From: Simon Glass <sjg@chromium.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v4 3/6] block: Add a function to find block device descriptor
Date: Wed, 11 Jul 2018 08:02:36 -0600 [thread overview]
Message-ID: <CAPnjgZ1xpJTcdiWK8E3w8rZRk+ZYTrNKJetkCO-Ny7=9ygk9_w@mail.gmail.com> (raw)
In-Reply-To: <1530865596-10567-1-git-send-email-tien.fong.chee@intel.com>
Hi Tien,
On 6 July 2018 at 02:26, <tien.fong.chee@intel.com> wrote:
> From: Tien Fong Chee <tien.fong.chee@intel.com>
>
> Add a function to find the block device descriptor of the parent
> device.
>
> Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
> ---
> drivers/block/blk-uclass.c | 23 +++++++++++++++++++++++
> include/blk.h | 9 +++++++++
> 2 files changed, 32 insertions(+)
>
> diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
> index 9e0c823..facf527 100644
> --- a/drivers/block/blk-uclass.c
> +++ b/drivers/block/blk-uclass.c
> @@ -132,6 +132,29 @@ struct blk_desc *blk_get_devnum_by_typename(const char *if_typename, int devnum)
> }
>
> /**
> + * blk_get_by_device() - Get the block device descriptor for the given device
> + * @dev: Instance of a storage device
> + *
> + * Return: With block device descriptor on success , NULL if there is no such
> + * block device.
> + */
> +struct blk_desc *blk_get_by_device(struct udevice *dev)
> +{
> + struct udevice *child_dev, *next;
> +
> + device_foreach_child_safe(child_dev, next, dev) {
> + if (device_get_uclass_id(child_dev) != UCLASS_BLK)
> + continue;
> +
> + return dev_get_uclass_platdata(child_dev);
> + }
> +
> + debug("%s: No block device found\n", __func__);
> +
> + return NULL;
> +}
Is this different from blk_get_from_parent() ?
[..]
Regards,
Simon
next prev parent reply other threads:[~2018-07-11 14:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-06 8:26 [U-Boot] [PATCH v4 3/6] block: Add a function to find block device descriptor tien.fong.chee at intel.com
2018-07-11 14:02 ` Simon Glass [this message]
2018-07-11 14:23 ` Chee, Tien Fong
2018-07-11 20:13 ` Simon Glass
2018-07-12 5:30 ` Chee, Tien Fong
2018-09-29 15:43 ` [U-Boot] [U-Boot, v4, " Tom Rini
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