• Deepak Saxena's avatar
    [ARM] 3070/2: Add __ioremap_pfn() API · 9d4ae727
    Deepak Saxena authored
    Patch from Deepak Saxena
    
    In working on adding 36-bit addressed supersection support to ioremap(),
    I came to the conclusion that it would be far simpler to do so by just
    splitting __ioremap() into a main external interface and adding an
    __ioremap_pfn() function that takes a pfn + offset into the page that
    __ioremap() can call. This way existing callers of __ioremap() won't have
    to change their code and 36-bit systems will just call __ioremap_pfn()
    and we will not have to deal with unsigned long long variables.
    
    Note that __ioremap_pfn() should _NOT_ be called directly by drivers
    but is reserved for use by arch_ioremap() implementations that map
    32-bit resource regions into the real 36-bit address and then call
    this new function.
    Signed-off-by: default avatarDeepak Saxena <dsaxena@plexity.net>
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
    9d4ae727
io.h 11.2 KB