lkml.org 
[lkml]   [2004]   [Oct]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Should osst call cdev_alloc()
    On 10/23/2004 04:56:06 PM, Kai Makisara wrote:
    > On Sat, 23 Oct 2004, Willem Riede wrote:
    >
    > > Currently, sg.c and st.c contain calls to cdev_alloc() and friends:
    > >
    > > My question is: should osst do the same? It seems to work just fine
    > without.
    > >
    > The reason why st.c calls cdev_alloc() directly is that this allows it to
    > use the large minor numbers (some people want to use more than 32 tapes).
    > This also used to give presence in sysfs but that is not the case any
    > more. The devices can be shown in sysfs using device classes (st.c uses
    > the class_simple_* functions).
    >
    > Osst does call cdev_alloc() indirectly through register_chrdev(). This is
    > the link between the "old style" character device allocation and the
    > current method. As long as register_chrdev() exists, you don't have any
    > pressing need to change osst unless you want to support more than 256
    > minors.

    Thanks. Given that the Onstream devices were targeted at the low end market, I
    see no need to support many drives of this type, so I'll leave it as it is.

    Willem Riede.


    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 14:07    [W:0.020 / U:60.476 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site