arm: dra7xx: Hang on any failure during IOdelay recalibration

If there is any failure during IOdelay recalibration sequence, IOs are
not guaranteed to behave as expected. So hang on any failure during the
sequence.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

diff --git a/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c b/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c
index 9bd7051786e6651771961af76dcf5b794e236963..9eda57c450dda2bfbc037cb1065dcd4b9c667bc2 100644 (file)
--- a/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c
+++ b/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c
@@ -241,6 +241,12 @@ void __recalibrate_iodelay_end(int ret)
                debug("IODELAY: IO delay recalibration successfully completed\n");
        }
 
+       /* If there is an error during iodelay recalibration, SoC is in a bad
+        * state. Do not progress any further.
+        */
+       if (ret)
+               hang();
+
        return;
 }