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dm: blk: Add a function to find the next block device number

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At present this code is inline. Move it into a function to allow it to
be used elsewhere.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-04-23 20:02:06 -06:00
parent 6139281a64
commit e8abbb531f
1 changed files with 16 additions and 6 deletions
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22
drivers/block/blk-uclass.c
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@ -473,6 +473,19 @@ int blk_find_max_devnum(enum if_type if_type)
return max_devnum;
}
static int blk_next_free_devnum(enum if_type if_type)
{
int ret;
ret = blk_find_max_devnum(if_type);
if (ret == -ENODEV)
return 0;
if (ret < 0)
return ret;
return ret + 1;
}
int blk_create_device(struct udevice *parent, const char *drv_name,
const char *name, int if_type, int devnum, int blksz,
lbaint_t size, struct udevice **devp)
@ -482,13 +495,10 @@ int blk_create_device(struct udevice *parent, const char *drv_name,
int ret;
if (devnum == -1) {
ret = blk_find_max_devnum(if_type);
if (ret == -ENODEV)
devnum = 0;
else if (ret < 0)
ret = blk_next_free_devnum(if_type);
if (ret < 0)
return ret;
else
devnum = ret + 1;
devnum = ret;
}
ret = device_bind_driver(parent, drv_name, name, &dev);
if (ret)