staging: hikey9xx: hi6421v600-regulator: get rid of an static data

Move it to be inside the private data struct.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/ff8b6852c788fd476743eb4ce556e4a97f4b928e.1611212783.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c
index 54ad074..e25e596 100644 (file)
--- 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 */