Commit 65188f07 authored by Abel Vesa's avatar Abel Vesa Committed by Shawn Guo
Browse files

clk: imx: gate2: Add locking in is_enabled op 



Protect against enabling/disabling the gate while we're
checking if it is enabled.

Signed-off-by: default avatarAbel Vesa <abel.vesa@nxp.com>
Reviewed-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent bcd418a6

drivers/clk/imx/clk-gate2.c

+9 −1
Original line number Diff line number Diff line
@@ -101,9 +101,17 @@ static int clk_gate2_reg_is_enabled(void __iomem *reg, u8 bit_idx, 
static int clk_gate2_is_enabled(struct clk_hw *hw)

{

	struct clk_gate2 *gate = to_clk_gate2(hw);

	unsigned long flags;

	int ret = 0;



	spin_lock_irqsave(gate->lock, flags);



	return clk_gate2_reg_is_enabled(gate->reg, gate->bit_idx,

	ret = clk_gate2_reg_is_enabled(gate->reg, gate->bit_idx,

					gate->cgr_val, gate->cgr_mask);



	spin_unlock_irqrestore(gate->lock, flags);



	return ret;

}



static void clk_gate2_disable_unused(struct clk_hw *hw)

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