[patch 1/1] arch/arm/kernel/setup.c: initialize arm_dma_zone_size earlier

Russell King - ARM Linux [off-list ref] writes:

Hi,

On Thu, Dec 08, 2011 at 10:31:09PM +0100, Arnaud Patard wrote:

quoted

arm_dma_zone_size is used by arm_bootmem_free() which is called by
paging_init(). Thus it needs to be set before calling it.

Signed-off-by: Arnaud Patard <redacted>
Acked-by: Nicolas Pitre <redacted>
CC: stable at kernel.org
Index: linux-2.6/arch/arm/kernel/setup.c
===================================================================

--- linux-2.6.orig/arch/arm/kernel/setup.c	2011-12-08 22:17:01.000000000 +0100
+++ linux-2.6/arch/arm/kernel/setup.c	2011-12-08 22:17:32.000000000 +0100

@@ -911,6 +911,12 @@ void __init setup_arch(char **cmdline_p)
 	machine_desc = mdesc;
 	machine_name = mdesc->name;
 
+#ifdef CONFIG_ZONE_DMA
+	if (mdesc->dma_zone_size) {
+		extern unsigned long arm_dma_zone_size;
+		arm_dma_zone_size = mdesc->dma_zone_size;
+	}
+#endif
 	if (mdesc->restart_mode)
 		reboot_setup(&mdesc->restart_mode);

Just trying to apply this patch, it won't apply to mainline because it's
based upon the bleeding edge of kernel development, rather than what's
currently in mainline.  If we're going to fix this in current mainline
and previous stable versions, the patch needs to be against that, not
linux-next.

Could you re-generate against an -rc kernel please?

Ok. No problem. Done. It's the patch 7204/1 in the patch system.

Arnaud