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From: Peng Fan <peng.fan@nxp.com>
To: "sboyd@kernel.org" <sboyd@kernel.org>,
	"shawnguo@kernel.org" <shawnguo@kernel.org>,
	"s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
	"festevam@gmail.com" <festevam@gmail.com>,
	Abel Vesa <abel.vesa@nxp.com>
Cc: "kernel@pengutronix.de" <kernel@pengutronix.de>,
	dl-linux-imx <linux-imx@nxp.com>,
	Anson Huang <anson.huang@nxp.com>, Jacky Bai <ping.bai@nxp.com>,
	"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Leonard Crestez <leonard.crestez@nxp.com>,
	Peng Fan <peng.fan@nxp.com>
Subject: [PATCH V2] clk: imx: clk-composite-8m: add lock to gate/mux
Date: Tue, 3 Dec 2019 02:02:37 +0000	[thread overview]
Message-ID: <1575338427-22347-1-git-send-email-peng.fan@nxp.com> (raw)

From: Peng Fan <peng.fan@nxp.com>

There is a lock to divider in the composite driver, but that's not
enough. lock to gate/mux are also needed to provide exclusive access
to the register.

Fixes: d3ff9728134e ("clk: imx: Add imx composite clock")
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 Add Shawn's tag and typo fix.

 drivers/clk/imx/clk-composite-8m.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/imx/clk-composite-8m.c b/drivers/clk/imx/clk-composite-8m.c
index e0f25983e80f..20f7c91c03d2 100644
--- a/drivers/clk/imx/clk-composite-8m.c
+++ b/drivers/clk/imx/clk-composite-8m.c
@@ -142,6 +142,7 @@ struct clk_hw *imx8m_clk_hw_composite_flags(const char *name,
 	mux->reg = reg;
 	mux->shift = PCG_PCS_SHIFT;
 	mux->mask = PCG_PCS_MASK;
+	mux->lock = &imx_ccm_lock;
 
 	div = kzalloc(sizeof(*div), GFP_KERNEL);
 	if (!div)
@@ -161,6 +162,7 @@ struct clk_hw *imx8m_clk_hw_composite_flags(const char *name,
 	gate_hw = &gate->hw;
 	gate->reg = reg;
 	gate->bit_idx = PCG_CGC_SHIFT;
+	gate->lock = &imx_ccm_lock;
 
 	hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
 			mux_hw, &clk_mux_ops, div_hw,
-- 
2.16.4


                 reply	other threads:[~2019-12-03  2:02 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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