[PATCH AUTOSEL 4.19 01/11] platform/x86: dell-laptop: disable kbd backlight on Inspiron 10xx

[PATCH AUTOSEL 4.19 01/11] platform/x86: dell-laptop: disable kbd backlight on Inspiron 10xx

[Sasha Levin]

From: Pacien TRAN-GIRARD <pacien.trangirard@pacien.net>

[ Upstream commit 10b65e2915b2fcc606d173e98a972850101fb4c4 ]

This patch adds a quirk disabling keyboard backlight support for the
Dell Inspiron 1012 and 1018.

Those models wrongly report supporting keyboard backlight control
features (through SMBIOS tokens) even though they're not equipped with
a backlit keyboard. This led to broken controls being exposed
through sysfs by this driver which froze the system when used.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=107651
Signed-off-by: Pacien TRAN-GIRARD <pacien.trangirard@pacien.net>
Reviewed-by: Mario Limonciello <mario.limonciello@dell.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/platform/x86/dell-laptop.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 3433986d52200..949dbc8aab413 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -37,6 +37,7 @@
 
 struct quirk_entry {
 	bool touchpad_led;
+	bool kbd_led_not_present;
 	bool kbd_led_levels_off_1;
 	bool kbd_missing_ac_tag;
 
@@ -77,6 +78,10 @@ static struct quirk_entry quirk_dell_latitude_e6410 = {
 	.kbd_led_levels_off_1 = true,
 };
 
+static struct quirk_entry quirk_dell_inspiron_1012 = {
+	.kbd_led_not_present = true,
+};
+
 static struct platform_driver platform_driver = {
 	.driver = {
 		.name = "dell-laptop",
@@ -314,6 +319,24 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
 		},
 		.driver_data = &quirk_dell_latitude_e6410,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "Dell Inspiron 1012",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
+		},
+		.driver_data = &quirk_dell_inspiron_1012,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "Dell Inspiron 1018",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1018"),
+		},
+		.driver_data = &quirk_dell_inspiron_1012,
+	},
 	{ }
 };
 
@@ -1497,6 +1520,9 @@ static void kbd_init(void)
 {
 	int ret;
 
+	if (quirks && quirks->kbd_led_not_present)
+		return;
+
 	ret = kbd_init_info();
 	kbd_init_tokens();
 
-- 
2.20.1

[PATCH AUTOSEL 4.19 02/11] PCI: Add DMA alias quirk for Intel VCA NTB

[Sasha Levin]

From: Slawomir Pawlowski <slawomir.pawlowski@intel.com>

[ Upstream commit 56b4cd4b7da9ee95778eb5c8abea49f641ebfd91 ]

Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).

Similarly to MIC x200, we need to add DMA aliases to allow buffer access
when IOMMU is enabled.

Add aliases to allow computational unit access to host memory.  These
aliases mark the whole VCA device as one IOMMU group.

All possible slot numbers (0x20) are used, since we are unable to tell what
slot is used on other side.  This quirk is intended for both host and
computational unit sides.  The VCA devices have up to five functions: four
for DMA channels and one additional.

Link: https://lore.kernel.org/r/5683A335CC8BE1438C3C30C49DCC38DF637CED8E@IRSMSX102.ger.corp.intel.com
Signed-off-by: Slawomir Pawlowski <slawomir.pawlowski@intel.com>
Signed-off-by: Przemek Kitszel <przemyslawx.kitszel@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/quirks.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 20a57a48ae1e4..ae7b3a2ade0ef 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3986,6 +3986,40 @@ static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
 
+/*
+ * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
+ * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).
+ *
+ * Similarly to MIC x200, we need to add DMA aliases to allow buffer access
+ * when IOMMU is enabled.  These aliases allow computational unit access to
+ * host memory.  These aliases mark the whole VCA device as one IOMMU
+ * group.
+ *
+ * All possible slot numbers (0x20) are used, since we are unable to tell
+ * what slot is used on other side.  This quirk is intended for both host
+ * and computational unit sides.  The VCA devices have up to five functions
+ * (four for DMA channels and one additional).
+ */
+static void quirk_pex_vca_alias(struct pci_dev *pdev)
+{
+	const unsigned int num_pci_slots = 0x20;
+	unsigned int slot;
+
+	for (slot = 0; slot < num_pci_slots; slot++) {
+		pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0));
+		pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x1));
+		pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x2));
+		pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x3));
+		pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x4));
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias);
+
 /*
  * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
  * associated not at the root bus, but at a bridge below. This quirk avoids
-- 
2.20.1

[PATCH AUTOSEL 4.19 03/11] iommu/amd: Support multiple PCI DMA aliases in IRQ Remapping

From: Logan Gunthorpe <logang@deltatee.com>

[ Upstream commit 3c124435e8dd516df4b2fc983f4415386fd6edae ]

Non-Transparent Bridge (NTB) devices (among others) may have many DMA
aliases seeing the hardware will send requests with different device ids
depending on their origin across the bridged hardware.

See commit ad281ecf1c7d ("PCI: Add DMA alias quirk for Microsemi Switchtec
NTB") for more information on this.

The AMD IOMMU IRQ remapping functionality ignores all PCI aliases for
IRQs so if devices send an interrupt from one of their aliases they
will be blocked on AMD hardware with the IOMMU enabled.

To fix this, ensure IRQ remapping is enabled for all aliases with
MSI interrupts.

This is analogous to the functionality added to the Intel IRQ remapping
code in commit 3f0c625c6ae7 ("iommu/vt-d: Allow interrupts from the entire
bus for aliased devices")

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/amd_iommu.c | 37 ++++++++++++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 7 deletions(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 9991386fb7000..c60c9829d37fd 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3707,7 +3707,20 @@ static void set_remap_table_entry(struct amd_iommu *iommu, u16 devid,
 	iommu_flush_dte(iommu, devid);
 }
 
-static struct irq_remap_table *alloc_irq_table(u16 devid)
+static int set_remap_table_entry_alias(struct pci_dev *pdev, u16 alias,
+				       void *data)
+{
+	struct irq_remap_table *table = data;
+
+	irq_lookup_table[alias] = table;
+	set_dte_irq_entry(alias, table);
+
+	iommu_flush_dte(amd_iommu_rlookup_table[alias], alias);
+
+	return 0;
+}
+
+static struct irq_remap_table *alloc_irq_table(u16 devid, struct pci_dev *pdev)
 {
 	struct irq_remap_table *table = NULL;
 	struct irq_remap_table *new_table = NULL;
@@ -3753,7 +3766,12 @@ static struct irq_remap_table *alloc_irq_table(u16 devid)
 	table = new_table;
 	new_table = NULL;
 
-	set_remap_table_entry(iommu, devid, table);
+	if (pdev)
+		pci_for_each_dma_alias(pdev, set_remap_table_entry_alias,
+				       table);
+	else
+		set_remap_table_entry(iommu, devid, table);
+
 	if (devid != alias)
 		set_remap_table_entry(iommu, alias, table);
 
@@ -3770,7 +3788,8 @@ static struct irq_remap_table *alloc_irq_table(u16 devid)
 	return table;
 }
 
-static int alloc_irq_index(u16 devid, int count, bool align)
+static int alloc_irq_index(u16 devid, int count, bool align,
+			   struct pci_dev *pdev)
 {
 	struct irq_remap_table *table;
 	int index, c, alignment = 1;
@@ -3780,7 +3799,7 @@ static int alloc_irq_index(u16 devid, int count, bool align)
 	if (!iommu)
 		return -ENODEV;
 
-	table = alloc_irq_table(devid);
+	table = alloc_irq_table(devid, pdev);
 	if (!table)
 		return -ENODEV;
 
@@ -4213,7 +4232,7 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
 		struct irq_remap_table *table;
 		struct amd_iommu *iommu;
 
-		table = alloc_irq_table(devid);
+		table = alloc_irq_table(devid, NULL);
 		if (table) {
 			if (!table->min_index) {
 				/*
@@ -4230,11 +4249,15 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
 		} else {
 			index = -ENOMEM;
 		}
-	} else {
+	} else if (info->type == X86_IRQ_ALLOC_TYPE_MSI ||
+		   info->type == X86_IRQ_ALLOC_TYPE_MSIX) {
 		bool align = (info->type == X86_IRQ_ALLOC_TYPE_MSI);
 
-		index = alloc_irq_index(devid, nr_irqs, align);
+		index = alloc_irq_index(devid, nr_irqs, align, info->msi_dev);
+	} else {
+		index = alloc_irq_index(devid, nr_irqs, false, NULL);
 	}
+
 	if (index < 0) {
 		pr_warn("Failed to allocate IRTE\n");
 		ret = index;
-- 
2.20.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

[PATCH AUTOSEL 4.19 03/11] iommu/amd: Support multiple PCI DMA aliases in IRQ Remapping

[Sasha Levin]

From: Logan Gunthorpe <logang@deltatee.com>

[ Upstream commit 3c124435e8dd516df4b2fc983f4415386fd6edae ]

Non-Transparent Bridge (NTB) devices (among others) may have many DMA
aliases seeing the hardware will send requests with different device ids
depending on their origin across the bridged hardware.

See commit ad281ecf1c7d ("PCI: Add DMA alias quirk for Microsemi Switchtec
NTB") for more information on this.

The AMD IOMMU IRQ remapping functionality ignores all PCI aliases for
IRQs so if devices send an interrupt from one of their aliases they
will be blocked on AMD hardware with the IOMMU enabled.

To fix this, ensure IRQ remapping is enabled for all aliases with
MSI interrupts.

This is analogous to the functionality added to the Intel IRQ remapping
code in commit 3f0c625c6ae7 ("iommu/vt-d: Allow interrupts from the entire
bus for aliased devices")

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/amd_iommu.c | 37 ++++++++++++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 7 deletions(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 9991386fb7000..c60c9829d37fd 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3707,7 +3707,20 @@ static void set_remap_table_entry(struct amd_iommu *iommu, u16 devid,
 	iommu_flush_dte(iommu, devid);
 }
 
-static struct irq_remap_table *alloc_irq_table(u16 devid)
+static int set_remap_table_entry_alias(struct pci_dev *pdev, u16 alias,
+				       void *data)
+{
+	struct irq_remap_table *table = data;
+
+	irq_lookup_table[alias] = table;
+	set_dte_irq_entry(alias, table);
+
+	iommu_flush_dte(amd_iommu_rlookup_table[alias], alias);
+
+	return 0;
+}
+
+static struct irq_remap_table *alloc_irq_table(u16 devid, struct pci_dev *pdev)
 {
 	struct irq_remap_table *table = NULL;
 	struct irq_remap_table *new_table = NULL;
@@ -3753,7 +3766,12 @@ static struct irq_remap_table *alloc_irq_table(u16 devid)
 	table = new_table;
 	new_table = NULL;
 
-	set_remap_table_entry(iommu, devid, table);
+	if (pdev)
+		pci_for_each_dma_alias(pdev, set_remap_table_entry_alias,
+				       table);
+	else
+		set_remap_table_entry(iommu, devid, table);
+
 	if (devid != alias)
 		set_remap_table_entry(iommu, alias, table);
 
@@ -3770,7 +3788,8 @@ static struct irq_remap_table *alloc_irq_table(u16 devid)
 	return table;
 }
 
-static int alloc_irq_index(u16 devid, int count, bool align)
+static int alloc_irq_index(u16 devid, int count, bool align,
+			   struct pci_dev *pdev)
 {
 	struct irq_remap_table *table;
 	int index, c, alignment = 1;
@@ -3780,7 +3799,7 @@ static int alloc_irq_index(u16 devid, int count, bool align)
 	if (!iommu)
 		return -ENODEV;
 
-	table = alloc_irq_table(devid);
+	table = alloc_irq_table(devid, pdev);
 	if (!table)
 		return -ENODEV;
 
@@ -4213,7 +4232,7 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
 		struct irq_remap_table *table;
 		struct amd_iommu *iommu;
 
-		table = alloc_irq_table(devid);
+		table = alloc_irq_table(devid, NULL);
 		if (table) {
 			if (!table->min_index) {
 				/*
@@ -4230,11 +4249,15 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
 		} else {
 			index = -ENOMEM;
 		}
-	} else {
+	} else if (info->type == X86_IRQ_ALLOC_TYPE_MSI ||
+		   info->type == X86_IRQ_ALLOC_TYPE_MSIX) {
 		bool align = (info->type == X86_IRQ_ALLOC_TYPE_MSI);
 
-		index = alloc_irq_index(devid, nr_irqs, align);
+		index = alloc_irq_index(devid, nr_irqs, align, info->msi_dev);
+	} else {
+		index = alloc_irq_index(devid, nr_irqs, false, NULL);
 	}
+
 	if (index < 0) {
 		pr_warn("Failed to allocate IRTE\n");
 		ret = index;
-- 
2.20.1

[PATCH AUTOSEL 4.19 04/11] mfd: intel-lpss: Add default I2C device properties for Gemini Lake

[Sasha Levin]

From: Jarkko Nikula <jarkko.nikula@linux.intel.com>

[ Upstream commit 3f31bc67e4dc6a555341dffefe328ddd58e8b431 ]

It turned out Intel Gemini Lake doesn't use the same I2C timing
parameters as Broxton.

I got confirmation from the Windows team that Gemini Lake systems should
use updated timing parameters that differ from those used in Broxton
based systems.

Fixes: f80e78aa11ad ("mfd: intel-lpss: Add Intel Gemini Lake PCI IDs")
Tested-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mfd/intel-lpss-pci.c | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/drivers/mfd/intel-lpss-pci.c b/drivers/mfd/intel-lpss-pci.c
index c37c8bb860685..742d6c1973f4f 100644
--- a/drivers/mfd/intel-lpss-pci.c
+++ b/drivers/mfd/intel-lpss-pci.c
@@ -126,6 +126,18 @@ static const struct intel_lpss_platform_info apl_i2c_info = {
 	.properties = apl_i2c_properties,
 };
 
+static struct property_entry glk_i2c_properties[] = {
+	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 313),
+	PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
+	PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 290),
+	{ },
+};
+
+static const struct intel_lpss_platform_info glk_i2c_info = {
+	.clk_rate = 133000000,
+	.properties = glk_i2c_properties,
+};
+
 static const struct intel_lpss_platform_info cnl_i2c_info = {
 	.clk_rate = 216000000,
 	.properties = spt_i2c_properties,
@@ -165,14 +177,14 @@ static const struct pci_device_id intel_lpss_pci_ids[] = {
 	{ PCI_VDEVICE(INTEL, 0x1ac6), (kernel_ulong_t)&bxt_info },
 	{ PCI_VDEVICE(INTEL, 0x1aee), (kernel_ulong_t)&bxt_uart_info },
 	/* GLK */
-	{ PCI_VDEVICE(INTEL, 0x31ac), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31ae), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31b0), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31b2), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31b4), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31b6), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31b8), (kernel_ulong_t)&bxt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x31ba), (kernel_ulong_t)&bxt_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31ac), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31ae), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31b0), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31b2), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31b4), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31b6), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31b8), (kernel_ulong_t)&glk_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x31ba), (kernel_ulong_t)&glk_i2c_info },
 	{ PCI_VDEVICE(INTEL, 0x31bc), (kernel_ulong_t)&bxt_uart_info },
 	{ PCI_VDEVICE(INTEL, 0x31be), (kernel_ulong_t)&bxt_uart_info },
 	{ PCI_VDEVICE(INTEL, 0x31c0), (kernel_ulong_t)&bxt_uart_info },
-- 
2.20.1

[PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Sasha Levin]

From: Joel Stanley <joel@jms.id.au>

[ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]

This driver option is used by the AST2600 A0 boards to work around a
hardware issue.

Reviewed-by: C?dric Le Goater <clg@kaod.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/configs/aspeed_g5_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
index 02fa3a41add5c..247be6c23d2c6 100644
--- a/arch/arm/configs/aspeed_g5_defconfig
+++ b/arch/arm/configs/aspeed_g5_defconfig
@@ -138,6 +138,7 @@ CONFIG_SERIAL_8250_RUNTIME_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_ASPEED_VUART=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_ASPEED_KCS_IPMI_BMC=y
 CONFIG_ASPEED_BT_IPMI_BMC=y
-- 
2.20.1

[PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Sasha Levin]

From: Joel Stanley <joel@jms.id.au>

[ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]

This driver option is used by the AST2600 A0 boards to work around a
hardware issue.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/configs/aspeed_g5_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
index 02fa3a41add5c..247be6c23d2c6 100644
--- a/arch/arm/configs/aspeed_g5_defconfig
+++ b/arch/arm/configs/aspeed_g5_defconfig
@@ -138,6 +138,7 @@ CONFIG_SERIAL_8250_RUNTIME_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_ASPEED_VUART=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_ASPEED_KCS_IPMI_BMC=y
 CONFIG_ASPEED_BT_IPMI_BMC=y
-- 
2.20.1

[PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Sasha Levin]

From: Joel Stanley <joel@jms.id.au>

[ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]

This driver option is used by the AST2600 A0 boards to work around a
hardware issue.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/configs/aspeed_g5_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
index 02fa3a41add5c..247be6c23d2c6 100644
--- a/arch/arm/configs/aspeed_g5_defconfig
+++ b/arch/arm/configs/aspeed_g5_defconfig
@@ -138,6 +138,7 @@ CONFIG_SERIAL_8250_RUNTIME_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_ASPEED_VUART=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_ASPEED_KCS_IPMI_BMC=y
 CONFIG_ASPEED_BT_IPMI_BMC=y
-- 
2.20.1


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[PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Joel Stanley]

HI Sasha,

On Fri, 24 Jan 2020 at 01:17, Sasha Levin <sashal@kernel.org> wrote:
>
> From: Joel Stanley <joel@jms.id.au>
>
> [ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]
>
> This driver option is used by the AST2600 A0 boards to work around a
> hardware issue.

This hardware was only supported from 5.4+, so I think we can drop this patch.

Cheers,

Joel

>
> Reviewed-by: C?dric Le Goater <clg@kaod.org>
> Acked-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  arch/arm/configs/aspeed_g5_defconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
> index 02fa3a41add5c..247be6c23d2c6 100644
> --- a/arch/arm/configs/aspeed_g5_defconfig
> +++ b/arch/arm/configs/aspeed_g5_defconfig
> @@ -138,6 +138,7 @@ CONFIG_SERIAL_8250_RUNTIME_UARTS=6
>  CONFIG_SERIAL_8250_EXTENDED=y
>  CONFIG_SERIAL_8250_ASPEED_VUART=y
>  CONFIG_SERIAL_8250_SHARE_IRQ=y
> +CONFIG_SERIAL_8250_DW=y
>  CONFIG_SERIAL_OF_PLATFORM=y
>  CONFIG_ASPEED_KCS_IPMI_BMC=y
>  CONFIG_ASPEED_BT_IPMI_BMC=y
> --
> 2.20.1
>

Re: [PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Joel Stanley]

HI Sasha,

On Fri, 24 Jan 2020 at 01:17, Sasha Levin <sashal@kernel.org> wrote:
>
> From: Joel Stanley <joel@jms.id.au>
>
> [ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]
>
> This driver option is used by the AST2600 A0 boards to work around a
> hardware issue.

This hardware was only supported from 5.4+, so I think we can drop this patch.

Cheers,

Joel

>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> Acked-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  arch/arm/configs/aspeed_g5_defconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
> index 02fa3a41add5c..247be6c23d2c6 100644
> --- a/arch/arm/configs/aspeed_g5_defconfig
> +++ b/arch/arm/configs/aspeed_g5_defconfig
> @@ -138,6 +138,7 @@ CONFIG_SERIAL_8250_RUNTIME_UARTS=6
>  CONFIG_SERIAL_8250_EXTENDED=y
>  CONFIG_SERIAL_8250_ASPEED_VUART=y
>  CONFIG_SERIAL_8250_SHARE_IRQ=y
> +CONFIG_SERIAL_8250_DW=y
>  CONFIG_SERIAL_OF_PLATFORM=y
>  CONFIG_ASPEED_KCS_IPMI_BMC=y
>  CONFIG_ASPEED_BT_IPMI_BMC=y
> --
> 2.20.1
>

Re: [PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Joel Stanley]

HI Sasha,

On Fri, 24 Jan 2020 at 01:17, Sasha Levin <sashal@kernel.org> wrote:
>
> From: Joel Stanley <joel@jms.id.au>
>
> [ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]
>
> This driver option is used by the AST2600 A0 boards to work around a
> hardware issue.

This hardware was only supported from 5.4+, so I think we can drop this patch.

Cheers,

Joel

>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> Acked-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  arch/arm/configs/aspeed_g5_defconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
> index 02fa3a41add5c..247be6c23d2c6 100644
> --- a/arch/arm/configs/aspeed_g5_defconfig
> +++ b/arch/arm/configs/aspeed_g5_defconfig
> @@ -138,6 +138,7 @@ CONFIG_SERIAL_8250_RUNTIME_UARTS=6
>  CONFIG_SERIAL_8250_EXTENDED=y
>  CONFIG_SERIAL_8250_ASPEED_VUART=y
>  CONFIG_SERIAL_8250_SHARE_IRQ=y
> +CONFIG_SERIAL_8250_DW=y
>  CONFIG_SERIAL_OF_PLATFORM=y
>  CONFIG_ASPEED_KCS_IPMI_BMC=y
>  CONFIG_ASPEED_BT_IPMI_BMC=y
> --
> 2.20.1
>

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[PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Sasha Levin]

On Fri, Jan 24, 2020 at 01:21:40AM +0000, Joel Stanley wrote:
>HI Sasha,
>
>On Fri, 24 Jan 2020 at 01:17, Sasha Levin <sashal@kernel.org> wrote:
>>
>> From: Joel Stanley <joel@jms.id.au>
>>
>> [ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]
>>
>> This driver option is used by the AST2600 A0 boards to work around a
>> hardware issue.
>
>This hardware was only supported from 5.4+, so I think we can drop this patch.

I'll drop it for 4.19 and older, thanks!

-- 
Thanks,
Sasha

Re: [PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Sasha Levin]

On Fri, Jan 24, 2020 at 01:21:40AM +0000, Joel Stanley wrote:
>HI Sasha,
>
>On Fri, 24 Jan 2020 at 01:17, Sasha Levin <sashal@kernel.org> wrote:
>>
>> From: Joel Stanley <joel@jms.id.au>
>>
>> [ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]
>>
>> This driver option is used by the AST2600 A0 boards to work around a
>> hardware issue.
>
>This hardware was only supported from 5.4+, so I think we can drop this patch.

I'll drop it for 4.19 and older, thanks!

-- 
Thanks,
Sasha

Re: [PATCH AUTOSEL 4.19 05/11] ARM: config: aspeed-g5: Enable 8250_DW quirks

[Sasha Levin]

On Fri, Jan 24, 2020 at 01:21:40AM +0000, Joel Stanley wrote:
>HI Sasha,
>
>On Fri, 24 Jan 2020 at 01:17, Sasha Levin <sashal@kernel.org> wrote:
>>
>> From: Joel Stanley <joel@jms.id.au>
>>
>> [ Upstream commit a5331a7a87ec81d5228b7421acf831b2d0c0de26 ]
>>
>> This driver option is used by the AST2600 A0 boards to work around a
>> hardware issue.
>
>This hardware was only supported from 5.4+, so I think we can drop this patch.

I'll drop it for 4.19 and older, thanks!

-- 
Thanks,
Sasha

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 4.19 06/11] ARM: OMAP2+: SmartReflex: add omap_sr_pdata definition

[Sasha Levin]

From: Ben Dooks <ben.dooks@codethink.co.uk>

[ Upstream commit 2079fe6ea8cbd2fb2fbadba911f1eca6c362eb9b ]

The omap_sr_pdata is not declared but is exported, so add a
define for it to fix the following warning:

arch/arm/mach-omap2/pdata-quirks.c:609:36: warning: symbol 'omap_sr_pdata' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/power/smartreflex.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
index 7b81dad712de8..37d9b70ed8f0a 100644
--- a/include/linux/power/smartreflex.h
+++ b/include/linux/power/smartreflex.h
@@ -296,6 +296,9 @@ struct omap_sr_data {
 	struct voltagedomain		*voltdm;
 };
 
+
+extern struct omap_sr_data omap_sr_pdata[OMAP_SR_NR];
+
 #ifdef CONFIG_POWER_AVS_OMAP
 
 /* Smartreflex module enable/disable interface */
-- 
2.20.1

[PATCH AUTOSEL 4.19 07/11] usb-storage: Disable UAS on JMicron SATA enclosure

[Sasha Levin]

From: Laura Abbott <labbott@fedoraproject.org>

[ Upstream commit bc3bdb12bbb3492067c8719011576370e959a2e6 ]

Steve Ellis reported incorrect block sizes and alignement
offsets with a SATA enclosure. Adding a quirk to disable
UAS fixes the problems.

Reported-by: Steven Ellis <sellis@redhat.com>
Cc: Pacho Ramos <pachoramos@gmail.com>
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/storage/unusual_uas.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
index d0bdebd87ce3a..1b23741036ee8 100644
--- a/drivers/usb/storage/unusual_uas.h
+++ b/drivers/usb/storage/unusual_uas.h
@@ -87,12 +87,15 @@ UNUSUAL_DEV(0x2537, 0x1068, 0x0000, 0x9999,
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_IGNORE_UAS),
 
-/* Reported-by: Takeo Nakayama <javhera@gmx.com> */
+/*
+ * Initially Reported-by: Takeo Nakayama <javhera@gmx.com>
+ * UAS Ignore Reported by Steven Ellis <sellis@redhat.com>
+ */
 UNUSUAL_DEV(0x357d, 0x7788, 0x0000, 0x9999,
 		"JMicron",
 		"JMS566",
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
-		US_FL_NO_REPORT_OPCODES),
+		US_FL_NO_REPORT_OPCODES | US_FL_IGNORE_UAS),
 
 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
 UNUSUAL_DEV(0x4971, 0x1012, 0x0000, 0x9999,
-- 
2.20.1

[PATCH AUTOSEL 4.19 08/11] HID: Add quirk for Xin-Mo Dual Controller

[Sasha Levin]

From: Priit Laes <plaes@plaes.org>

[ Upstream commit c62f7cd8ed066a93a243643ebf57ca99f754388e ]

Without the quirk, joystick shows up as single controller
for both first and second player pads/pins.

Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-quirks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index 57d6fe9ed4163..b9529bed4d763 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -175,6 +175,7 @@ static const struct hid_device_id hid_quirks[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET), HID_QUIRK_MULTI_INPUT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS), HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD), HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE), HID_QUIRK_MULTI_INPUT },
 
 	{ 0 }
 };
-- 
2.20.1

[PATCH AUTOSEL 4.19 09/11] HID: ite: Add USB id match for Acer SW5-012 keyboard dock

[Sasha Levin]

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 8f18eca9ebc57d6b150237033f6439242907e0ba ]

The Acer SW5-012 2-in-1 keyboard dock uses a Synaptics S91028 touchpad
which is connected to an ITE 8595 USB keyboard controller chip.

This keyboard has the same quirk for its rfkill / airplane mode hotkey as
other keyboards with the ITE 8595 chip, it only sends a single release
event when pressed and released, it never sends a press event.

This commit adds this keyboards USB id to the hid-ite id-table, fixing
the rfkill key not working on this keyboard.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-ids.h | 1 +
 drivers/hid/hid-ite.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 1949d6fca53e5..f5d3da93f51a8 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -1074,6 +1074,7 @@
 #define USB_DEVICE_ID_SYNAPTICS_LTS2	0x1d10
 #define USB_DEVICE_ID_SYNAPTICS_HD	0x0ac3
 #define USB_DEVICE_ID_SYNAPTICS_QUAD_HD	0x1ac3
+#define USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012	0x2968
 #define USB_DEVICE_ID_SYNAPTICS_TP_V103	0x5710
 
 #define USB_VENDOR_ID_TEXAS_INSTRUMENTS	0x2047
diff --git a/drivers/hid/hid-ite.c b/drivers/hid/hid-ite.c
index 98b059d79bc89..2ce1eb0c92125 100644
--- a/drivers/hid/hid-ite.c
+++ b/drivers/hid/hid-ite.c
@@ -43,6 +43,9 @@ static int ite_event(struct hid_device *hdev, struct hid_field *field,
 static const struct hid_device_id ite_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) },
+	/* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS,
+			 USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, ite_devices);
-- 
2.20.1

[PATCH AUTOSEL 4.19 10/11] HID: Add quirk for incorrect input length on Lenovo Y720

[Sasha Levin]

From: Pavel Balan <admin@kryma.net>

[ Upstream commit fd0913768701612fc2b8ab9c8a5c019133e8d978 ]

Apply it to the Lenovo Y720 gaming laptop I2C peripheral then.

This fixes dmesg being flooded with errors visible on un-suspend
in Linux Mint 19 Cinnamon.

Example of error log:

<...>
[    4.326588] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4)
[    4.326845] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4)
[    4.327095] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4)
[    4.327341] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4)
[    4.327609] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4)
<...>

Example of fixed log (debug on)

<...>
[ 3731.333183] i2c_hid i2c-ITE33D1:00: input: 02 00
[ 3731.333581] i2c_hid i2c-ITE33D1:00: input: 02 00
[ 3731.333842] i2c_hid i2c-ITE33D1:00: input: 02 00
[ 3731.334107] i2c_hid i2c-ITE33D1:00: input: 02 00
[ 3731.334367] i2c_hid i2c-ITE33D1:00: input: 02 00
<...>

[jkosina@suse.cz: rebase onto more recent codebase]
Signed-off-by: Pavel Balan <admin@kryma.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-ids.h              |  1 +
 drivers/hid/i2c-hid/i2c-hid-core.c | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index f5d3da93f51a8..507a42d0f0c73 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -620,6 +620,7 @@
 #define USB_VENDOR_ID_ITE               0x048d
 #define USB_DEVICE_ID_ITE_LENOVO_YOGA   0x8386
 #define USB_DEVICE_ID_ITE_LENOVO_YOGA2  0x8350
+#define I2C_DEVICE_ID_ITE_LENOVO_LEGION_Y720	0x837a
 #define USB_DEVICE_ID_ITE_LENOVO_YOGA900	0x8396
 #define USB_DEVICE_ID_ITE8595		0x8595
 
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
index 0a39e444e3080..f2c8c59fc5823 100644
--- a/drivers/hid/i2c-hid/i2c-hid-core.c
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -52,6 +52,8 @@
 #define I2C_HID_QUIRK_DELAY_AFTER_SLEEP		BIT(3)
 #define I2C_HID_QUIRK_BOGUS_IRQ			BIT(4)
 #define I2C_HID_QUIRK_RESET_ON_RESUME		BIT(5)
+#define I2C_HID_QUIRK_BAD_INPUT_SIZE		BIT(6)
+
 
 /* flags */
 #define I2C_HID_STARTED		0
@@ -185,6 +187,8 @@ static const struct i2c_hid_quirks {
 		 I2C_HID_QUIRK_BOGUS_IRQ },
 	{ USB_VENDOR_ID_ALPS_JP, HID_ANY_ID,
 		 I2C_HID_QUIRK_RESET_ON_RESUME },
+	{ USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_LEGION_Y720,
+		I2C_HID_QUIRK_BAD_INPUT_SIZE },
 	{ 0, 0 }
 };
 
@@ -516,9 +520,15 @@ static void i2c_hid_get_input(struct i2c_hid *ihid)
 	}
 
 	if ((ret_size > size) || (ret_size < 2)) {
-		dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
-			__func__, size, ret_size);
-		return;
+		if (ihid->quirks & I2C_HID_QUIRK_BAD_INPUT_SIZE) {
+			ihid->inbuf[0] = size & 0xff;
+			ihid->inbuf[1] = size >> 8;
+			ret_size = size;
+		} else {
+			dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
+				__func__, size, ret_size);
+			return;
+		}
 	}
 
 	i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf);
-- 
2.20.1

[PATCH AUTOSEL 4.19 11/11] drivers/hid/hid-multitouch.c: fix a possible null pointer access.

[Sasha Levin]

From: Pan Zhang <zhangpan26@huawei.com>

[ Upstream commit 306d5acbfc66e7cccb4d8f91fc857206b8df80d1 ]

1002     if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
1003         struct input_mt_slot *i_slot = &mt->slots[slotnum];
1004
1005         if (input_mt_is_active(i_slot) &&
1006             input_mt_is_used(mt, i_slot))
1007             return -EAGAIN;
1008     }

We previously assumed 'mt' could be null (see line 1002).

The following situation is similar, so add a judgement.

Signed-off-by: Pan Zhang <zhangpan26@huawei.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-multitouch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index f9167d0e095ce..4a1e13ec7e7f0 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1007,7 +1007,7 @@ static int mt_process_slot(struct mt_device *td, struct input_dev *input,
 		tool = MT_TOOL_DIAL;
 	else if (unlikely(!confidence_state)) {
 		tool = MT_TOOL_PALM;
-		if (!active &&
+		if (!active && mt &&
 		    input_mt_is_active(&mt->slots[slotnum])) {
 			/*
 			 * The non-confidence was reported for
-- 
2.20.1