Messages in this thread | | | Date | Tue, 20 Nov 2012 14:23:14 -0800 | Subject | Device tree node to major/minor? | From | Simon Glass <> |
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Hi,
I hope this is a stupid question with an easy answer, but I cannot find it.
I have a device tree node for an mmc block device and I want to use that block device from another driver. I have a phandle which lets me get the node of the mmc device, but I am not sure how to convert that into a block_device. In order to do so, I think I need a major/minor number. Of course the phandle might in fact point to a SCSI driver and I want that to work correctly also.
I imagine I might be able to search through the wonders of sysfs in user space, but is there a better way?
Thanks, Simon
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