On Tue, Oct 01, 2013 at 01:38:31PM -0500, Kim Phillips wrote: > Hi, > > Santosh and I are having a problem figuring out how to enable binding > (and re-binding) platform devices to a platform VFIO driver (see > Antonis' WIP: [1]) in an upstream-acceptable manner. > > Binding platform drivers currently depends on a string match in the > device node's compatible entry. On an arndale, one can currently > rebind the same device to the same driver like so: > > echo 12ce0000.i2c > /sys/bus/platform/drivers/s3c-i2c/12ce0000.i2c/driver/unbind > echo 12ce0000.i2c > /sys/bus/platform/drivers/s3c-i2c/bind > > And one can bind it to the vfio-dt driver, as Antonis instructs, by > appending a 'vfio-dt' string to the device tree compatible entry for > the device. Then this would work: > > echo 12ce0000.i2c > /sys/bus/platform/drivers/s3c-i2c/12ce0000.i2c/driver/unbind > echo 12ce0000.i2c > /sys/bus/platform/drivers/vfio-dt/bind > > Consequently, the hack patch below [2] allows any platform device to be > bound to the vfio-dt driver, without making changes to the device > tree. It's a hack because I don't see having any driver name specific > code in drivers/base/bus.c being upstream acceptable. You are correct. What is wrong with just doing the above unbind/bind things through sysfs, that is what it is there for, right? greg k-h -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
