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(parent: 072bd41) | patch
sparc: Add mutex for set property calls.
authorDavid S. Miller <davem@davemloft.net>
Wed, 20 Aug 2008 04:56:35 +0000 (21:56 -0700)
committerDavid S. Miller <davem@davemloft.net>
Mon, 25 Aug 2008 03:33:55 +0000 (20:33 -0700)
commit2481d76615d5e15340ccfb0243fe8779766dfc6e
tree2d047756426224d741388b4c557151f9a7cb8335tree | snapshot (tar.gz zip)
parent072bd413b88c17509c7aa7dbc398ab8bade633b3commit | diff
sparc: Add mutex for set property calls.

On some platforms, the I2C controller is shared between the OS and
OBP.  OBP uses this I2C controller to access the EEPROM, and thus is
programmed when the kernel calls prom_setprop().

Wrap such calls with the new of_set_property_mutex.

Relevant I2C bus drivers can grab this mutex around top-level I2C
operations to provide the proper protection.

Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc/include/asm/prom.h diff | blob | blame | history
arch/sparc/kernel/prom.c diff | blob | blame | history
arch/sparc64/kernel/prom.c diff | blob | blame | history