diff mbox series

[RFC,08/22] dm: blk: add a device-probe hook for scanning disk partitions

Message ID 20211001050228.55183-17-takahiro.akashi@linaro.org
State Superseded
Headers show
Series None | expand

Commit Message

AKASHI Takahiro Oct. 1, 2021, 5:02 a.m. UTC
Now that all the block device drivers have enable a probe hook, we will
call blk_create_partitions() to enumerate all the partitions and create
associated udevices when a block device is detected.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

---
 drivers/block/blk-uclass.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

-- 
2.33.0

Comments

Simon Glass Oct. 10, 2021, 2:14 p.m. UTC | #1
On Thu, 30 Sept 2021 at 23:03, AKASHI Takahiro
<takahiro.akashi@linaro.org> wrote:
>

> Now that all the block device drivers have enable a probe hook, we will

> call blk_create_partitions() to enumerate all the partitions and create

> associated udevices when a block device is detected.

>

> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

> ---

>  drivers/block/blk-uclass.c | 15 +++++++++++++++

>  1 file changed, 15 insertions(+)

>


Reviewed-by: Simon Glass <sjg@chromium.org>


But I don't see blk_create_partitions() in this patch.

> diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c

> index dd7f3c0fe31e..6ba11a8fa7f7 100644

> --- a/drivers/block/blk-uclass.c

> +++ b/drivers/block/blk-uclass.c

> @@ -741,11 +741,25 @@ static int blk_post_probe(struct udevice *dev)

>                 struct blk_desc *desc = dev_get_uclass_plat(dev);

>

>                 part_init(desc);

> +

> +               if (desc->part_type != PART_TYPE_UNKNOWN &&

> +                   blk_create_partitions(dev))

> +                       debug("*** creating partitions failed\n");

>         }

>

>         return 0;

>  }

>

> +static int blk_part_post_probe(struct udevice *dev)

> +{

> +       /*

> +        * TODO:

> +        * If we call blk_creat_partitions() here, it would allow for

> +        * "partitions in a partition".

> +        */


Would that be useful?


> +       return 0;

> +}

> +

>  UCLASS_DRIVER(blk) = {

>         .id             = UCLASS_BLK,

>         .name           = "blk",

> @@ -821,6 +835,7 @@ U_BOOT_DRIVER(blk_partition) = {

>

>  UCLASS_DRIVER(partition) = {

>         .id             = UCLASS_PARTITION,

> +       .post_probe     = blk_part_post_probe,

>         .per_device_plat_auto   = sizeof(struct disk_part),

>         .name           = "partition",

>  };

> --

> 2.33.0

>
diff mbox series

Patch

diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index dd7f3c0fe31e..6ba11a8fa7f7 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -741,11 +741,25 @@  static int blk_post_probe(struct udevice *dev)
 		struct blk_desc *desc = dev_get_uclass_plat(dev);
 
 		part_init(desc);
+
+		if (desc->part_type != PART_TYPE_UNKNOWN &&
+		    blk_create_partitions(dev))
+			debug("*** creating partitions failed\n");
 	}
 
 	return 0;
 }
 
+static int blk_part_post_probe(struct udevice *dev)
+{
+	/*
+	 * TODO:
+	 * If we call blk_creat_partitions() here, it would allow for
+	 * "partitions in a partition".
+	 */
+	return 0;
+}
+
 UCLASS_DRIVER(blk) = {
 	.id		= UCLASS_BLK,
 	.name		= "blk",
@@ -821,6 +835,7 @@  U_BOOT_DRIVER(blk_partition) = {
 
 UCLASS_DRIVER(partition) = {
 	.id		= UCLASS_PARTITION,
+	.post_probe	= blk_part_post_probe,
 	.per_device_plat_auto	= sizeof(struct disk_part),
 	.name		= "partition",
 };