Re: [PATCH v2] Bluetooth: allocate static minor for vhci
From: Marcel Holtmann <marcel@holtmann.org>
Date: 2014-02-18 17:49:48
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Hi Lucas,
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Commit bfacbb9 (Bluetooth: Use devname:vhci module alias for virtual HCI driver) added the module alias to hci_vhci module so it's possible to create the /dev/vhci node. However creating an alias without specifying the minor doesn't allow us to create the node ahead, triggerring module auto-load when it's first accessed. Starting with depmod from kmod 16 we started to warn if there's a devname alias without specifying the major and minor. Let's do the same done for uhid, kvm, fuse and others, specifying a fixed minor. In systems with systemd as the init the following will happen: on early boot systemd will call "kmod static-nodes" to read /lib/modules/$(uname -r)/modules.devname and then create the nodes. When first accessed these "dead" nodes will trigger the module loading. Signed-off-by: Lucas De Marchi <redacted> --- Changes from v1: - use minor=137, since 240 is reserved for local use We talked about using 197, but that's being used by pxa3xx-gcu, too.looks fine to me. If Kay and/or Greg want to ack it, then I take it through bluetooth-next tree.Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
patch has been applied to bluetooth-next tree. Regards Marcel