parisc: Avoid spurious inequivalent alias kernel error messages

This patch changes flush_dcache_page() to only print inequivalent alias error
messages on systems that require coherency.  Inequivalent aliases can occur on
systems that don't require coherency and this can cause spurious messages.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index a82b3ea..2407b0b 100644 (file)
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -365,7 +365,7 @@ void flush_dcache_page(struct page *page)
                if (old_addr == 0 || (old_addr & (SHM_COLOUR - 1))
                                      != (addr & (SHM_COLOUR - 1))) {
                        __flush_cache_page(mpnt, addr, page_to_phys(page));
-                       if (old_addr)
+                       if (parisc_requires_coherency() && old_addr)
                                printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %pD\n", old_addr, addr, mpnt->vm_file);
                        old_addr = addr;
                }