linux-kernel - [PATCH v2 07/13] staging: hikey970: get rid of an static data

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Date:   Mon, 18 Jan 2021 14:28:08 +0100
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mayulong <mayulong1@...wei.com>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 07/13] staging: hikey970: get rid of an static data

Move it to be inside the private data struct.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 drivers/staging/hikey9xx/hi6421v600-regulator.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c
index 1aed5b37fa23..8c64c0a86a3d 100644
--- a/drivers/staging/hikey9xx/hi6421v600-regulator.c
+++ b/drivers/staging/hikey9xx/hi6421v600-regulator.c
@@ -28,9 +28,10 @@ struct hi6421_spmi_reg_info {
 	struct hi6421_spmi_pmic *pmic;
 	u8			eco_mode_mask;
 	u32			eco_uA;
-};
 
-static DEFINE_MUTEX(enable_mutex);
+	/* Serialize regulator enable logic */
+	struct mutex enable_mutex;
+};
 
 static const unsigned int ldo3_voltages[] = {
 	1500000, 1550000, 1600000, 1650000,
@@ -118,7 +119,7 @@ static int hi6421_spmi_regulator_enable(struct regulator_dev *rdev)
 	struct hi6421_spmi_pmic *pmic = sreg->pmic;
 
 	/* cannot enable more than one regulator at one time */
-	mutex_lock(&enable_mutex);
+	mutex_lock(&sreg->enable_mutex);
 	usleep_range(HISI_REGS_ENA_PROTECT_TIME,
 		     HISI_REGS_ENA_PROTECT_TIME + 1000);
 
@@ -127,7 +128,7 @@ static int hi6421_spmi_regulator_enable(struct regulator_dev *rdev)
 			     rdev->desc->enable_mask,
 			     rdev->desc->enable_mask);
 
-	mutex_unlock(&enable_mutex);
+	mutex_unlock(&sreg->enable_mutex);
 
 	return 0;
 }
@@ -312,6 +313,7 @@ static int hi6421_spmi_regulator_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	sreg->pmic = pmic;
+	mutex_init(&sreg->enable_mutex);
 
 	for (i = 0; i < ARRAY_SIZE(regulator_info); i++) {
 		/* assign per-regulator data */
-- 
2.29.2