OMAP2/3: PM: push core PM code from linux-omap

This patch is to sync the core linux-omap PM code with mainline.  This
code has evolved and been used for a while the linux-omap tree, but
the attempt here is to finally get this into mainline.

Following this will be a series of patches from the 'PM branch' of the
linux-omap tree to add full PM hardware support from the linux-omap
tree.

Much of this PM core code was written by Jouni Hogander with
significant contributions from Paul Walmsley as well as many others
from Nokia, Texas Instruments and linux-omap community.

Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c
index d62e4e10d4b0..2045441e8385 100644
--- a/arch/arm/mach-omap2/sdrc.c
+++ b/arch/arm/mach-omap2/sdrc.c
@@ -60,9 +60,12 @@ struct omap_sdrc_params *omap2_sdrc_get_params(unsigned long r)
 {
         struct omap_sdrc_params *sp;
 
+        if (!sdrc_init_params)
+                return NULL;
+
         sp = sdrc_init_params;
 
-        while (sp->rate != r)
+        while (sp->rate && sp->rate != r)
                 sp++;
 
         if (!sp->rate)