
 
-void atomisp_create_pipes_stream(struct atomisp_sub_device *asd)
+int atomisp_create_pipes_stream(struct atomisp_sub_device *asd)
 {
-	__create_pipes(asd);
-	__create_streams(asd);
+	int ret;
+
+	ret = __create_pipes(asd);
+	if (ret) {
+		dev_err(asd->isp->dev, "create pipe failed %d.\n", ret);
+		return ret;
+	}
+
+	ret = __create_streams(asd);
+	if (ret) {
+		dev_warn(asd->isp->dev, "create stream failed %d.\n", ret);
+		__destroy_pipes(asd, true);
+		return ret;
+	}
+
+	return 0;
 }
 
 int atomisp_css_update_stream(struct atomisp_sub_device *asd)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index b7dda4b96d49..06bb1c87c814 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -2243,8 +2243,17 @@ int __atomisp_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
 		dev_err(isp->dev, "atomisp_reset");
 		atomisp_reset(isp);
 		for (i = 0; i < isp->num_of_streams; i++) {
-			if (recreate_streams[i])
-				atomisp_create_pipes_stream(&isp->asd[i]);
+			if (recreate_streams[i]) {
+				int ret2;
+
+				ret2 = atomisp_create_pipes_stream(&isp->asd[i]);
+				if (ret2) {
+					dev_err(isp->dev, "%s error re-creating streams: %d\n",
+						__func__, ret2);
+					if (!ret)
+						ret = ret2;
+				}
+			}
 		}
 		isp->isp_timeout = false;
 	}
-- 
2.30.2