On Mon, 2008-02-04 at 23:53 -0800, akpm@xxxxxxxxxxxxxxxxxxxx wrote: > From: Thomas Horsten <thomas@xxxxxxxxxxx> > > The MegaRAID driver's common management module (megaraid_mm.c) creates a > char device used by the management tool "megarc" from LSI Logic (and > possibly other management tools). > > In 2.6 with udev, this device doesn't get created because it is not > registered in sysfs. > > I first fixed this by registering a class "megaraid_mm", but realized that > this should probably be moved to misc devices, instead of taking up a char > major. This is because only 1 device is used, even if there are multiple > adapters - the minor is never used (the adapter info is in the ioctl block > sent to the driver, not detected based on the minor number as one might > think). So it is a complete waste to have an entire major taken by this. > > So it now uses a misc device which I named "megadev0" (the name that megarc > expects), and has a dynamic minor (previoulsy a dynamic major was used). > > I have tested this on my own system with the megarc tool, and it works just > as fine as before (only now the device gets created correctly by udev). > > Cc: <thomas.horsten@xxxxxxxxx> > Cc: Neela Syam Kolli <Neela.Kolli@xxxxxxxxxxx> > Cc: "Ju, Seokmann" <Seokmann.Ju@xxxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Neela and Sekomann or Sumant, can I ping on this ... I've no idea what this will do to the raid management tools, so I really need someone to sign off on this. James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
