1 files changed, 27 insertions, 4 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 299ca2821ad1..b969ab1d258b 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1698,6 +1698,29 @@ static bool _are_all_hardreset_lines_asserted(struct omap_hwmod *oh)
 }
 
 /**
+ * _are_any_hardreset_lines_asserted - return true if any part of @oh is
+ * hard-reset
+ * @oh: struct omap_hwmod *
+ *
+ * If any hardreset lines associated with @oh are asserted, then
+ * return true.  Otherwise, if no hardreset lines associated with @oh
+ * are asserted, or if @oh has no hardreset lines, then return false.
+ * This function is used to avoid executing some parts of the IP block
+ * enable/disable sequence if any hardreset line is set.
+ */
+static bool _are_any_hardreset_lines_asserted(struct omap_hwmod *oh)
+{
+        int rst_cnt = 0;
+        int i;
+
+        for (i = 0; i < oh->rst_lines_cnt && rst_cnt == 0; i++)
+                if (_read_hardreset(oh, oh->rst_lines[i].name) > 0)
+                        rst_cnt++;
+
+        return (rst_cnt) ? true : false;
+}
+
+/**
  * _omap4_disable_module - enable CLKCTRL modulemode on OMAP4
  * @oh: struct omap_hwmod *
  *
@@ -1715,7 +1738,7 @@ static int _omap4_disable_module(struct omap_hwmod *oh)
          * Since integration code might still be doing something, only
          * disable if all lines are under hardreset.
          */
-        if (!_are_all_hardreset_lines_asserted(oh))
+        if (_are_any_hardreset_lines_asserted(oh))
                 return 0;
 
         pr_debug("omap_hwmod: %s: %s\n", oh->name, __func__);
@@ -1749,12 +1772,12 @@ static int _am33xx_disable_module(struct omap_hwmod *oh)
 
         pr_debug("omap_hwmod: %s: %s\n", oh->name, __func__);
 
+        if (_are_any_hardreset_lines_asserted(oh))
+                return 0;
+
         am33xx_cm_module_disable(oh->clkdm->cm_inst, oh->clkdm->clkdm_offs,
                                  oh->prcm.omap4.clkctrl_offs);
 
-        if (_are_all_hardreset_lines_asserted(oh))
-                return 0;
-
         v = _am33xx_wait_target_disable(oh);
         if (v)
                 pr_warn("omap_hwmod: %s: _wait_target_disable failed\n",