• David Brownell's avatar
    SPI driver runtime footprint shrinkage · d1e44d9c
    David Brownell authored
    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: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    d1e44d9c
spi_imx.c 45.7 KB