sync c-tx39.c with c-r4k.c

sync c-tx39.c with c-r4k.c

[Atsushi Nemoto]

tx39_flush_cache_range() do nothing if !cpu_has_dc_aliases.  It should
flush d-cache and invalidate i-cache since TX39(H2) has separate I/D
cache.

Here is a patch.  

diff -u linux-mips/arch/mips/mm/c-tx39.c linux/arch/mips/mm/c-tx39.c
--- linux-mips/arch/mips/mm/c-tx39.c	2005-09-05 10:16:59.000000000 +0900
+++ linux/arch/mips/mm/c-tx39.c	2005-09-28 18:51:43.000000000 +0900
@@ -167,15 +167,16 @@
 static void tx39_flush_cache_range(struct vm_area_struct *vma,
 	unsigned long start, unsigned long end)
 {
-	struct mm_struct *mm = vma->vm_mm;
+	int exec;
 
-	if (!cpu_has_dc_aliases)
+	if (!(cpu_context(smp_processor_id(), vma->vm_mm)))
 		return;
 
-	if (cpu_context(smp_processor_id(), mm) != 0) {
+	exec = vma->vm_flags & VM_EXEC;
+	if (cpu_has_dc_aliases || exec)
 		tx39_blast_dcache();
+	if (exec)
 		tx39_blast_icache();
-	}
 }
 
 static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page, unsigned long pfn)

---
Atsushi Nemoto

Re: sync c-tx39.c with c-r4k.c

[Ralf Baechle]

On Wed, Sep 28, 2005 at 08:24:58PM +0900, Atsushi Nemoto wrote:

> tx39_flush_cache_range() do nothing if !cpu_has_dc_aliases.  It should
> flush d-cache and invalidate i-cache since TX39(H2) has separate I/D
> cache.

Thanks, applied.

If you and other patch submitters would in the future please also start
sending patches with Signed-off-by: lines, for more please see
Documentation/SubmittingPatches.

In the past I didn't bother because we ended up blending all patches in
the CVS archive anyway to the point where they just didn't make sense
anymore.  Now with git that has changed.

  Ralf