[PATCH] clkdev: add support to lookup for early platform device
lethal at linux-sh.org
Wed Apr 27 22:09:10 EDT 2011
On Wed, Apr 27, 2011 at 05:00:57PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 12:47 Wed 27 Apr , Jean-Christophe PLAGNIOL-VILLARD wrote:
> > On 12:31 Wed 27 Apr , Jean-Christophe PLAGNIOL-VILLARD wrote:
> > > On 09:42 Wed 27 Apr , Russell King - ARM Linux wrote:
> > > > On Wed, Apr 20, 2011 at 04:05:14PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > > > > early platform device may do not have a device name as the slab is not yet
> > > > > available. So to search a clock base on the dev_id we need to search first the
> > > > > device base name and then the id
> > > >
> > > > I really don't like this. IDs are platform device specific, and this is
> > > > a platform devince independent layer.
> > > >
> > > > If you want to do this, then add a platform_device_clk_get() call, which
> > > > takes the platform device and connection id. Uses the platform device
> > > > infrastructure to format the device name, and use clk_get_sys() to look
> > > > up the device/connection id from that.
> > > I do not want to alloc a string in the clkdev
> > > but if you prefer
> > I check we can not do so
> > if slab is not available we can not use kmalloc
> > so we can not generate the dev.init_name
> I check also we can not use the bootmem as it's too early in the init
> so allocate the dev_id is not possible
> use a satic buffer I'm not so happy about it
> the only other solution is this one
Are you willfully ignoring the init_name handling in
early_platform_driver_probe_id() or something?
See a636ee7fb35b731ba2b331f6294e809bb6be09c8 for example.
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