clk: at91: generated: set audio_pll_allowed in at91_clk_register_generated()

Set gck->audio_pll_allowed in at91_clk_register_generated. This makes it
easier to do it from code that is not parsing device tree.

Also, this fixes an issue where the resulting clk_hw can be dereferenced
before being tested for error.

Fixes: 1a1a36d72e3d ("clk: at91: clk-generated: make gclk determine audio_pll rate")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
index e709a12..6dfee6e 100644 (file)
--- a/drivers/clk/at91/clk-generated.c
+++ b/drivers/clk/at91/clk-generated.c
@@ -280,7 +280,7 @@ static void clk_generated_startup(struct clk_generated *gck)
 static struct clk_hw * __init
 at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock,
                            const char *name, const char **parent_names,
-                           u8 num_parents, u8 id,
+                           u8 num_parents, u8 id, bool pll_audio,
                            const struct clk_range *range)
 {
        struct clk_generated *gck;
@@ -304,6 +304,7 @@ at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock,
        gck->regmap = regmap;
        gck->lock = lock;
        gck->range = *range;
+       gck->audio_pll_allowed = pll_audio;
 
        clk_generated_startup(gck);
        hw = &gck->hw;
@@ -329,7 +330,6 @@ static void __init of_sama5d2_clk_generated_setup(struct device_node *np)
        struct device_node *gcknp;
        struct clk_range range = CLK_RANGE(0, 0);
        struct regmap *regmap;
-       struct clk_generated *gck;
 
        num_parents = of_clk_get_parent_count(np);
        if (num_parents == 0 || num_parents > GENERATED_SOURCE_MAX)
@@ -346,6 +346,8 @@ static void __init of_sama5d2_clk_generated_setup(struct device_node *np)
                return;
 
        for_each_child_of_node(np, gcknp) {
+               bool pll_audio = false;
+
                if (of_property_read_u32(gcknp, "reg", &id))
                        continue;
 
@@ -358,23 +360,14 @@ static void __init of_sama5d2_clk_generated_setup(struct device_node *np)
                of_at91_get_clk_range(gcknp, "atmel,clk-output-range",
                                      &range);
 
+               if (of_device_is_compatible(np, "atmel,sama5d2-clk-generated") &&
+                   (id == GCK_ID_I2S0 || id == GCK_ID_I2S1 ||
+                    id == GCK_ID_CLASSD))
+                       pll_audio = true;
+
                hw = at91_clk_register_generated(regmap, &pmc_pcr_lock, name,
                                                  parent_names, num_parents,
-                                                 id, &range);
-
-               gck = to_clk_generated(hw);
-
-               if (of_device_is_compatible(np,
-                                           "atmel,sama5d2-clk-generated")) {
-                       if (gck->id == GCK_ID_I2S0 || gck->id == GCK_ID_I2S1 ||
-                           gck->id == GCK_ID_CLASSD)
-                               gck->audio_pll_allowed = true;
-                       else
-                               gck->audio_pll_allowed = false;
-               } else {
-                       gck->audio_pll_allowed = false;
-               }
-
+                                                 id, pll_audio, &range);
                if (IS_ERR(hw))
                        continue;