On Wed, Aug 01, 2012 at 09:38:07AM +0200, Lothar Waßmann wrote: > Shawn Guo writes: > > On Wed, Aug 01, 2012 at 08:45:19AM +0200, Marek Vasut wrote: > > > > I must be missing something. Why do almost all spi drivers call it in > > > > the > > > > error path, even if there is no call to spi_master_get ? > > > > > > To push the refcounting to 0, to deallocate the device, I'd say ... > > > > > It's not going to work if spi_master_put is called without > > spi_master_get being called before that. > > > spi_alloc_master() calls device_initialize() which resuires a > device_put() (called from spi_master_put()) to free the device. > Ah, indeed. I missed that kref_init() will initialize the refcount to 1.
Thanks, Shawn ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general