• Christoph Hellwig's avatar
    dma-mapping: cosolidate dma_mapping_error · efa21e43
    Christoph Hellwig authored
    Currently there are three valid implementations of dma_mapping_error:
    
     (1) call ->mapping_error
     (2) check for a hardcoded error code
     (3) always return 0
    
    This patch provides a common implementation that calls ->mapping_error
    if present, then checks for DMA_ERROR_CODE if defined or otherwise
    returns 0.
    
    [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>
    efa21e43
dma-mapping.h 8.52 KB