kdump: use is_kdump_kernel() in sba_init()

o Make use of is_kdump_kernel() rather than checking elfcorehdr_addr directly.

o Remove CONFIG_CRASH_DUMP as is_kdump_kernel() is safe to call anywhere

o Remove CONFIG_PROC_FS as it is bogus, the check
  should occur regardless of if CONFIG_PROC_FS is set or not.

Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 4956be4..d98f0f4 100644 (file)
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -2070,14 +2070,13 @@ sba_init(void)
        if (!ia64_platform_is("hpzx1") && !ia64_platform_is("hpzx1_swiotlb"))
                return 0;
 
-#if defined(CONFIG_IA64_GENERIC) && defined(CONFIG_CRASH_DUMP) && \
-        defined(CONFIG_PROC_FS)
+#if defined(CONFIG_IA64_GENERIC)
        /* If we are booting a kdump kernel, the sba_iommu will
         * cause devices that were not shutdown properly to MCA
         * as soon as they are turned back on.  Our only option for
         * a successful kdump kernel boot is to use the swiotlb.
         */
-       if (elfcorehdr_addr < ELFCORE_ADDR_MAX) {
+       if (is_kdump_kernel()) {
                if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
                        panic("Unable to initialize software I/O TLB:"
                                  " Try machvec=dig boot option");