[PATCH 05/16] clk: at91: generated: set audio_pll_allowed in at91_clk_register_generated()

Alexandre Belloni
2018-07-17T22:27:46Z

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>
---
drivers/clk/at91/clk-generated.c | 27 ++++++++++-----------------
1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
index e709a12269c0..6dfee6e588c4 100644
--- 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;

--
2.18.0