linux-kernel - [PATCH 4.17 055/220] soc: rockchip: power-domain: Fix wrong value when power up pd with writemask

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Message-Id: <20180701160910.637487959@linuxfoundation.org>
Date:   Sun,  1 Jul 2018 18:21:19 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Finley Xiao <finley.xiao@...k-chips.com>,
        Elaine Zhang <zhangqing@...k-chips.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Subject: [PATCH 4.17 055/220] soc: rockchip: power-domain: Fix wrong value when power up pd with writemask

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Finley Xiao <finley.xiao@...k-chips.com>

commit 9e59c5f66c624b43c766a9fe3b2430e0e976bf0e upstream.

Solve the pd could only ever turn off but never turn them on again,
if the pd registers have the writemask bits.

So far this affects the rk3328 only.

Fixes: 79bb17ce8edb ("soc: rockchip: power-domain: Support domain control in hiword-registers")
Cc: stable@...r.kernel.org
Signed-off-by: Finley Xiao <finley.xiao@...k-chips.com>
Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/soc/rockchip/pm_domains.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -255,7 +255,7 @@ static void rockchip_do_pmu_set_power_do
 		return;
 	else if (pd->info->pwr_w_mask)
 		regmap_write(pmu->regmap, pmu->info->pwr_offset,
-			     on ? pd->info->pwr_mask :
+			     on ? pd->info->pwr_w_mask :
 			     (pd->info->pwr_mask | pd->info->pwr_w_mask));
 	else
 		regmap_update_bits(pmu->regmap, pmu->info->pwr_offset,