[PATCH AUTOSEL 5.12 022/104] usb: common: usb-conn-gpio: fix NULL pointer dereference of charger

[PATCH AUTOSEL 5.12 022/104] usb: common: usb-conn-gpio: fix NULL pointer dereference of charger

[Sasha Levin]

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

[ Upstream commit 880287910b1892ed2cb38977893b947382a09d21 ]

When power on system with OTG cable, IDDIG's interrupt arises before
the charger registration, it will cause a NULL pointer dereference,
fix the issue by registering the power supply before requesting
IDDIG/VBUS irq.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1621406386-18838-1-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/common/usb-conn-gpio.c | 44 ++++++++++++++++++------------
 1 file changed, 26 insertions(+), 18 deletions(-)

diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c
index 6c4e3a19f42c..c9545a4eff66 100644
--- a/drivers/usb/common/usb-conn-gpio.c
+++ b/drivers/usb/common/usb-conn-gpio.c
@@ -149,14 +149,32 @@ static int usb_charger_get_property(struct power_supply *psy,
 	return 0;
 }
 
-static int usb_conn_probe(struct platform_device *pdev)
+static int usb_conn_psy_register(struct usb_conn_info *info)
 {
-	struct device *dev = &pdev->dev;
-	struct power_supply_desc *desc;
-	struct usb_conn_info *info;
+	struct device *dev = info->dev;
+	struct power_supply_desc *desc = &info->desc;
 	struct power_supply_config cfg = {
 		.of_node = dev->of_node,
 	};
+
+	desc->name = "usb-charger";
+	desc->properties = usb_charger_properties;
+	desc->num_properties = ARRAY_SIZE(usb_charger_properties);
+	desc->get_property = usb_charger_get_property;
+	desc->type = POWER_SUPPLY_TYPE_USB;
+	cfg.drv_data = info;
+
+	info->charger = devm_power_supply_register(dev, desc, &cfg);
+	if (IS_ERR(info->charger))
+		dev_err(dev, "Unable to register charger\n");
+
+	return PTR_ERR_OR_ZERO(info->charger);
+}
+
+static int usb_conn_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct usb_conn_info *info;
 	bool need_vbus = true;
 	int ret = 0;
 
@@ -218,6 +236,10 @@ static int usb_conn_probe(struct platform_device *pdev)
 		return PTR_ERR(info->role_sw);
 	}
 
+	ret = usb_conn_psy_register(info);
+	if (ret)
+		goto put_role_sw;
+
 	if (info->id_gpiod) {
 		info->id_irq = gpiod_to_irq(info->id_gpiod);
 		if (info->id_irq < 0) {
@@ -252,20 +274,6 @@ static int usb_conn_probe(struct platform_device *pdev)
 		}
 	}
 
-	desc = &info->desc;
-	desc->name = "usb-charger";
-	desc->properties = usb_charger_properties;
-	desc->num_properties = ARRAY_SIZE(usb_charger_properties);
-	desc->get_property = usb_charger_get_property;
-	desc->type = POWER_SUPPLY_TYPE_USB;
-	cfg.drv_data = info;
-
-	info->charger = devm_power_supply_register(dev, desc, &cfg);
-	if (IS_ERR(info->charger)) {
-		dev_err(dev, "Unable to register charger\n");
-		return PTR_ERR(info->charger);
-	}
-
 	platform_set_drvdata(pdev, info);
 
 	/* Perform initial detection */
-- 
2.30.2


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[PATCH AUTOSEL 5.12 047/104] mfd: da9052/stmpe: Add and modify MODULE_DEVICE_TABLE

[Sasha Levin]

From: Zou Wei <zou_wei@huawei.com>

[ Upstream commit 4700ef326556ed74aba188f12396740a8c1c21dd ]

This patch adds/modifies MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mfd/da9052-i2c.c | 1 +
 drivers/mfd/stmpe-i2c.c  | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/da9052-i2c.c b/drivers/mfd/da9052-i2c.c
index 47556d2d9abe..8ebfc7bbe4e0 100644
--- a/drivers/mfd/da9052-i2c.c
+++ b/drivers/mfd/da9052-i2c.c
@@ -113,6 +113,7 @@ static const struct i2c_device_id da9052_i2c_id[] = {
 	{"da9053-bc", DA9053_BC},
 	{}
 };
+MODULE_DEVICE_TABLE(i2c, da9052_i2c_id);
 
 #ifdef CONFIG_OF
 static const struct of_device_id dialog_dt_ids[] = {
diff --git a/drivers/mfd/stmpe-i2c.c b/drivers/mfd/stmpe-i2c.c
index 61aa020199f5..cd2f45257dc1 100644
--- a/drivers/mfd/stmpe-i2c.c
+++ b/drivers/mfd/stmpe-i2c.c
@@ -109,7 +109,7 @@ static const struct i2c_device_id stmpe_i2c_id[] = {
 	{ "stmpe2403", STMPE2403 },
 	{ }
 };
-MODULE_DEVICE_TABLE(i2c, stmpe_id);
+MODULE_DEVICE_TABLE(i2c, stmpe_i2c_id);
 
 static struct i2c_driver stmpe_i2c_driver = {
 	.driver = {
-- 
2.30.2


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[PATCH AUTOSEL 5.12 051/104] fsi: Add missing MODULE_DEVICE_TABLE

[Sasha Levin]

From: Zou Wei <zou_wei@huawei.com>

[ Upstream commit 19a52178125c1e8b84444d85f2ce34c0964b4a91 ]

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Link: https://lore.kernel.org/r/1620896249-52769-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/fsi/fsi-master-aspeed.c | 1 +
 drivers/fsi/fsi-master-ast-cf.c | 1 +
 drivers/fsi/fsi-master-gpio.c   | 1 +
 drivers/fsi/fsi-occ.c           | 1 +
 4 files changed, 4 insertions(+)

diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index 90dbe58ca1ed..dbad73162c83 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -645,6 +645,7 @@ static const struct of_device_id fsi_master_aspeed_match[] = {
 	{ .compatible = "aspeed,ast2600-fsi-master" },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, fsi_master_aspeed_match);
 
 static struct platform_driver fsi_master_aspeed_driver = {
 	.driver = {
diff --git a/drivers/fsi/fsi-master-ast-cf.c b/drivers/fsi/fsi-master-ast-cf.c
index 57a779a89b07..70c03e304d6c 100644
--- a/drivers/fsi/fsi-master-ast-cf.c
+++ b/drivers/fsi/fsi-master-ast-cf.c
@@ -1427,6 +1427,7 @@ static const struct of_device_id fsi_master_acf_match[] = {
 	{ .compatible = "aspeed,ast2500-cf-fsi-master" },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, fsi_master_acf_match);
 
 static struct platform_driver fsi_master_acf = {
 	.driver = {
diff --git a/drivers/fsi/fsi-master-gpio.c b/drivers/fsi/fsi-master-gpio.c
index aa97c4a250cb..7d5f29b4b595 100644
--- a/drivers/fsi/fsi-master-gpio.c
+++ b/drivers/fsi/fsi-master-gpio.c
@@ -882,6 +882,7 @@ static const struct of_device_id fsi_master_gpio_match[] = {
 	{ .compatible = "fsi-master-gpio" },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, fsi_master_gpio_match);
 
 static struct platform_driver fsi_master_gpio_driver = {
 	.driver = {
diff --git a/drivers/fsi/fsi-occ.c b/drivers/fsi/fsi-occ.c
index 10ca2e290655..f9a88083e5f3 100644
--- a/drivers/fsi/fsi-occ.c
+++ b/drivers/fsi/fsi-occ.c
@@ -635,6 +635,7 @@ static const struct of_device_id occ_match[] = {
 	},
 	{ },
 };
+MODULE_DEVICE_TABLE(of, occ_match);
 
 static struct platform_driver occ_driver = {
 	.driver = {
-- 
2.30.2


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[PATCH AUTOSEL 5.12 056/104] iommu/arm-smmu-qcom: Skip the TTBR1 quirk for db820c.

[Sasha Levin]

From: Eric Anholt <eric@anholt.net>

[ Upstream commit a242f4297cfe3f4589a7620dcd42cc503607fc6b ]

db820c wants to use the qcom smmu path to get HUPCF set (which keeps
the GPU from wedging and then sometimes wedging the kernel after a
page fault), but it doesn't have separate pagetables support yet in
drm/msm so we can't go all the way to the TTBR1 path.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210326231303.3071950-1-eric@anholt.net
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index 98b3a1c2a181..44a427833385 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -130,6 +130,16 @@ static int qcom_adreno_smmu_alloc_context_bank(struct arm_smmu_domain *smmu_doma
 	return __arm_smmu_alloc_bitmap(smmu->context_map, start, count);
 }
 
+static bool qcom_adreno_can_do_ttbr1(struct arm_smmu_device *smmu)
+{
+	const struct device_node *np = smmu->dev->of_node;
+
+	if (of_device_is_compatible(np, "qcom,msm8996-smmu-v2"))
+		return false;
+
+	return true;
+}
+
 static int qcom_adreno_smmu_init_context(struct arm_smmu_domain *smmu_domain,
 		struct io_pgtable_cfg *pgtbl_cfg, struct device *dev)
 {
@@ -144,7 +154,8 @@ static int qcom_adreno_smmu_init_context(struct arm_smmu_domain *smmu_domain,
 	 * be AARCH64 stage 1 but double check because the arm-smmu code assumes
 	 * that is the case when the TTBR1 quirk is enabled
 	 */
-	if ((smmu_domain->stage == ARM_SMMU_DOMAIN_S1) &&
+	if (qcom_adreno_can_do_ttbr1(smmu_domain->smmu) &&
+	    (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) &&
 	    (smmu_domain->cfg.fmt == ARM_SMMU_CTX_FMT_AARCH64))
 		pgtbl_cfg->quirks |= IO_PGTABLE_QUIRK_ARM_TTBR1;
 
-- 
2.30.2


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[PATCH AUTOSEL 5.12 060/104] iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails

[Sasha Levin]

From: Xiyu Yang <xiyuyang19@fudan.edu.cn>

[ Upstream commit 1adf30f198c26539a62d761e45af72cde570413d ]

arm_smmu_rpm_get() invokes pm_runtime_get_sync(), which increases the
refcount of the "smmu" even though the return value is less than 0.

The reference counting issue happens in some error handling paths of
arm_smmu_rpm_get() in its caller functions. When arm_smmu_rpm_get()
fails, the caller functions forget to decrease the refcount of "smmu"
increased by arm_smmu_rpm_get(), causing a refcount leak.

Fix this issue by calling pm_runtime_resume_and_get() instead of
pm_runtime_get_sync() in arm_smmu_rpm_get(), which can keep the refcount
balanced in case of failure.

Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Link: https://lore.kernel.org/r/1623293672-17954-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/arm/arm-smmu/arm-smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index d8c6bfde6a61..128c2c87b4e5 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -74,7 +74,7 @@ static bool using_legacy_binding, using_generic_binding;
 static inline int arm_smmu_rpm_get(struct arm_smmu_device *smmu)
 {
 	if (pm_runtime_enabled(smmu->dev))
-		return pm_runtime_get_sync(smmu->dev);
+		return pm_runtime_resume_and_get(smmu->dev);
 
 	return 0;
 }
-- 
2.30.2


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[PATCH AUTOSEL 5.12 061/104] iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation

[Sasha Levin]

From: Xiyu Yang <xiyuyang19@fudan.edu.cn>

[ Upstream commit 7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 ]

The reference counting issue happens in several exception handling paths
of arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the
function forgets to decrease the refcount of "smmu" increased by
arm_smmu_rpm_get(), causing a refcount leak.

Fix this issue by jumping to "out" label when those error scenarios
occur.

Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/1623293391-17261-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/arm/arm-smmu/arm-smmu.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 128c2c87b4e5..c6ff32797a23 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -1268,6 +1268,7 @@ static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
 	u64 phys;
 	unsigned long va, flags;
 	int ret, idx = cfg->cbndx;
+	phys_addr_t addr = 0;
 
 	ret = arm_smmu_rpm_get(smmu);
 	if (ret < 0)
@@ -1287,6 +1288,7 @@ static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
 		dev_err(dev,
 			"iova to phys timed out on %pad. Falling back to software table walk.\n",
 			&iova);
+		arm_smmu_rpm_put(smmu);
 		return ops->iova_to_phys(ops, iova);
 	}
 
@@ -1295,12 +1297,14 @@ static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
 	if (phys & ARM_SMMU_CB_PAR_F) {
 		dev_err(dev, "translation fault!\n");
 		dev_err(dev, "PAR = 0x%llx\n", phys);
-		return 0;
+		goto out;
 	}
 
+	addr = (phys & GENMASK_ULL(39, 12)) | (iova & 0xfff);
+out:
 	arm_smmu_rpm_put(smmu);
 
-	return (phys & GENMASK_ULL(39, 12)) | (iova & 0xfff);
+	return addr;
 }
 
 static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain,
-- 
2.30.2


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[PATCH AUTOSEL 5.12 064/104] gpio: zynq: Check return value of pm_runtime_get_sync

[Sasha Levin]

From: Srinivas Neeli <srinivas.neeli@xilinx.com>

[ Upstream commit a51b2fb94b04ab71e53a71b9fad03fa826941254 ]

Return value of "pm_runtime_get_sync" API was neither captured nor checked.
Fixed it by capturing the return value and then checking for any warning.

Addresses-Coverity: "check_return"
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpio/gpio-zynq.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index 3521c1dc3ac0..fb8684d70fe3 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -1001,8 +1001,11 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 static int zynq_gpio_remove(struct platform_device *pdev)
 {
 	struct zynq_gpio *gpio = platform_get_drvdata(pdev);
+	int ret;
 
-	pm_runtime_get_sync(&pdev->dev);
+	ret = pm_runtime_get_sync(&pdev->dev);
+	if (ret < 0)
+		dev_warn(&pdev->dev, "pm_runtime_get_sync() Failed\n");
 	gpiochip_remove(&gpio->chip);
 	clk_disable_unprepare(gpio->clk);
 	device_set_wakeup_capable(&pdev->dev, 0);
-- 
2.30.2


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[PATCH AUTOSEL 5.12 065/104] gpio: zynq: Check return value of irq_get_irq_data

[Sasha Levin]

From: Srinivas Neeli <srinivas.neeli@xilinx.com>

[ Upstream commit 35d7b72a632bc7afb15356f44005554af8697904 ]

In two different instances the return value of "irq_get_irq_data"
API was neither captured nor checked.
Fixed it by capturing the return value and then checking for any error.

Addresses-Coverity: "returned_null"
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpio/gpio-zynq.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index fb8684d70fe3..c288a7502de2 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -736,6 +736,11 @@ static int __maybe_unused zynq_gpio_suspend(struct device *dev)
 	struct zynq_gpio *gpio = dev_get_drvdata(dev);
 	struct irq_data *data = irq_get_irq_data(gpio->irq);
 
+	if (!data) {
+		dev_err(dev, "irq_get_irq_data() failed\n");
+		return -EINVAL;
+	}
+
 	if (!device_may_wakeup(dev))
 		disable_irq(gpio->irq);
 
@@ -753,6 +758,11 @@ static int __maybe_unused zynq_gpio_resume(struct device *dev)
 	struct irq_data *data = irq_get_irq_data(gpio->irq);
 	int ret;
 
+	if (!data) {
+		dev_err(dev, "irq_get_irq_data() failed\n");
+		return -EINVAL;
+	}
+
 	if (!device_may_wakeup(dev))
 		enable_irq(gpio->irq);
 
-- 
2.30.2


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