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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 2/2] efi-block: detect when the block device is a USB Disk
Date: Fri, 27 Oct 2017 09:05:48 +0200	[thread overview]
Message-ID: <1509087948-15969-2-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1509087948-15969-1-git-send-email-plagnioj@jcrosoft.com>

use usbdisk as a basename

This will be usefull as example when we want to search for a usb disk for
failsafe update or install.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 drivers/block/efi-block-io.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/block/efi-block-io.c b/drivers/block/efi-block-io.c
index a4d9d3a95..2bbeb99e6 100644
--- a/drivers/block/efi-block-io.c
+++ b/drivers/block/efi-block-io.c
@@ -130,6 +130,18 @@ static void efi_bio_print_info(struct efi_bio_priv *priv)
 			media->optimal_transfer_length_granularity);
 }
 
+static int is_bio_usbdev(struct efi_device *efidev)
+{
+	int i;
+
+	for (i = 0; i < efidev->num_guids; i++) {
+		if (!efi_guidcmp(efidev->guids[i], EFI_USB_IO_PROTOCOL_GUID))
+			return 1;
+	}
+
+	return 0;
+}
+
 int efi_bio_probe(struct efi_device *efidev)
 {
 	int ret;
@@ -147,7 +159,10 @@ int efi_bio_probe(struct efi_device *efidev)
 	efi_bio_print_info(priv);
 	priv->dev = &efidev->dev;
 
-	priv->blk.cdev.name = xasprintf("disk%d", cdev_find_free_index("disk"));
+	if (is_bio_usbdev(efidev))
+		priv->blk.cdev.name = xasprintf("usbdisk%d", cdev_find_free_index("usbdisk"));
+	else
+		priv->blk.cdev.name = xasprintf("disk%d", cdev_find_free_index("disk"));
 	priv->blk.blockbits = ffs(media->block_size) - 1;
 	priv->blk.num_blocks = media->last_block + 1;
 	priv->blk.ops = &efi_bio_ops;
-- 
2.11.0


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  reply	other threads:[~2017-10-27  7:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-27  7:05 [PATCH 1/2] efi-gui: add USB IO Protocol GUID definition Jean-Christophe PLAGNIOL-VILLARD
2017-10-27  7:05 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2017-11-02 11:03   ` [PATCH 2/2] efi-block: detect when the block device is a USB Disk Michael Olbrich
2017-11-03 11:27     ` Sascha Hauer
2017-10-27  8:58 ` [PATCH 1/2] efi-gui: add USB IO Protocol GUID definition Sascha Hauer

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