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authorDavid Brownell <david-b@pacbell.net>2007-10-16 01:27:46 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:09 -0700
commitd1e44d9ce8589cc4ca0596989fe17130817ebec5 (patch)
treed1b3bcfe1804ea1871d5e965a2e3f3fa2efa07fc /Documentation
parent86eeb6fe71c79bd0484e17d267034249a6943bd5 (diff)
downloadlinux-linaro-stable-d1e44d9ce8589cc4ca0596989fe17130817ebec5.tar.gz
SPI driver runtime footprint shrinkage
Shrink the runtime footprint of various SPI drivers: - Move the probe() routine into the init section where practical, using platform_driver_probe() to make that safe. This often saves around 1KB. Using platform_driver_probe() can also be a correctness fix, if the probe routine is already marked __init but the driver struct keeps a dangling pointer to it after init section removal. - Likewise move remove() routines into the exit sections. These changes would be inappropriate iff the platform devices were actually hotpluggable (e.g. they're found on optional addon cards, or in an FPGA that's dynamically reprogrammed). In these cases, that's not the situation; it's an SOC controller and the only device is initialized before these drivers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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