[PATCH v2 8/8] clk: clocking-wizard: Use separate notifier_block for each clock

[Shubhrajyoti Datta]

A struct notifier_block has a single 'next' pointer, so registering the
same instance to two different notification chains corrupts the linked
lists. Use a dedicated nb_axi for the s_axi_aclk notifier chain.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxx>
patch added for notifiew_block

---

(no changes since v1)

 drivers/clk/xilinx/clk-xlnx-clock-wizard.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
index 289c32ab5cd8..bcbfb4341dba 100644
--- a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
+++ b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
@@ -126,7 +126,8 @@ enum clk_wzrd_int_clks {
 /**
  * struct clk_wzrd - Clock wizard private data structure
  *
- * @nb:			Notifier block
+ * @nb:			Notifier block for clk_in1
+ * @nb_axi:		Notifier block for s_axi_aclk
  * @base:		Memory base
  * @clk_in1:		Handle to input clock 'clk_in1'
  * @axi_clk:		Handle to input clock 's_axi_aclk'
@@ -137,6 +138,7 @@ enum clk_wzrd_int_clks {
  */
 struct clk_wzrd {
 	struct notifier_block nb;
+	struct notifier_block nb_axi;
 	void __iomem *base;
 	struct clk *clk_in1;
 	struct clk *axi_clk;
@@ -1318,8 +1320,10 @@ static int clk_wzrd_probe(struct platform_device *pdev)
 				dev_warn(&pdev->dev,
 					 "unable to register clock notifier\n");
 
+			clk_wzrd->nb_axi.notifier_call = clk_wzrd_clk_notifier;
+
 			ret = devm_clk_notifier_register(&pdev->dev, clk_wzrd->axi_clk,
-							 &clk_wzrd->nb);
+							 &clk_wzrd->nb_axi);
 			if (ret)
 				dev_warn(&pdev->dev,
 					 "unable to register clock notifier\n");
-- 
2.34.1