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Commit 7c2b115d authored by Mike Tipton's avatar Mike Tipton
Browse files

clk: qcom: clk-debug: Resume devices before accessing HW 



Resume and suspend devices in debugfs handlers around accessing HW
registers to prevent bus errors.

Change-Id: I9db208f0d82a504af60cf252e5d3691b9903f8cd
Signed-off-by: default avatarMike Tipton <mdtipton@codeaurora.org>
parent fdffc473

drivers/clk/qcom/clk-debug.c

+18 −0
Original line number Diff line number Diff line
@@ -266,12 +266,22 @@ static u32 get_mux_divs(struct clk_hw *mux) 


static int clk_debug_measure_get(void *data, u64 *val)

{

	struct clk_regmap *rclk = NULL;

	struct clk_debug_mux *mux;

	struct clk_hw *hw = data;

	struct clk_hw *parent;

	int ret = 0;

	u32 regval;



	if (clk_is_regmap_clk(hw))

		rclk = to_clk_regmap(hw);



	if (rclk) {

		ret = clk_runtime_get_regmap(rclk);

		if (ret)

			return ret;

	}



	mutex_lock(&clk_debug_lock);



	ret = clk_find_and_set_parent(measure, hw);
@@ -306,6 +316,8 @@ static int clk_debug_measure_get(void *data, u64 *val) 
	}

exit:

	mutex_unlock(&clk_debug_lock);

	if (rclk)

		clk_runtime_put_regmap(rclk);

	return ret;

}
@@ -501,8 +513,14 @@ static void clk_debug_print_hw(struct clk_hw *hw, struct seq_file *f) 


	if (clk_is_regmap_clk(hw)) {

		rclk = to_clk_regmap(hw);



		if (clk_runtime_get_regmap(rclk))

			return;



		if (rclk->ops && rclk->ops->list_registers)

			rclk->ops->list_registers(f, hw);



		clk_runtime_put_regmap(rclk);

	}

}