• Christoph Hellwig's avatar
    dma-mapping: consolidate dma_set_mask · 452e06af
    Christoph Hellwig authored
    Almost everyone implements dma_set_mask the same way, although some time
    that's hidden in ->set_dma_mask methods.
    This patch consolidates those into a common implementation that either
    calls ->set_dma_mask if present or otherwise uses the default
    implementation.  Some architectures used to only call ->set_dma_mask
    after the initial checks, and those instance have been fixed to do the
    full work.  h8300 implemented dma_set_mask bogusly as a no-ops and has
    been fixed.
    Unfortunately some architectures overload unrelated semantics like changing
    the dma_ops into it so we still need to allow for an architecture override
    for now.
    [jcmvbkbc@gmail.com: fix xtensa]
    Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
    Cc: Michal Simek <monstr@monstr.eu>
    Cc: Jonas Bonn <jonas@southpole.se>
    Cc: Chris Metcalf <cmetcalf@ezchip.com>
    Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
    Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
dma-mapping.h 350 Bytes