diff --git a/arch/arm/include/asm/cpuidle.h b/arch/arm/include/asm/cpuidle.h
index 0d67ed682e0772..bc4ffa7ca04c7a 100644
--- a/arch/arm/include/asm/cpuidle.h
+++ b/arch/arm/include/asm/cpuidle.h
@@ -7,9 +7,11 @@
 #ifdef CONFIG_CPU_IDLE
 extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index);
+#define __cpuidle_method_section __used __section("__cpuidle_method_of_table")
 #else
 static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index) { return -ENODEV; }
+#define __cpuidle_method_section __maybe_unused /* drop silently */
 #endif
 
 /* Common ARM WFI state */
@@ -42,8 +44,7 @@ struct of_cpuidle_method {
 
 #define CPUIDLE_METHOD_OF_DECLARE(name, _method, _ops)			\
 	static const struct of_cpuidle_method __cpuidle_method_of_table_##name \
-	__used __section("__cpuidle_method_of_table")			\
-	= { .method = _method, .ops = _ops }
+	__cpuidle_method_section = { .method = _method, .ops = _ops }
 
 extern int arm_cpuidle_suspend(int index);
 
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 193b723fe3bd73..c58996c1e23093 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -684,6 +684,7 @@ static void xenvif_disconnect_queue(struct xenvif_queue *queue)
 {
 	if (queue->task) {
 		kthread_stop(queue->task);
+		put_task_struct(queue->task);
 		queue->task = NULL;
 	}
 
@@ -745,6 +746,11 @@ int xenvif_connect_data(struct xenvif_queue *queue,
 	if (IS_ERR(task))
 		goto kthread_err;
 	queue->task = task;
+	/*
+	 * Take a reference to the task in order to prevent it from being freed
+	 * if the thread function returns before kthread_stop is called.
+	 */
+	get_task_struct(task);
 
 	task = kthread_run(xenvif_dealloc_kthread, queue,
 			   "%s-dealloc", queue->name);
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 9d84d9245490e8..3e7a38525cb3f6 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1031,7 +1031,7 @@ config REGULATOR_RT5033
 	  current source, LDO and Buck.
 
 config REGULATOR_RTMV20
-	tristate "RTMV20 Laser Diode Regulator"
+	tristate "Richtek RTMV20 Laser Diode Regulator"
 	depends on I2C
 	select REGMAP_I2C
 	help
diff --git a/drivers/regulator/atc260x-regulator.c b/drivers/regulator/atc260x-regulator.c
index d8b429955d33fe..05147d2c384289 100644
--- a/drivers/regulator/atc260x-regulator.c
+++ b/drivers/regulator/atc260x-regulator.c
@@ -28,16 +28,16 @@ static const struct linear_range atc2609a_dcdc_voltage_ranges[] = {
 
 static const struct linear_range atc2609a_ldo_voltage_ranges0[] = {
 	REGULATOR_LINEAR_RANGE(700000, 0, 15, 100000),
-	REGULATOR_LINEAR_RANGE(2100000, 16, 28, 100000),
+	REGULATOR_LINEAR_RANGE(2100000, 0, 12, 100000),
 };
 
 static const struct linear_range atc2609a_ldo_voltage_ranges1[] = {
 	REGULATOR_LINEAR_RANGE(850000, 0, 15, 100000),
-	REGULATOR_LINEAR_RANGE(2100000, 16, 27, 100000),
+	REGULATOR_LINEAR_RANGE(2100000, 0, 11, 100000),
 };
 
 static const unsigned int atc260x_ldo_voltage_range_sel[] = {
-	0x0, 0x1,
+	0x0, 0x20,
 };
 
 static int atc260x_dcdc_set_voltage_time_sel(struct regulator_dev *rdev,
@@ -411,7 +411,7 @@ enum atc2609a_reg_ids {
 	.owner = THIS_MODULE, \
 }
 
-#define atc2609a_reg_desc_ldo_range_pick(num, n_range) { \
+#define atc2609a_reg_desc_ldo_range_pick(num, n_range, n_volt) { \
 	.name = "LDO"#num, \
 	.supply_name = "ldo"#num, \
 	.of_match = of_match_ptr("ldo"#num), \
@@ -421,6 +421,7 @@ enum atc2609a_reg_ids {
 	.type = REGULATOR_VOLTAGE, \
 	.linear_ranges = atc2609a_ldo_voltage_ranges##n_range, \
 	.n_linear_ranges = ARRAY_SIZE(atc2609a_ldo_voltage_ranges##n_range), \
+	.n_voltages = n_volt, \
 	.vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
 	.vsel_mask = GENMASK(4, 1), \
 	.vsel_range_reg = ATC2609A_PMU_LDO##num##_CTL0, \
@@ -458,12 +459,12 @@ static const struct regulator_desc atc2609a_reg[] = {
 	atc2609a_reg_desc_ldo_bypass(0),
 	atc2609a_reg_desc_ldo_bypass(1),
 	atc2609a_reg_desc_ldo_bypass(2),
-	atc2609a_reg_desc_ldo_range_pick(3, 0),
-	atc2609a_reg_desc_ldo_range_pick(4, 0),
+	atc2609a_reg_desc_ldo_range_pick(3, 0, 29),
+	atc2609a_reg_desc_ldo_range_pick(4, 0, 29),
 	atc2609a_reg_desc_ldo(5),
-	atc2609a_reg_desc_ldo_range_pick(6, 1),
-	atc2609a_reg_desc_ldo_range_pick(7, 0),
-	atc2609a_reg_desc_ldo_range_pick(8, 0),
+	atc2609a_reg_desc_ldo_range_pick(6, 1, 28),
+	atc2609a_reg_desc_ldo_range_pick(7, 0, 29),
+	atc2609a_reg_desc_ldo_range_pick(8, 0, 29),
 	atc2609a_reg_desc_ldo_fixed(9),
 };
 
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index e61295b30503f2..b1eb4696199304 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -334,7 +334,7 @@ BD718XX_OPS(bd71837_buck_regulator_ops, regulator_list_voltage_linear_range,
 	    NULL);
 
 BD718XX_OPS(bd71837_buck_regulator_nolinear_ops, regulator_list_voltage_table,
-	    regulator_map_voltage_ascend, bd718xx_set_voltage_sel_restricted,
+	    regulator_map_voltage_ascend, bd71837_set_voltage_sel_restricted,
 	    regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
 	    NULL);
 /*
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f192bf19492ed5..e20e77e4c159df 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1425,6 +1425,12 @@ static int set_machine_constraints(struct regulator_dev *rdev)
 	 * and we have control then make sure it is enabled.
 	 */
 	if (rdev->constraints->always_on || rdev->constraints->boot_on) {
+		/* If we want to enable this regulator, make sure that we know
+		 * the supplying regulator.
+		 */
+		if (rdev->supply_name && !rdev->supply)
+			return -EPROBE_DEFER;
+
 		if (rdev->supply) {
 			ret = regulator_enable(rdev->supply);
 			if (ret < 0) {
diff --git a/drivers/regulator/cros-ec-regulator.c b/drivers/regulator/cros-ec-regulator.c
index eb3fc1db4edc81..c4754f3cf23377 100644
--- a/drivers/regulator/cros-ec-regulator.c
+++ b/drivers/regulator/cros-ec-regulator.c
@@ -225,8 +225,9 @@ static int cros_ec_regulator_probe(struct platform_device *pdev)
 
 	drvdata->dev = devm_regulator_register(dev, &drvdata->desc, &cfg);
 	if (IS_ERR(drvdata->dev)) {
+		ret = PTR_ERR(drvdata->dev);
 		dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
-		return PTR_ERR(drvdata->dev);
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, drvdata);
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 08cbf688e14d3f..e6692509025802 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -280,7 +280,7 @@ static unsigned int da9121_map_mode(unsigned int mode)
 	case DA9121_BUCK_MODE_FORCE_PFM:
 		return REGULATOR_MODE_STANDBY;
 	default:
-		return -EINVAL;
+		return REGULATOR_MODE_INVALID;
 	}
 }
 
@@ -317,7 +317,7 @@ static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev)
 {
 	struct da9121 *chip = rdev_get_drvdata(rdev);
 	int id = rdev_get_id(rdev);
-	unsigned int val;
+	unsigned int val, mode;
 	int ret = 0;
 
 	ret = regmap_read(chip->regmap, da9121_mode_field[id].reg, &val);
@@ -326,7 +326,11 @@ static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev)
 		return -EINVAL;
 	}
 
-	return da9121_map_mode(val & da9121_mode_field[id].msk);
+	mode = da9121_map_mode(val & da9121_mode_field[id].msk);
+	if (mode == REGULATOR_MODE_INVALID)
+		return -EINVAL;
+
+	return mode;
 }
 
 static const struct regulator_ops da9121_buck_ops = {
diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c
index f3918f03aaf3df..26f06f685b1b68 100644
--- a/drivers/regulator/fan53555.c
+++ b/drivers/regulator/fan53555.c
@@ -55,7 +55,6 @@
 
 #define FAN53555_NVOLTAGES	64	/* Numbers of voltages */
 #define FAN53526_NVOLTAGES	128
-#define TCS4525_NVOLTAGES	127	/* Numbers of voltages */
 
 #define TCS_VSEL_NSEL_MASK	0x7f
 #define TCS_VSEL0_MODE		(1 << 7)
@@ -376,7 +375,7 @@ static int fan53555_voltages_setup_tcs(struct fan53555_device_info *di)
 	/* Init voltage range and step */
 	di->vsel_min = 600000;
 	di->vsel_step = 6250;
-	di->vsel_count = TCS4525_NVOLTAGES;
+	di->vsel_count = FAN53526_NVOLTAGES;
 
 	return 0;
 }
diff --git a/drivers/regulator/fan53880.c b/drivers/regulator/fan53880.c
index e83eb4fb1876a0..1684faf82ed259 100644
--- a/drivers/regulator/fan53880.c
+++ b/drivers/regulator/fan53880.c
@@ -51,6 +51,7 @@ static const struct regulator_ops fan53880_ops = {
 		      REGULATOR_LINEAR_RANGE(800000, 0xf, 0x73, 25000),	\
 		},							\
 		.n_linear_ranges = 2,					\
+		.n_voltages =	   0x74,				\
 		.vsel_reg =	   FAN53880_LDO ## _num ## VOUT,	\
 		.vsel_mask =	   0x7f,				\
 		.enable_reg =	   FAN53880_ENABLE,			\
@@ -76,6 +77,7 @@ static const struct regulator_desc fan53880_regulators[] = {
 		      REGULATOR_LINEAR_RANGE(600000, 0x1f, 0xf7, 12500),
 		},
 		.n_linear_ranges = 2,
+		.n_voltages =	   0xf8,
 		.vsel_reg =	   FAN53880_BUCKVOUT,
 		.vsel_mask =	   0x7f,
 		.enable_reg =	   FAN53880_ENABLE,
@@ -95,6 +97,7 @@ static const struct regulator_desc fan53880_regulators[] = {
 		      REGULATOR_LINEAR_RANGE(3000000, 0x4, 0x70, 25000),
 		},
 		.n_linear_ranges = 2,
+		.n_voltages =	   0x71,
 		.vsel_reg =	   FAN53880_BOOSTVOUT,
 		.vsel_mask =	   0x7f,
 		.enable_reg =	   FAN53880_ENABLE_BOOST,
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 02ad83153e19af..34e255c235d4c1 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -88,10 +88,15 @@ static int reg_domain_disable(struct regulator_dev *rdev)
 {
 	struct fixed_voltage_data *priv = rdev_get_drvdata(rdev);
 	struct device *dev = rdev->dev.parent;
+	int ret;
+
+	ret = dev_pm_genpd_set_performance_state(dev, 0);
+	if (ret)
+		return ret;
 
 	priv->enable_counter--;
 
-	return dev_pm_genpd_set_performance_state(dev, 0);
+	return 0;
 }
 
 static int reg_is_enabled(struct regulator_dev *rdev)
diff --git a/drivers/regulator/helpers.c b/drivers/regulator/helpers.c
index 0e16e31c968f12..ad2237a95572a7 100644
--- a/drivers/regulator/helpers.c
+++ b/drivers/regulator/helpers.c
@@ -948,7 +948,7 @@ int regulator_set_ramp_delay_regmap(struct regulator_dev *rdev, int ramp_delay)
 	int ret;
 	unsigned int sel;
 
-	if (!rdev->desc->n_ramp_values)
+	if (WARN_ON(!rdev->desc->n_ramp_values || !rdev->desc->ramp_delay_table))
 		return -EINVAL;
 
 	ret = find_closest_bigger(ramp_delay, rdev->desc->ramp_delay_table,
diff --git a/drivers/regulator/hi6421v600-regulator.c b/drivers/regulator/hi6421v600-regulator.c
index f6a14e9c3cbfef..d6340bb4929674 100644
--- a/drivers/regulator/hi6421v600-regulator.c
+++ b/drivers/regulator/hi6421v600-regulator.c
@@ -3,7 +3,7 @@
 // Device driver for regulators in Hisi IC
 //
 // Copyright (c) 2013 Linaro Ltd.
-// Copyright (c) 2011 Hisilicon.
+// Copyright (c) 2011 HiSilicon Ltd.
 // Copyright (c) 2020-2021 Huawei Technologies Co., Ltd
 //
 // Guodong Xu <guodong.xu@linaro.org>
@@ -83,7 +83,7 @@ static const unsigned int ldo34_voltages[] = {
 			.owner		= THIS_MODULE,			       \
 			.volt_table	= vtable,			       \
 			.n_voltages	= ARRAY_SIZE(vtable),		       \
-			.vsel_mask	= (1 << (ARRAY_SIZE(vtable) - 1)) - 1, \
+			.vsel_mask	= ARRAY_SIZE(vtable) - 1,	       \
 			.vsel_reg	= vreg,				       \
 			.enable_reg	= ereg,				       \
 			.enable_mask	= emask,			       \
diff --git a/drivers/regulator/hi655x-regulator.c b/drivers/regulator/hi655x-regulator.c
index ac2ee2030211a3..68cdb173196d69 100644
--- a/drivers/regulator/hi655x-regulator.c
+++ b/drivers/regulator/hi655x-regulator.c
@@ -2,7 +2,7 @@
 //
 // Device driver for regulators in Hi655x IC
 //
-// Copyright (c) 2016 Hisilicon.
+// Copyright (c) 2016 HiSilicon Ltd.
 //
 // Authors:
 // Chen Feng <puck.chen@hisilicon.com>
diff --git a/drivers/regulator/max77620-regulator.c b/drivers/regulator/max77620-regulator.c
index 8d9731e4052bf2..3cf8f085170a0a 100644
--- a/drivers/regulator/max77620-regulator.c
+++ b/drivers/regulator/max77620-regulator.c
@@ -814,6 +814,13 @@ static int max77620_regulator_probe(struct platform_device *pdev)
 	config.dev = dev;
 	config.driver_data = pmic;
 
+	/*
+	 * Set of_node_reuse flag to prevent driver core from attempting to
+	 * claim any pinmux resources already claimed by the parent device.
+	 * Otherwise PMIC driver will fail to re-probe.
+	 */
+	device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
 	for (id = 0; id < MAX77620_NUM_REGS; id++) {
 		struct regulator_dev *rdev;
 		struct regulator_desc *rdesc;
@@ -839,12 +846,10 @@ static int max77620_regulator_probe(struct platform_device *pdev)
 			return ret;
 
 		rdev = devm_regulator_register(dev, rdesc, &config);
-		if (IS_ERR(rdev)) {
-			ret = PTR_ERR(rdev);
-			dev_err(dev, "Regulator registration %s failed: %d\n",
-				rdesc->name, ret);
-			return ret;
-		}
+		if (IS_ERR(rdev))
+			return dev_err_probe(dev, PTR_ERR(rdev),
+					     "Regulator registration %s failed\n",
+					     rdesc->name);
 	}
 
 	return 0;
diff --git a/drivers/regulator/mt6315-regulator.c b/drivers/regulator/mt6315-regulator.c
index 9edc34981ee0a2..6b8be52c3772a0 100644
--- a/drivers/regulator/mt6315-regulator.c
+++ b/drivers/regulator/mt6315-regulator.c
@@ -59,7 +59,7 @@ static const struct linear_range mt_volt_range1[] = {
 	REGULATOR_LINEAR_RANGE(0, 0, 0xbf, 6250),
 };
 
-static unsigned int mt6315_map_mode(u32 mode)
+static unsigned int mt6315_map_mode(unsigned int mode)
 {
 	switch (mode) {
 	case MT6315_BUCK_MODE_AUTO:
diff --git a/drivers/regulator/rt4801-regulator.c b/drivers/regulator/rt4801-regulator.c
index 2055a9cb13ba54..7a87788d3f0922 100644
--- a/drivers/regulator/rt4801-regulator.c
+++ b/drivers/regulator/rt4801-regulator.c
@@ -66,7 +66,7 @@ static int rt4801_enable(struct regulator_dev *rdev)
 	struct gpio_descs *gpios = priv->enable_gpios;
 	int id = rdev_get_id(rdev), ret;
 
-	if (gpios->ndescs <= id) {
+	if (!gpios || gpios->ndescs <= id) {
 		dev_warn(&rdev->dev, "no dedicated gpio can control\n");
 		goto bypass_gpio;
 	}
@@ -88,7 +88,7 @@ static int rt4801_disable(struct regulator_dev *rdev)
 	struct gpio_descs *gpios = priv->enable_gpios;
 	int id = rdev_get_id(rdev);
 
-	if (gpios->ndescs <= id) {
+	if (!gpios || gpios->ndescs <= id) {
 		dev_warn(&rdev->dev, "no dedicated gpio can control\n");
 		goto bypass_gpio;
 	}
diff --git a/drivers/regulator/rtmv20-regulator.c b/drivers/regulator/rtmv20-regulator.c
index 852fb2596ffdad..4bca64de0f672d 100644
--- a/drivers/regulator/rtmv20-regulator.c
+++ b/drivers/regulator/rtmv20-regulator.c
@@ -27,6 +27,7 @@
 #define RTMV20_REG_LDIRQ	0x30
 #define RTMV20_REG_LDSTAT	0x40
 #define RTMV20_REG_LDMASK	0x50
+#define RTMV20_MAX_REGS		(RTMV20_REG_LDMASK + 1)
 
 #define RTMV20_VID_MASK		GENMASK(7, 4)
 #define RICHTEK_VID		0x80
@@ -103,9 +104,47 @@ static int rtmv20_lsw_disable(struct regulator_dev *rdev)
 	return 0;
 }
 
+static int rtmv20_lsw_set_current_limit(struct regulator_dev *rdev, int min_uA,
+					int max_uA)
+{
+	int sel;
+
+	if (min_uA > RTMV20_LSW_MAXUA || max_uA < RTMV20_LSW_MINUA)
+		return -EINVAL;
+
+	if (max_uA > RTMV20_LSW_MAXUA)
+		max_uA = RTMV20_LSW_MAXUA;
+
+	sel = (max_uA - RTMV20_LSW_MINUA) / RTMV20_LSW_STEPUA;
+
+	/* Ensure the selected setting is still in range */
+	if ((sel * RTMV20_LSW_STEPUA + RTMV20_LSW_MINUA) < min_uA)
+		return -EINVAL;
+
+	sel <<= ffs(rdev->desc->csel_mask) - 1;
+
+	return regmap_update_bits(rdev->regmap, rdev->desc->csel_reg,
+				  rdev->desc->csel_mask, sel);
+}
+
+static int rtmv20_lsw_get_current_limit(struct regulator_dev *rdev)
+{
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &val);
+	if (ret)
+		return ret;
+
+	val &= rdev->desc->csel_mask;
+	val >>= ffs(rdev->desc->csel_mask) - 1;
+
+	return val * RTMV20_LSW_STEPUA + RTMV20_LSW_MINUA;
+}
+
 static const struct regulator_ops rtmv20_regulator_ops = {
-	.set_current_limit = regulator_set_current_limit_regmap,
-	.get_current_limit = regulator_get_current_limit_regmap,
+	.set_current_limit = rtmv20_lsw_set_current_limit,
+	.get_current_limit = rtmv20_lsw_get_current_limit,
 	.enable = rtmv20_lsw_enable,
 	.disable = rtmv20_lsw_disable,
 	.is_enabled = regulator_is_enabled_regmap,
@@ -275,6 +314,7 @@ static const struct regmap_config rtmv20_regmap_config = {
 	.val_bits = 8,
 	.cache_type = REGCACHE_RBTREE,
 	.max_register = RTMV20_REG_LDMASK,
+	.num_reg_defaults_raw = RTMV20_MAX_REGS,
 
 	.writeable_reg = rtmv20_is_accessible_reg,
 	.readable_reg = rtmv20_is_accessible_reg,
diff --git a/drivers/regulator/scmi-regulator.c b/drivers/regulator/scmi-regulator.c
index bbadf72b94e8c1..1f02f60ad1366f 100644
--- a/drivers/regulator/scmi-regulator.c
+++ b/drivers/regulator/scmi-regulator.c
@@ -173,7 +173,7 @@ scmi_config_linear_regulator_mappings(struct scmi_regulator *sreg,
 		sreg->desc.uV_step =
 			vinfo->levels_uv[SCMI_VOLTAGE_SEGMENT_STEP];
 		sreg->desc.linear_min_sel = 0;
-		sreg->desc.n_voltages = delta_uV / sreg->desc.uV_step;
+		sreg->desc.n_voltages = (delta_uV / sreg->desc.uV_step) + 1;
 		sreg->desc.ops = &scmi_reg_linear_ops;
 	}
 
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index 8965fe61c8b44d..fe40626e45aa82 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -68,7 +68,7 @@
 #define BCM2835_SPI_FIFO_SIZE		64
 #define BCM2835_SPI_FIFO_SIZE_3_4	48
 #define BCM2835_SPI_DMA_MIN_LENGTH	96
-#define BCM2835_SPI_NUM_CS		4   /* raise as necessary */
+#define BCM2835_SPI_NUM_CS		24  /* raise as necessary */
 #define BCM2835_SPI_MODE_BITS	(SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \
 				| SPI_NO_CS | SPI_3WIRE)
 
@@ -1195,6 +1195,12 @@ static int bcm2835_spi_setup(struct spi_device *spi)
 	struct gpio_chip *chip;
 	u32 cs;
 
+	if (spi->chip_select >= BCM2835_SPI_NUM_CS) {
+		dev_err(&spi->dev, "only %d chip-selects supported\n",
+			BCM2835_SPI_NUM_CS - 1);
+		return -EINVAL;
+	}
+
 	/*
 	 * Precalculate SPI slave's CS register value for ->prepare_message():
 	 * The driver always uses software-controlled GPIO chip select, hence
@@ -1288,7 +1294,7 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 	ctlr->use_gpio_descriptors = true;
 	ctlr->mode_bits = BCM2835_SPI_MODE_BITS;
 	ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
-	ctlr->num_chipselect = BCM2835_SPI_NUM_CS;
+	ctlr->num_chipselect = 3;
 	ctlr->setup = bcm2835_spi_setup;
 	ctlr->transfer_one = bcm2835_spi_transfer_one;
 	ctlr->handle_err = bcm2835_spi_handle_err;
diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c
index 6a6af85aebfd80..27d0087f868841 100644
--- a/drivers/spi/spi-bitbang.c
+++ b/drivers/spi/spi-bitbang.c
@@ -184,6 +184,8 @@ int spi_bitbang_setup(struct spi_device *spi)
 {
 	struct spi_bitbang_cs	*cs = spi->controller_state;
 	struct spi_bitbang	*bitbang;
+	bool			initial_setup = false;
+	int			retval;
 
 	bitbang = spi_master_get_devdata(spi->master);
 
@@ -192,22 +194,30 @@ int spi_bitbang_setup(struct spi_device *spi)
 		if (!cs)
 			return -ENOMEM;
 		spi->controller_state = cs;
+		initial_setup = true;
 	}
 
 	/* per-word shift register access, in hardware or bitbanging */
 	cs->txrx_word = bitbang->txrx_word[spi->mode & (SPI_CPOL|SPI_CPHA)];
-	if (!cs->txrx_word)
-		return -EINVAL;
+	if (!cs->txrx_word) {
+		retval = -EINVAL;
+		goto err_free;
+	}
 
 	if (bitbang->setup_transfer) {
-		int retval = bitbang->setup_transfer(spi, NULL);
+		retval = bitbang->setup_transfer(spi, NULL);
 		if (retval < 0)
-			return retval;
+			goto err_free;
 	}
 
 	dev_dbg(&spi->dev, "%s, %u nsec/bit\n", __func__, 2 * cs->nsecs);
 
 	return 0;
+
+err_free:
+	if (initial_setup)
+		kfree(cs);
+	return retval;
 }
 EXPORT_SYMBOL_GPL(spi_bitbang_setup);
 
diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c
index d0e5aa18b7bad7..bdf94cc7be1afe 100644
--- a/drivers/spi/spi-fsl-spi.c
+++ b/drivers/spi/spi-fsl-spi.c
@@ -440,6 +440,7 @@ static int fsl_spi_setup(struct spi_device *spi)
 {
 	struct mpc8xxx_spi *mpc8xxx_spi;
 	struct fsl_spi_reg __iomem *reg_base;
+	bool initial_setup = false;
 	int retval;
 	u32 hw_mode;
 	struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi);
@@ -452,6 +453,7 @@ static int fsl_spi_setup(struct spi_device *spi)
 		if (!cs)
 			return -ENOMEM;
 		spi_set_ctldata(spi, cs);
+		initial_setup = true;
 	}
 	mpc8xxx_spi = spi_master_get_devdata(spi->master);
 
@@ -475,6 +477,8 @@ static int fsl_spi_setup(struct spi_device *spi)
 	retval = fsl_spi_setup_transfer(spi, NULL);
 	if (retval < 0) {
 		cs->hw_mode = hw_mode; /* Restore settings */
+		if (initial_setup)
+			kfree(cs);
 		return retval;
 	}
 
diff --git a/drivers/spi/spi-omap-uwire.c b/drivers/spi/spi-omap-uwire.c
index 71402f71ddd850..df28c6664aba68 100644
--- a/drivers/spi/spi-omap-uwire.c
+++ b/drivers/spi/spi-omap-uwire.c
@@ -424,15 +424,22 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 static int uwire_setup(struct spi_device *spi)
 {
 	struct uwire_state *ust = spi->controller_state;
+	bool initial_setup = false;
+	int status;
 
 	if (ust == NULL) {
 		ust = kzalloc(sizeof(*ust), GFP_KERNEL);
 		if (ust == NULL)
 			return -ENOMEM;
 		spi->controller_state = ust;
+		initial_setup = true;
 	}
 
-	return uwire_setup_transfer(spi, NULL);
+	status = uwire_setup_transfer(spi, NULL);
+	if (status && initial_setup)
+		kfree(ust);
+
+	return status;
 }
 
 static void uwire_cleanup(struct spi_device *spi)
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 999c2273641642..ede7f05e5ced7b 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -1032,8 +1032,22 @@ static void omap2_mcspi_release_dma(struct spi_master *master)
 	}
 }
 
+static void omap2_mcspi_cleanup(struct spi_device *spi)
+{
+	struct omap2_mcspi_cs	*cs;
+
+	if (spi->controller_state) {
+		/* Unlink controller state from context save list */
+		cs = spi->controller_state;
+		list_del(&cs->node);
+
+		kfree(cs);
+	}
+}
+
 static int omap2_mcspi_setup(struct spi_device *spi)
 {
+	bool			initial_setup = false;
 	int			ret;
 	struct omap2_mcspi	*mcspi = spi_master_get_devdata(spi->master);
 	struct omap2_mcspi_regs	*ctx = &mcspi->ctx;
@@ -1051,35 +1065,28 @@ static int omap2_mcspi_setup(struct spi_device *spi)
 		spi->controller_state = cs;
 		/* Link this to context save list */
 		list_add_tail(&cs->node, &ctx->cs);
+		initial_setup = true;
 	}
 
 	ret = pm_runtime_get_sync(mcspi->dev);
 	if (ret < 0) {
 		pm_runtime_put_noidle(mcspi->dev);
+		if (initial_setup)
+			omap2_mcspi_cleanup(spi);
 
 		return ret;
 	}
 
 	ret = omap2_mcspi_setup_transfer(spi, NULL);
+	if (ret && initial_setup)
+		omap2_mcspi_cleanup(spi);
+
 	pm_runtime_mark_last_busy(mcspi->dev);
 	pm_runtime_put_autosuspend(mcspi->dev);
 
 	return ret;
 }
 
-static void omap2_mcspi_cleanup(struct spi_device *spi)
-{
-	struct omap2_mcspi_cs	*cs;
-
-	if (spi->controller_state) {
-		/* Unlink controller state from context save list */
-		cs = spi->controller_state;
-		list_del(&cs->node);
-
-		kfree(cs);
-	}
-}
-
 static irqreturn_t omap2_mcspi_irq_handler(int irq, void *data)
 {
 	struct omap2_mcspi *mcspi = data;
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 5e59ba075bc7ae..8ee0cc07177740 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1254,6 +1254,8 @@ static int setup_cs(struct spi_device *spi, struct chip_data *chip,
 		chip->gpio_cs_inverted = spi->mode & SPI_CS_HIGH;
 
 		err = gpiod_direction_output(gpiod, !chip->gpio_cs_inverted);
+		if (err)
+			gpiod_put(chip->gpiod_cs);
 	}
 
 	return err;
@@ -1267,6 +1269,7 @@ static int setup(struct spi_device *spi)
 	struct driver_data *drv_data =
 		spi_controller_get_devdata(spi->controller);
 	uint tx_thres, tx_hi_thres, rx_thres;
+	int err;
 
 	switch (drv_data->ssp_type) {
 	case QUARK_X1000_SSP:
@@ -1413,7 +1416,11 @@ static int setup(struct spi_device *spi)
 	if (drv_data->ssp_type == CE4100_SSP)
 		return 0;
 
-	return setup_cs(spi, chip, chip_info);
+	err = setup_cs(spi, chip, chip_info);
+	if (err)
+		kfree(chip);
+
+	return err;
 }
 
 static void cleanup(struct spi_device *spi)
diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index 7e640ccc7e7742..594f6413620863 100644
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -294,7 +294,7 @@ static int stm32_qspi_wait_cmd(struct stm32_qspi *qspi,
 	int err = 0;
 
 	if (!op->data.nbytes)
-		return stm32_qspi_wait_nobusy(qspi);
+		goto wait_nobusy;
 
 	if (readl_relaxed(qspi->io_base + QSPI_SR) & SR_TCF)
 		goto out;
@@ -315,6 +315,9 @@ static int stm32_qspi_wait_cmd(struct stm32_qspi *qspi,
 out:
 	/* clear flags */
 	writel_relaxed(FCR_CTCF | FCR_CTEF, qspi->io_base + QSPI_FCR);
+wait_nobusy:
+	if (!err)
+		err = stm32_qspi_wait_nobusy(qspi);
 
 	return err;
 }
diff --git a/drivers/spi/spi-zynq-qspi.c b/drivers/spi/spi-zynq-qspi.c
index 5a3d81c31d0407..9262c6418463b6 100644
--- a/drivers/spi/spi-zynq-qspi.c
+++ b/drivers/spi/spi-zynq-qspi.c
@@ -678,14 +678,14 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	xqspi->irq = platform_get_irq(pdev, 0);
 	if (xqspi->irq <= 0) {
 		ret = -ENXIO;
-		goto remove_master;
+		goto clk_dis_all;
 	}
 	ret = devm_request_irq(&pdev->dev, xqspi->irq, zynq_qspi_irq,
 			       0, pdev->name, xqspi);
 	if (ret != 0) {
 		ret = -ENXIO;
 		dev_err(&pdev->dev, "request_irq failed\n");
-		goto remove_master;
+		goto clk_dis_all;
 	}
 
 	ret = of_property_read_u32(np, "num-cs",
@@ -693,8 +693,9 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		ctlr->num_chipselect = 1;
 	} else if (num_cs > ZYNQ_QSPI_MAX_NUM_CS) {
+		ret = -EINVAL;
 		dev_err(&pdev->dev, "only 2 chip selects are available\n");
-		goto remove_master;
+		goto clk_dis_all;
 	} else {
 		ctlr->num_chipselect = num_cs;
 	}
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 3edb6204b93704..a523bb86915d0d 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -730,7 +730,7 @@ static int afs_writepages_region(struct address_space *mapping,
 			return ret;
 		}
 
-		start += ret * PAGE_SIZE;
+		start += ret;
 
 		cond_resched();
 	} while (wbc->nr_to_write > 0);
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 58bbf334265b73..7118ebe38fa62e 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2674,6 +2674,11 @@ static int proc_pident_readdir(struct file *file, struct dir_context *ctx,
 }
 
 #ifdef CONFIG_SECURITY
+static int proc_pid_attr_open(struct inode *inode, struct file *file)
+{
+	return __mem_open(inode, file, PTRACE_MODE_READ_FSCREDS);
+}
+
 static ssize_t proc_pid_attr_read(struct file * file, char __user * buf,
 				  size_t count, loff_t *ppos)
 {
@@ -2704,7 +2709,7 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
 	int rv;
 
 	/* A task may only write when it was the opener. */
-	if (file->f_cred != current_real_cred())
+	if (file->private_data != current->mm)
 		return -EPERM;
 
 	rcu_read_lock();
@@ -2754,9 +2759,11 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
 }
 
 static const struct file_operations proc_pid_attr_operations = {
+	.open		= proc_pid_attr_open,
 	.read		= proc_pid_attr_read,
 	.write		= proc_pid_attr_write,
 	.llseek		= generic_file_llseek,
+	.release	= mem_release,
 };
 
 #define LSM_DIR_OPS(LSM) \
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 40a9c101565ebe..17325416e2dee2 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -960,6 +960,7 @@
 #ifdef CONFIG_AMD_MEM_ENCRYPT
 #define PERCPU_DECRYPTED_SECTION					\
 	. = ALIGN(PAGE_SIZE);						\
+	*(.data..decrypted)						\
 	*(.data..percpu..decrypted)					\
 	. = ALIGN(PAGE_SIZE);
 #else
diff --git a/include/linux/mfd/rohm-bd70528.h b/include/linux/mfd/rohm-bd70528.h
index a57af878fd0cdc..4a5966475a35aa 100644
--- a/include/linux/mfd/rohm-bd70528.h
+++ b/include/linux/mfd/rohm-bd70528.h
@@ -26,9 +26,7 @@ struct bd70528_data {
 	struct mutex rtc_timer_lock;
 };
 
-#define BD70528_BUCK_VOLTS 17
-#define BD70528_BUCK_VOLTS 17
-#define BD70528_BUCK_VOLTS 17
+#define BD70528_BUCK_VOLTS 0x10
 #define BD70528_LDO_VOLTS 0x20
 
 #define BD70528_REG_BUCK1_EN	0x0F
diff --git a/include/linux/mfd/rohm-bd71828.h b/include/linux/mfd/rohm-bd71828.h
index c7ab69c87ee8c6..3b5f3a7db4bd66 100644
--- a/include/linux/mfd/rohm-bd71828.h
+++ b/include/linux/mfd/rohm-bd71828.h
@@ -26,11 +26,11 @@ enum {
 	BD71828_REGULATOR_AMOUNT,
 };
 
-#define BD71828_BUCK1267_VOLTS		0xEF
-#define BD71828_BUCK3_VOLTS		0x10
-#define BD71828_BUCK4_VOLTS		0x20
-#define BD71828_BUCK5_VOLTS		0x10
-#define BD71828_LDO_VOLTS		0x32
+#define BD71828_BUCK1267_VOLTS		0x100
+#define BD71828_BUCK3_VOLTS		0x20
+#define BD71828_BUCK4_VOLTS		0x40
+#define BD71828_BUCK5_VOLTS		0x20
+#define BD71828_LDO_VOLTS		0x40
 /* LDO6 is fixed 1.8V voltage */
 #define BD71828_LDO_6_VOLTAGE		1800000