ARM: OMAP2+: hwmod code: convert missing clockdomain warnings to debug messages

The decision was made a few months ago to allow struct omap_hwmod
records and struct clk records to omit clockdomain information if the
clockdomain is not software-controllable.  See for example commit
868c157df9721675c19729eed2c96bac6c3f1d01 ("ARM: OMAP2+: hwmod: remove
prm_clkdm, cm_clkdm; allow hwmods to have no clockdomain").

So convert an existing pr_warning() to a pr_debug() (regarding missing
clockdomains in clocks), and add a pr_debug() for missing hwmod
clockdomains.  It's still useful to enable these messages for
debugging, since missing clockdomains can cause hard-to-debug problems
with power management; see for example commit
6c4a057bffe9823221eab547e11fac181dc18a2b ("ARM: OMAP4: clock data:
Force a DPLL clkdm/pwrdm ON before a relock").

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 18a2df38265d..4f6b50f220c5 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -696,7 +696,7 @@ static int _init_main_clk(struct omap_hwmod *oh)
         clk_prepare(oh->_clk);
 
         if (!oh->_clk->clkdm)
-                pr_warning("omap_hwmod: %s: missing clockdomain for %s.\n",
+                pr_debug("omap_hwmod: %s: missing clockdomain for %s.\n",
                            oh->name, oh->main_clk);
 
         return ret;
@@ -1454,8 +1454,10 @@ static struct omap_hwmod *_lookup(const char *name)
  */
 static int _init_clkdm(struct omap_hwmod *oh)
 {
-        if (!oh->clkdm_name)
+        if (!oh->clkdm_name) {
+                pr_debug("omap_hwmod: %s: missing clockdomain\n", oh->name);
                 return 0;
+        }
 
         oh->clkdm = clkdm_lookup(oh->clkdm_name);
         if (!oh->clkdm) {