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dm: blk: Add a easier way to create a named block device

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Add a function that automatically builds the device name given the parent
and a supplied string. Most callers will want to do this, so putting this
functionality in one place makes more sense.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2016-05-01 11:36:29 -06:00
parent 52138fd407
commit 9107c973d3
3 changed files with 37 additions and 8 deletions
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13
common/usb_storage.c
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@@ -200,7 +200,6 @@ static int usb_stor_probe_device(struct usb_device *udev)
#ifdef CONFIG_BLK
struct us_data *data;
char dev_name[30], *str;
int ret;
#else
int start;
@@ -223,14 +222,12 @@ static int usb_stor_probe_device(struct usb_device *udev)
for (lun = 0; lun <= max_lun; lun++) {
struct blk_desc *blkdev;
struct udevice *dev;
char str[10];
snprintf(dev_name, sizeof(dev_name), "%s.lun%d",
udev->dev->name, lun);
str = strdup(dev_name);
if (!str)
return -ENOMEM;
ret = blk_create_device(udev->dev, "usb_storage_blk", str,
IF_TYPE_USB, usb_max_devs, 512, 0, &dev);
snprintf(str, sizeof(str), "lun%d", lun);
ret = blk_create_devicef(udev->dev, "usb_storage_blk", str,
IF_TYPE_USB, usb_max_devs, 512, 0,
&dev);
if (ret) {
debug("Cannot bind driver\n");
return ret;