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From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-media@vger.kernel.org
Cc: laurent.pinchart@ideasonboard.com,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	Jacopo Mondi <jacopo.mondi@ideasonboard.com>,
	Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>,
	Jai Luthra <jai.luthra@ideasonboard.com>,
	Mehdi Djait <mehdi.djait@linux.intel.com>,
	Mattijs Korpershoek <mkorpershoek@kernel.org>
Subject: [PATCH v3 06/29] media: v4l2-subdev: Change the maximum number of routes
Date: Mon, 24 Aug 2026 15:14:28 +0300	[thread overview]
Message-ID: <20260824121451.3348583-7-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20260824121451.3348583-1-sakari.ailus@linux.intel.com>

As the frame descriptors are now allocated dynamically, allow as many
routes that there can be dynamically allocated frame descriptors.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index e15d3f63e004..071657459202 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1088,14 +1088,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 				num_active_routes++;
 		}
 
-		/*
-		 * Drivers that implement routing need to report a frame
-		 * descriptor accordingly, with up to one entry per route. Until
-		 * the frame descriptors entries get allocated dynamically,
-		 * limit the number of active routes to
-		 * V4L2_FRAME_DESC_ENTRY_PREALLOC.
-		 */
-		if (num_active_routes > V4L2_FRAME_DESC_ENTRY_PREALLOC)
+		if (num_active_routes > V4L2_FRAME_DESC_ENTRY_MAX)
 			return -E2BIG;
 
 		/*
-- 
2.47.3


  parent reply	other threads:[~2026-08-24 12:14 UTC|newest]

Thread overview: 110+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-24 12:14 [PATCH v3 00/29] Rework frame descriptors Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 01/29] media: v4l2-common: Add helper function media_bus_fmt_to_csi2_(bpp|dt)() Sakari Ailus
2026-08-26 13:18   ` Linus Walleij
2026-08-27  7:45     ` Linus Walleij
2026-08-27  8:50     ` Sakari Ailus
2026-08-27  9:34       ` Sakari Ailus
2026-08-27 22:29   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 02/29] media: v4l2-subdev: Align frame descriptor error codes with routing Sakari Ailus
2026-08-27  7:46   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 03/29] media: v4l2-subdev: Prepare for changes in getting frame descriptors Sakari Ailus
2026-08-31 12:43   ` Linus Walleij
2026-09-02 11:55     ` Sakari Ailus
2026-08-31 12:44   ` Linus Walleij
2026-09-02 12:00     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 04/29] media: v4l2-subdev: Allow releasing frame descriptors on return Sakari Ailus
2026-08-24 20:34   ` Frank Li
2026-08-31 12:54   ` Linus Walleij
2026-09-02 11:23     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 05/29] media: v4l2-subdev: Allow allocating frame descriptors based on the need Sakari Ailus
2026-08-31 13:18   ` Linus Walleij
2026-09-01 12:30     ` Linus Walleij
2026-08-24 12:14 ` Sakari Ailus [this message]
2026-09-01 12:31   ` [PATCH v3 06/29] media: v4l2-subdev: Change the maximum number of routes Linus Walleij
2026-08-24 12:14 ` [PATCH v3 07/29] media: v4l2-subdev: Add frame descriptor passthrough for CSI-2 and DVP Sakari Ailus
2026-08-24 20:43   ` Frank Li
2026-09-01 13:01   ` Linus Walleij
2026-09-02 12:02     ` Sakari Ailus
2026-09-02 13:04       ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 08/29] media: ds90ub913: Use v4l2_subdev_get_frame_desc_passthrough_csi2() Sakari Ailus
2026-08-24 20:44   ` Frank Li
2026-09-01 13:12   ` Linus Walleij
2026-09-02 12:05     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 09/29] media: ds90ub953: " Sakari Ailus
2026-08-24 20:44   ` Frank Li
2026-09-01 13:17   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 10/29] media: nxp: imx8-isi: " Sakari Ailus
2026-08-24 20:44   ` Frank Li
2026-09-01 13:30   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 11/29] media: rzg2l-cru: " Sakari Ailus
2026-08-24 20:45   ` Frank Li
2026-09-01 21:18   ` Linus Walleij
2026-09-02 12:22     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 12/29] media: dw-mipi-csi2rx: " Sakari Ailus
2026-08-24 20:46   ` Frank Li
2026-09-01 21:22   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 13/29] media: cdn-csi2rc: media: " Sakari Ailus
2026-08-24 20:47   ` Frank Li
2026-08-26  6:41   ` Jai Luthra
2026-09-01 21:43   ` Linus Walleij
2026-09-09  8:39     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 14/29] media: v4l2-subdev: Make v4l2_subdev_get_frame_desc_passthrough() static Sakari Ailus
2026-08-24 20:48   ` Frank Li
2026-09-01 22:16   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 15/29] media: v4l2-subdev: Return dynamically allocated pass-through routes Sakari Ailus
2026-08-24 21:00   ` Frank Li
2026-08-25  7:36     ` Sakari Ailus
2026-09-02  5:44   ` Linus Walleij
2026-09-02  9:34     ` Linus Walleij
2026-09-09  9:12       ` Sakari Ailus
2026-09-09  9:10     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 16/29] media: v4l2-subdev: Always return at least one frame descriptor Sakari Ailus
2026-09-04 10:27   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 17/29] media: bcm2835-unicam: Use v4l2_subdev_get_frame_desc() Sakari Ailus
2026-08-24 21:07   ` Frank Li
2026-08-25  7:40     ` Sakari Ailus
2026-09-04 10:32   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 18/29] media: bcm2835-unicam: Remove frame descriptor workaround Sakari Ailus
2026-08-24 21:10   ` Frank Li
2026-08-26 12:09     ` Sakari Ailus
2026-09-04 10:43   ` Linus Walleij
2026-09-09  9:26     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 19/29] media: nxp: imx8-isi: Use v4l2_subdev_get_frame_desc() Sakari Ailus
2026-09-04 12:44   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 20/29] media: raspberrypi: cfe: " Sakari Ailus
2026-08-24 21:11   ` Frank Li
2026-09-04 12:51   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 21/29] media: rzg2l-cru: " Sakari Ailus
2026-08-24 21:13   ` Frank Li
2026-09-04 12:57   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 22/29] media: rkisp1: " Sakari Ailus
2026-08-24 21:13   ` Frank Li
2026-09-04 13:12   ` Linus Walleij
2026-09-09 10:06     ` Sakari Ailus
2026-08-24 12:14 ` [PATCH v3 23/29] media: exynos4-is: " Sakari Ailus
2026-08-24 21:22   ` Frank Li
2026-09-04 13:35   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 24/29] media: ti: cal: " Sakari Ailus
2026-08-24 21:26   ` Frank Li
2026-08-25  8:05     ` Sakari Ailus
2026-09-04 13:38   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 25/29] media: ipu6: " Sakari Ailus
2026-08-24 21:26   ` Frank Li
2026-09-04 20:21   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 26/29] staging: media: ipu7: " Sakari Ailus
2026-08-24 21:27   ` Frank Li
2026-09-04 20:25   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 27/29] media: cdns-csi2rc: " Sakari Ailus
2026-08-24 21:29   ` Frank Li
2026-08-26  6:39   ` Jai Luthra
2026-09-04 20:27   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 28/29] media: v4l2-subdev: Use v4l2_subdev_get_frame_desc() for passthrough Sakari Ailus
2026-08-24 21:37   ` Frank Li
2026-08-25  7:34     ` Sakari Ailus
2026-09-04 20:38   ` Linus Walleij
2026-09-04 20:45   ` Linus Walleij
2026-08-24 12:14 ` [PATCH v3 29/29] media: j721e-csi2rx: Use v4l2_subdev_get_frame_desc() Sakari Ailus
2026-08-24 21:38   ` Frank Li
2026-08-26  6:36   ` Jai Luthra
2026-09-04 20:54   ` Linus Walleij
2026-08-26  9:58 ` [PATCH v3 00/29] Rework frame descriptors Mattijs Korpershoek

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