On Tue, Dec 10, 2019 at 05:02:08PM -0500, Sasha Levin wrote: > From: Marcel Holtmann <marcel@xxxxxxxxxxxx> > > [ Upstream commit 8670b2b8b029a6650d133486be9d2ace146fd29a ] > > udev has a feature of creating /dev/<node> device-nodes if it finds > a devnode:<node> modalias. This allows for auto-loading of modules that > provide the node. This requires to use a statically allocated minor > number for misc character devices. > > However, rfkill uses dynamic minor numbers and prevents auto-loading > of the module. So allocate the next static misc minor number and use > it for rfkill. > > Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx> > Link: https://lore.kernel.org/r/20191024174042.19851-1-marcel@xxxxxxxxxxxx > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> > --- > include/linux/miscdevice.h | 1 + > net/rfkill/core.c | 9 +++++++-- > 2 files changed, 8 insertions(+), 2 deletions(-) This is not needed in older kernels, please do not backport it unless the networking developers _REALLY_ think it is necessary. thanks, greg k-h
