• Toshi Kani's avatar
    resource: Handle resource flags properly · a3650d53
    Toshi Kani authored
    I/O resource flags consist of I/O resource types and modifier
    bits. Therefore, checking an I/O resource type in 'flags' must
    be performed with a bitwise operation.
    
    Fix find_next_iomem_res() and region_intersects() that simply
    compare 'flags' against a given value.
    
    Also change __request_region() to set 'res->flags' from
    resource_type() and resource_ext_type() of the parent, so that
    children nodes will inherit the extended I/O resource type.
    Signed-off-by: default avatarToshi Kani <toshi.kani@hpe.com>
    Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Brian Gerst <brgerst@gmail.com>
    Cc: Dan Williams <dan.j.williams@intel.com>
    Cc: Denys Vlasenko <dvlasenk@redhat.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Jakub Sitnicki <jsitnicki@gmail.com>
    Cc: Jiang Liu <jiang.liu@linux.intel.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Luis R. Rodriguez <mcgrof@suse.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Toshi Kani <toshi.kani@hp.com>
    Cc: Vinod Koul <vinod.koul@intel.com>
    Cc: linux-arch@vger.kernel.org
    Cc: linux-mm <linux-mm@kvack.org>
    Link: http://lkml.kernel.org/r/1453841853-11383-3-git-send-email-bp@alien8.deSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    a3650d53
resource.c 37.2 KB