19 files changed, 496 insertions, 52 deletions

diff --git a/Documentation/devicetree/bindings/edac/amazon,al-mc-edac.yaml b/Documentation/devicetree/bindings/edac/amazon,al-mc-edac.yaml
new file mode 100644
index 000000000000..a25387df0865
--- /dev/null
+++ b/Documentation/devicetree/bindings/edac/amazon,al-mc-edac.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/edac/amazon,al-mc-edac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amazon's Annapurna Labs Memory Controller EDAC
+
+maintainers:
+  - Talel Shenhar <talel@amazon.com>
+  - Talel Shenhar <talelshenhar@gmail.com>
+
+description: |
+  EDAC node is defined to describe on-chip error detection and correction for
+  Amazon's Annapurna Labs Memory Controller.
+
+properties:
+
+  compatible:
+    const: amazon,al-mc-edac
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 2
+
+  interrupts:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description: uncorrectable error interrupt
+      - description: correctable error interrupt
+
+  interrupt-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: ue
+      - const: ce
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        edac@f0080000 {
+          #address-cells = <2>;
+          #size-cells = <2>;
+          compatible = "amazon,al-mc-edac";
+          reg = <0x0 0xf0080000 0x0 0x00010000>;
+          interrupt-parent = <&amazon_al_system_fabric>;
+          interrupt-names = "ue";
+          interrupts = <20 IRQ_TYPE_LEVEL_HIGH>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index d61d45daa31b..5edaa33a0e98 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -802,6 +802,13 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/interrupt-controller/amazon,al-fic.txt
 F:	drivers/irqchip/irq-al-fic.c
 
+AMAZON ANNAPURNA LABS MEMORY CONTROLLER EDAC
+M:	Talel Shenhar <talel@amazon.com>
+M:	Talel Shenhar <talelshenhar@gmail.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/edac/amazon,al-mc-edac.yaml
+F:	drivers/edac/al_mc_edac.c
+
 AMAZON ANNAPURNA LABS THERMAL MMIO DRIVER
 M:	Talel Shenhar <talel@amazon.com>
 S:	Maintained
@@ -2509,7 +2516,7 @@ S:	Maintained
 F:	drivers/clk/socfpga/
 
 ARM/SOCFPGA EDAC SUPPORT
-M:	Thor Thayer <thor.thayer@linux.intel.com>
+M:	Dinh Nguyen <dinguyen@kernel.org>
 S:	Maintained
 F:	drivers/edac/altera_edac.
 
@@ -6184,7 +6191,7 @@ S:	Supported
 F:	drivers/edac/bluefield_edac.c
 
 EDAC-CALXEDA
-M:	Robert Richter <rric@kernel.org>
+M:	Andre Przywara <andre.przywara@arm.com>
 L:	linux-edac@vger.kernel.org
 S:	Maintained
 F:	drivers/edac/highbank*
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index 7b6ec3014ba2..7a47680d6f07 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -100,6 +100,13 @@ config EDAC_AMD64_ERROR_INJECTION
 	  In addition, there are two control files, inject_read and inject_write,
 	  which trigger the DRAM ECC Read and Write respectively.
 
+config EDAC_AL_MC
+	tristate "Amazon's Annapurna Lab Memory Controller"
+	depends on (ARCH_ALPINE || COMPILE_TEST)
+	help
+	  Support for error detection and correction for Amazon's Annapurna
+	  Labs Alpine chips which allow 1 bit correction and 2 bits detection.
+
 config EDAC_AMD76X
 	tristate "AMD 76x (760, 762, 768)"
 	depends on PCI && X86_32
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index 269e15118cea..3a849168780d 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_EDAC_GHES)			+= ghes_edac.o
 edac_mce_amd-y				:= mce_amd.o
 obj-$(CONFIG_EDAC_DECODE_MCE)		+= edac_mce_amd.o
 
+obj-$(CONFIG_EDAC_AL_MC)		+= al_mc_edac.o
 obj-$(CONFIG_EDAC_AMD76X)		+= amd76x_edac.o
 obj-$(CONFIG_EDAC_CPC925)		+= cpc925_edac.o
 obj-$(CONFIG_EDAC_I5000)		+= i5000_edac.o
diff --git a/drivers/edac/al_mc_edac.c b/drivers/edac/al_mc_edac.c
new file mode 100644
index 000000000000..7d4f396c27b5
--- /dev/null
+++ b/drivers/edac/al_mc_edac.c
@@ -0,0 +1,354 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ */
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/edac.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include "edac_module.h"
+
+/* Registers Offset */
+#define AL_MC_ECC_CFG		0x70
+#define AL_MC_ECC_CLEAR		0x7c
+#define AL_MC_ECC_ERR_COUNT	0x80
+#define AL_MC_ECC_CE_ADDR0	0x84
+#define AL_MC_ECC_CE_ADDR1	0x88
+#define AL_MC_ECC_UE_ADDR0	0xa4
+#define AL_MC_ECC_UE_ADDR1	0xa8
+#define AL_MC_ECC_CE_SYND0	0x8c
+#define AL_MC_ECC_CE_SYND1	0x90
+#define AL_MC_ECC_CE_SYND2	0x94
+#define AL_MC_ECC_UE_SYND0	0xac
+#define AL_MC_ECC_UE_SYND1	0xb0
+#define AL_MC_ECC_UE_SYND2	0xb4
+
+/* Registers Fields */
+#define AL_MC_ECC_CFG_SCRUB_DISABLED	BIT(4)
+
+#define AL_MC_ECC_CLEAR_UE_COUNT	BIT(3)
+#define AL_MC_ECC_CLEAR_CE_COUNT	BIT(2)
+#define AL_MC_ECC_CLEAR_UE_ERR		BIT(1)
+#define AL_MC_ECC_CLEAR_CE_ERR		BIT(0)
+
+#define AL_MC_ECC_ERR_COUNT_UE		GENMASK(31, 16)
+#define AL_MC_ECC_ERR_COUNT_CE		GENMASK(15, 0)
+
+#define AL_MC_ECC_CE_ADDR0_RANK		GENMASK(25, 24)
+#define AL_MC_ECC_CE_ADDR0_ROW		GENMASK(17, 0)
+
+#define AL_MC_ECC_CE_ADDR1_BG		GENMASK(25, 24)
+#define AL_MC_ECC_CE_ADDR1_BANK		GENMASK(18, 16)
+#define AL_MC_ECC_CE_ADDR1_COLUMN	GENMASK(11, 0)
+
+#define AL_MC_ECC_UE_ADDR0_RANK		GENMASK(25, 24)
+#define AL_MC_ECC_UE_ADDR0_ROW		GENMASK(17, 0)
+
+#define AL_MC_ECC_UE_ADDR1_BG		GENMASK(25, 24)
+#define AL_MC_ECC_UE_ADDR1_BANK		GENMASK(18, 16)
+#define AL_MC_ECC_UE_ADDR1_COLUMN	GENMASK(11, 0)
+
+#define DRV_NAME "al_mc_edac"
+#define AL_MC_EDAC_MSG_MAX 256
+
+struct al_mc_edac {
+	void __iomem *mmio_base;
+	spinlock_t lock;
+	int irq_ce;
+	int irq_ue;
+};
+
+static void prepare_msg(char *message, size_t buffer_size,
+			enum hw_event_mc_err_type type,
+			u8 rank, u32 row, u8 bg, u8 bank, u16 column,
+			u32 syn0, u32 syn1, u32 syn2)
+{
+	snprintf(message, buffer_size,
+		 "%s rank=0x%x row=0x%x bg=0x%x bank=0x%x col=0x%x syn0: 0x%x syn1: 0x%x syn2: 0x%x",
+		 type == HW_EVENT_ERR_UNCORRECTED ? "UE" : "CE",
+		 rank, row, bg, bank, column, syn0, syn1, syn2);
+}
+
+static int handle_ce(struct mem_ctl_info *mci)
+{
+	u32 eccerrcnt, ecccaddr0, ecccaddr1, ecccsyn0, ecccsyn1, ecccsyn2, row;
+	struct al_mc_edac *al_mc = mci->pvt_info;
+	char msg[AL_MC_EDAC_MSG_MAX];
+	u16 ce_count, column;
+	unsigned long flags;
+	u8 rank, bg, bank;
+
+	eccerrcnt = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_ERR_COUNT);
+	ce_count = FIELD_GET(AL_MC_ECC_ERR_COUNT_CE, eccerrcnt);
+	if (!ce_count)
+		return 0;
+
+	ecccaddr0 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_CE_ADDR0);
+	ecccaddr1 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_CE_ADDR1);
+	ecccsyn0 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_CE_SYND0);
+	ecccsyn1 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_CE_SYND1);
+	ecccsyn2 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_CE_SYND2);
+
+	writel_relaxed(AL_MC_ECC_CLEAR_CE_COUNT | AL_MC_ECC_CLEAR_CE_ERR,
+		       al_mc->mmio_base + AL_MC_ECC_CLEAR);
+
+	dev_dbg(mci->pdev, "eccuaddr0=0x%08x eccuaddr1=0x%08x\n",
+		ecccaddr0, ecccaddr1);
+
+	rank = FIELD_GET(AL_MC_ECC_CE_ADDR0_RANK, ecccaddr0);
+	row = FIELD_GET(AL_MC_ECC_CE_ADDR0_ROW, ecccaddr0);
+
+	bg = FIELD_GET(AL_MC_ECC_CE_ADDR1_BG, ecccaddr1);
+	bank = FIELD_GET(AL_MC_ECC_CE_ADDR1_BANK, ecccaddr1);
+	column = FIELD_GET(AL_MC_ECC_CE_ADDR1_COLUMN, ecccaddr1);
+
+	prepare_msg(msg, sizeof(msg), HW_EVENT_ERR_CORRECTED,
+		    rank, row, bg, bank, column,
+		    ecccsyn0, ecccsyn1, ecccsyn2);
+
+	spin_lock_irqsave(&al_mc->lock, flags);
+	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
+			     ce_count, 0, 0, 0, 0, 0, -1, mci->ctl_name, msg);
+	spin_unlock_irqrestore(&al_mc->lock, flags);
+
+	return ce_count;
+}
+
+static int handle_ue(struct mem_ctl_info *mci)
+{
+	u32 eccerrcnt, eccuaddr0, eccuaddr1, eccusyn0, eccusyn1, eccusyn2, row;
+	struct al_mc_edac *al_mc = mci->pvt_info;
+	char msg[AL_MC_EDAC_MSG_MAX];
+	u16 ue_count, column;
+	unsigned long flags;
+	u8 rank, bg, bank;
+
+	eccerrcnt = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_ERR_COUNT);
+	ue_count = FIELD_GET(AL_MC_ECC_ERR_COUNT_UE, eccerrcnt);
+	if (!ue_count)
+		return 0;
+
+	eccuaddr0 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_UE_ADDR0);
+	eccuaddr1 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_UE_ADDR1);
+	eccusyn0 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_UE_SYND0);
+	eccusyn1 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_UE_SYND1);
+	eccusyn2 = readl_relaxed(al_mc->mmio_base + AL_MC_ECC_UE_SYND2);
+
+	writel_relaxed(AL_MC_ECC_CLEAR_UE_COUNT | AL_MC_ECC_CLEAR_UE_ERR,
+		       al_mc->mmio_base + AL_MC_ECC_CLEAR);
+
+	dev_dbg(mci->pdev, "eccuaddr0=0x%08x eccuaddr1=0x%08x\n",
+		eccuaddr0, eccuaddr1);
+
+	rank = FIELD_GET(AL_MC_ECC_UE_ADDR0_RANK, eccuaddr0);
+	row = FIELD_GET(AL_MC_ECC_UE_ADDR0_ROW, eccuaddr0);
+
+	bg = FIELD_GET(AL_MC_ECC_UE_ADDR1_BG, eccuaddr1);
+	bank = FIELD_GET(AL_MC_ECC_UE_ADDR1_BANK, eccuaddr1);
+	column = FIELD_GET(AL_MC_ECC_UE_ADDR1_COLUMN, eccuaddr1);
+
+	prepare_msg(msg, sizeof(msg), HW_EVENT_ERR_UNCORRECTED,
+		    rank, row, bg, bank, column,
+		    eccusyn0, eccusyn1, eccusyn2);
+
+	spin_lock_irqsave(&al_mc->lock, flags);
+	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
+			     ue_count, 0, 0, 0, 0, 0, -1, mci->ctl_name, msg);
+	spin_unlock_irqrestore(&al_mc->lock, flags);
+
+	return ue_count;
+}
+
+static void al_mc_edac_check(struct mem_ctl_info *mci)
+{
+	struct al_mc_edac *al_mc = mci->pvt_info;
+
+	if (al_mc->irq_ue <= 0)
+		handle_ue(mci);
+
+	if (al_mc->irq_ce <= 0)
+		handle_ce(mci);
+}
+
+static irqreturn_t al_mc_edac_irq_handler_ue(int irq, void *info)
+{
+	struct platform_device *pdev = info;
+	struct mem_ctl_info *mci = platform_get_drvdata(pdev);
+
+	if (handle_ue(mci))
+		return IRQ_HANDLED;
+	return IRQ_NONE;
+}
+
+static irqreturn_t al_mc_edac_irq_handler_ce(int irq, void *info)
+{
+	struct platform_device *pdev = info;
+	struct mem_ctl_info *mci = platform_get_drvdata(pdev);
+
+	if (handle_ce(mci))
+		return IRQ_HANDLED;
+	return IRQ_NONE;
+}
+
+static enum scrub_type get_scrub_mode(void __iomem *mmio_base)
+{
+	u32 ecccfg0;
+
+	ecccfg0 = readl(mmio_base + AL_MC_ECC_CFG);
+
+	if (FIELD_GET(AL_MC_ECC_CFG_SCRUB_DISABLED, ecccfg0))
+		return SCRUB_NONE;
+	else
+		return SCRUB_HW_SRC;
+}
+
+static void devm_al_mc_edac_free(void *data)
+{
+	edac_mc_free(data);
+}
+
+static void devm_al_mc_edac_del(void *data)
+{
+	edac_mc_del_mc(data);
+}
+
+static int al_mc_edac_probe(struct platform_device *pdev)
+{
+	struct edac_mc_layer layers[1];
+	struct mem_ctl_info *mci;
+	struct al_mc_edac *al_mc;
+	void __iomem *mmio_base;
+	struct dimm_info *dimm;
+	int ret;
+
+	mmio_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(mmio_base)) {
+		dev_err(&pdev->dev, "failed to ioremap memory (%ld)\n",
+			PTR_ERR(mmio_base));
+		return PTR_ERR(mmio_base);
+	}
+
+	layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
+	layers[0].size = 1;
+	layers[0].is_virt_csrow = false;
+	mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
+			    sizeof(struct al_mc_edac));
+	if (!mci)
+		return -ENOMEM;
+
+	ret = devm_add_action(&pdev->dev, devm_al_mc_edac_free, mci);
+	if (ret) {
+		edac_mc_free(mci);
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, mci);
+	al_mc = mci->pvt_info;
+
+	al_mc->mmio_base = mmio_base;
+
+	al_mc->irq_ue = of_irq_get_byname(pdev->dev.of_node, "ue");
+	if (al_mc->irq_ue <= 0)
+		dev_dbg(&pdev->dev,
+			"no IRQ defined for UE - falling back to polling\n");
+
+	al_mc->irq_ce = of_irq_get_byname(pdev->dev.of_node, "ce");
+	if (al_mc->irq_ce <= 0)
+		dev_dbg(&pdev->dev,
+			"no IRQ defined for CE - falling back to polling\n");
+
+	/*
+	 * In case both interrupts (ue/ce) are to be found, use interrupt mode.
+	 * In case none of the interrupt are foud, use polling mode.
+	 * In case only one interrupt is found, use interrupt mode for it but
+	 * keep polling mode enable for the other.
+	 */
+	if (al_mc->irq_ue <= 0 || al_mc->irq_ce <= 0) {
+		edac_op_state = EDAC_OPSTATE_POLL;
+		mci->edac_check = al_mc_edac_check;
+	} else {
+		edac_op_state = EDAC_OPSTATE_INT;
+	}
+
+	spin_lock_init(&al_mc->lock);
+
+	mci->mtype_cap = MEM_FLAG_DDR3 | MEM_FLAG_DDR4;
+	mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
+	mci->edac_cap = EDAC_FLAG_SECDED;
+	mci->mod_name = DRV_NAME;
+	mci->ctl_name = "al_mc";
+	mci->pdev = &pdev->dev;
+	mci->scrub_mode = get_scrub_mode(mmio_base);
+
+	dimm = *mci->dimms;
+	dimm->grain = 1;
+
+	ret = edac_mc_add_mc(mci);
+	if (ret < 0) {
+		dev_err(&pdev->dev,
+			"fail to add memory controller device (%d)\n",
+			ret);
+		return ret;
+	}
+
+	ret = devm_add_action(&pdev->dev, devm_al_mc_edac_del, &pdev->dev);
+	if (ret) {
+		edac_mc_del_mc(&pdev->dev);
+		return ret;
+	}
+
+	if (al_mc->irq_ue > 0) {
+		ret = devm_request_irq(&pdev->dev,
+				       al_mc->irq_ue,
+				       al_mc_edac_irq_handler_ue,
+				       IRQF_SHARED,
+				       pdev->name,
+				       pdev);
+		if (ret != 0) {
+			dev_err(&pdev->dev,
+				"failed to request UE IRQ %d (%d)\n",
+				al_mc->irq_ue, ret);
+			return ret;
+		}
+	}
+
+	if (al_mc->irq_ce > 0) {
+		ret = devm_request_irq(&pdev->dev,
+				       al_mc->irq_ce,
+				       al_mc_edac_irq_handler_ce,
+				       IRQF_SHARED,
+				       pdev->name,
+				       pdev);
+		if (ret != 0) {
+			dev_err(&pdev->dev,
+				"failed to request CE IRQ %d (%d)\n",
+				al_mc->irq_ce, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static const struct of_device_id al_mc_edac_of_match[] = {
+	{ .compatible = "amazon,al-mc-edac", },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, al_mc_edac_of_match);
+
+static struct platform_driver al_mc_edac_driver = {
+	.probe = al_mc_edac_probe,
+	.driver = {
+		.name = DRV_NAME,
+		.of_match_table = al_mc_edac_of_match,
+	},
+};
+
+module_platform_driver(al_mc_edac_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Talel Shenhar");
+MODULE_DESCRIPTION("Amazon's Annapurna Lab's Memory Controller EDAC Driver");
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index fcc08bbf6945..1362274d840b 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -3385,6 +3385,12 @@ static struct amd64_family_type *per_family_init(struct amd64_pvt *pvt)
 		break;
 
 	case 0x19:
+		if (pvt->model >= 0x20 && pvt->model <= 0x2f) {
+			fam_type = &family_types[F17_M70H_CPUS];
+			pvt->ops = &family_types[F17_M70H_CPUS].ops;
+			fam_type->ctl_name = "F19h_M20h";
+			break;
+		}
 		fam_type	= &family_types[F19_CPUS];
 		pvt->ops	= &family_types[F19_CPUS].ops;
 		family_types[F19_CPUS].ctl_name = "F19h";
diff --git a/drivers/edac/aspeed_edac.c b/drivers/edac/aspeed_edac.c
index b194658b8b5c..fde809efc520 100644
--- a/drivers/edac/aspeed_edac.c
+++ b/drivers/edac/aspeed_edac.c
@@ -209,8 +209,8 @@ static int config_irq(void *ctx, struct platform_device *pdev)
 	/* register interrupt handler */
 	irq = platform_get_irq(pdev, 0);
 	dev_dbg(&pdev->dev, "got irq %d\n", irq);
-	if (!irq)
-		return -ENODEV;
+	if (irq < 0)
+		return irq;
 
 	rc = devm_request_irq(&pdev->dev, irq, mcr_isr, IRQF_TRIGGER_HIGH,
 			      DRV_NAME, ctx);
@@ -388,23 +388,7 @@ static struct platform_driver aspeed_driver = {
 	.probe		= aspeed_probe,
 	.remove		= aspeed_remove
 };
-
-
-static int __init aspeed_init(void)
-{
-	return platform_driver_register(&aspeed_driver);
-}
-
-
-static void __exit aspeed_exit(void)
-{
-	platform_driver_unregister(&aspeed_driver);
-}
-
-
-module_init(aspeed_init);
-module_exit(aspeed_exit);
-
+module_platform_driver(aspeed_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Stefan Schaeckeler <sschaeck@cisco.com>");
diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
index de732dc2ef33..313d08018166 100644
--- a/drivers/edac/e752x_edac.c
+++ b/drivers/edac/e752x_edac.c
@@ -7,7 +7,7 @@
  * Implement support for the e7520, E7525, e7320 and i3100 memory controllers.
  *
  * Datasheets:
- *	http://www.intel.in/content/www/in/en/chipsets/e7525-memory-controller-hub-datasheet.html
+ *	https://www.intel.in/content/www/in/en/chipsets/e7525-memory-controller-hub-datasheet.html
  *	ftp://download.intel.com/design/intarch/datashts/31345803.pdf
  *
  * Written by Tom Zimmerman
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 4e6aca595133..2f9f1e74bb35 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -474,8 +474,12 @@ static ssize_t dimmdev_location_show(struct device *dev,
 				     struct device_attribute *mattr, char *data)
 {
 	struct dimm_info *dimm = to_dimm(dev);
+	ssize_t count;
 
-	return edac_dimm_info_location(dimm, data, PAGE_SIZE);
+	count = edac_dimm_info_location(dimm, data, PAGE_SIZE);
+	count += scnprintf(data + count, PAGE_SIZE - count, "\n");
+
+	return count;
 }
 
 static ssize_t dimmdev_label_show(struct device *dev,
@@ -813,15 +817,23 @@ static ssize_t mci_max_location_show(struct device *dev,
 				     char *data)
 {
 	struct mem_ctl_info *mci = to_mci(dev);
-	int i;
+	int len = PAGE_SIZE;
 	char *p = data;
+	int i, n;
 
 	for (i = 0; i < mci->n_layers; i++) {
-		p += sprintf(p, "%s %d ",
-			     edac_layer_name[mci->layers[i].type],
-			     mci->layers[i].size - 1);
+		n = scnprintf(p, len, "%s %d ",
+			      edac_layer_name[mci->layers[i].type],
+			      mci->layers[i].size - 1);
+		len -= n;
+		if (len <= 0)
+			goto out;
+
+		p += n;
 	}
 
+	p += scnprintf(p, len, "\n");
+out:
 	return p - data;
 }
 
diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
index 94d1e3165052..dbbefd2798c5 100644
--- a/drivers/edac/ghes_edac.c
+++ b/drivers/edac/ghes_edac.c
@@ -4,7 +4,7 @@
  *
  * Copyright (c) 2013 by Mauro Carvalho Chehab
  *
- * Red Hat Inc. http://www.redhat.com
+ * Red Hat Inc. https://www.redhat.com
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index 191aa7c19ded..324a46b8479b 100644
--- a/drivers/edac/i5100_edac.c
+++ b/drivers/edac/i5100_edac.c
@@ -1061,16 +1061,15 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 				    PCI_DEVICE_ID_INTEL_5100_19, 0);
 	if (!einj) {
 		ret = -ENODEV;
-		goto bail_einj;
+		goto bail_mc_free;
 	}
 
 	rc = pci_enable_device(einj);
 	if (rc < 0) {
 		ret = rc;
-		goto bail_disable_einj;
+		goto bail_einj;
 	}
 
-
 	mci->pdev = &pdev->dev;
 
 	priv = mci->pvt_info;
@@ -1136,14 +1135,14 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 bail_scrub:
 	priv->scrub_enable = 0;
 	cancel_delayed_work_sync(&(priv->i5100_scrubbing));
-	edac_mc_free(mci);
-
-bail_disable_einj:
 	pci_disable_device(einj);
 
 bail_einj:
 	pci_dev_put(einj);
 
+bail_mc_free:
+	edac_mc_free(mci);
+
 bail_disable_ch1:
 	pci_disable_device(ch1mm);
 
diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c
index f131c05ade9f..92d63eb533ae 100644
--- a/drivers/edac/i5400_edac.c
+++ b/drivers/edac/i5400_edac.c
@@ -8,7 +8,7 @@
  *	 Ben Woodard <woodard@redhat.com>
  *	 Mauro Carvalho Chehab
  *
- * Red Hat Inc. http://www.redhat.com
+ * Red Hat Inc. https://www.redhat.com
  *
  * Forked and adapted from the i5000_edac driver which was
  * written by Douglas Thompson Linux Networx <norsk5@xmission.com>
@@ -1460,7 +1460,7 @@ module_exit(i5400_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Ben Woodard <woodard@redhat.com>");
 MODULE_AUTHOR("Mauro Carvalho Chehab");
-MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
+MODULE_AUTHOR("Red Hat Inc. (https://www.redhat.com)");
 MODULE_DESCRIPTION("MC Driver for Intel I5400 memory controllers - "
 		   I5400_REVISION);
 
diff --git a/drivers/edac/i7300_edac.c b/drivers/edac/i7300_edac.c
index 2e9bbe56cde9..4f28b8c8d378 100644
--- a/drivers/edac/i7300_edac.c
+++ b/drivers/edac/i7300_edac.c
@@ -5,7 +5,7 @@
  * Copyright (c) 2010 by:
  *	 Mauro Carvalho Chehab
  *
- * Red Hat Inc. http://www.redhat.com
+ * Red Hat Inc. https://www.redhat.com
  *
  * Intel 7300 Chipset Memory Controller Hub (MCH) - Datasheet
  *	http://www.intel.com/Assets/PDF/datasheet/318082.pdf
@@ -1206,7 +1206,7 @@ module_exit(i7300_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mauro Carvalho Chehab");
-MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
+MODULE_AUTHOR("Red Hat Inc. (https://www.redhat.com)");
 MODULE_DESCRIPTION("MC Driver for Intel I7300 memory controllers - "
 		   I7300_REVISION);
 
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 2acd9f9284a2..23d25724bae4 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -9,7 +9,7 @@
  * Copyright (c) 2009-2010 by:
  *	 Mauro Carvalho Chehab
  *
- * Red Hat Inc. http://www.redhat.com
+ * Red Hat Inc. https://www.redhat.com
  *
  * Forked and adapted from the i5400_edac driver
  *
@@ -2391,7 +2391,7 @@ module_exit(i7core_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mauro Carvalho Chehab");
-MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
+MODULE_AUTHOR("Red Hat Inc. (https://www.redhat.com)");
 MODULE_DESCRIPTION("MC Driver for Intel i7 Core memory controllers - "
 		   I7CORE_REVISION);
 
diff --git a/drivers/edac/ie31200_edac.c b/drivers/edac/ie31200_edac.c
index ebe50996cc42..c47963240b65 100644
--- a/drivers/edac/ie31200_edac.c
+++ b/drivers/edac/ie31200_edac.c
@@ -9,7 +9,7 @@
  * Since the DRAM controller is on the cpu chip, we can use its PCI device
  * id to identify these processors.
  *
- * PCI DRAM controller device ids (Taken from The PCI ID Repository - http://pci-ids.ucw.cz/)
+ * PCI DRAM controller device ids (Taken from The PCI ID Repository - https://pci-ids.ucw.cz/)
  *
  * 0108: Xeon E3-1200 Processor Family DRAM Controller
  * 010c: Xeon E3-1200/2nd Generation Core Processor Family DRAM Controller
@@ -23,9 +23,9 @@
  * 3e..: 8th/9th Gen Core Processor Host Bridge/DRAM Registers
  *
  * Based on Intel specification:
- * http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e3-1200v3-vol-2-datasheet.pdf
+ * https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e3-1200v3-vol-2-datasheet.pdf
  * http://www.intel.com/content/www/us/en/processors/xeon/xeon-e3-1200-family-vol-2-datasheet.html
- * http://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-h-processor-lines-datasheet-vol-2.html
+ * https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-h-processor-lines-datasheet-vol-2.html
  * https://www.intel.com/content/www/us/en/products/docs/processors/core/8th-gen-core-family-datasheet-vol-2.html
  *
  * According to the above datasheet (p.16):
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 325aedf46ff2..4fd06a3dc6fe 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -210,6 +210,11 @@ static const char * const smca_if_mce_desc[] = {
 	"L2 BTB Multi-Match Error",
 	"L2 Cache Response Poison Error",
 	"System Read Data Error",
+	"Hardware Assertion Error",
+	"L1-TLB Multi-Hit",
+	"L2-TLB Multi-Hit",
+	"BSR Parity Error",
+	"CT MCE",
 };
 
 static const char * const smca_l2_mce_desc[] = {
@@ -228,7 +233,8 @@ static const char * const smca_de_mce_desc[] = {
 	"Fetch address FIFO parity error",
 	"Patch RAM data parity error",
 	"Patch RAM sequencer parity error",
-	"Micro-op buffer parity error"
+	"Micro-op buffer parity error",
+	"Hardware Assertion MCA Error",
 };
 
 static const char * const smca_ex_mce_desc[] = {
@@ -244,6 +250,8 @@ static const char * const smca_ex_mce_desc[] = {
 	"Scheduling queue parity error",
 	"Branch buffer queue parity error",
 	"Hardware Assertion error",
+	"Spec Map parity error",
+	"Retire Map parity error",
 };
 
 static const char * const smca_fp_mce_desc[] = {
@@ -360,6 +368,7 @@ static const char * const smca_smu2_mce_desc[] = {
 	"Instruction Tag Cache Bank A ECC or parity error",
 	"Instruction Tag Cache Bank B ECC or parity error",
 	"System Hub Read Buffer ECC or parity error",
+	"PHY RAM ECC error",
 };
 
 static const char * const smca_mp5_mce_desc[] = {
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index c5ab634cb6a4..93daa4297f2e 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -939,12 +939,9 @@ static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
 
 static enum dev_type __ibridge_get_width(u32 mtr)
 {
-	enum dev_type type;
+	enum dev_type type = DEV_UNKNOWN;
 
 	switch (mtr) {
-	case 3:
-		type = DEV_UNKNOWN;
-		break;
 	case 2:
 		type = DEV_X16;
 		break;
@@ -3552,6 +3549,6 @@ MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mauro Carvalho Chehab");
-MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
+MODULE_AUTHOR("Red Hat Inc. (https://www.redhat.com)");
 MODULE_DESCRIPTION("MC Driver for Intel Sandy Bridge and Ivy Bridge memory controllers - "
 		   SBRIDGE_REVISION);
diff --git a/drivers/edac/thunderx_edac.c b/drivers/edac/thunderx_edac.c
index 4af9744cc6d0..0eb5eb97fd74 100644
--- a/drivers/edac/thunderx_edac.c
+++ b/drivers/edac/thunderx_edac.c
@@ -454,7 +454,7 @@ DEBUGFS_STRUCT(inject_int, 0200, thunderx_lmc_inject_int_write, NULL);
 DEBUGFS_STRUCT(inject_ecc, 0200, thunderx_lmc_inject_ecc_write, NULL);
 DEBUGFS_STRUCT(int_w1c, 0400, NULL, thunderx_lmc_int_read);
 
-struct debugfs_entry *lmc_dfs_ents[] = {
+static struct debugfs_entry *lmc_dfs_ents[] = {
 	&debugfs_mask0,
 	&debugfs_mask2,
 	&debugfs_parity_test,
diff --git a/drivers/edac/ti_edac.c b/drivers/edac/ti_edac.c
index 8be3e89a510e..e7eae20f83d1 100644
--- a/drivers/edac/ti_edac.c
+++ b/drivers/edac/ti_edac.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
  *
  * Texas Instruments DDR3 ECC error correction and detection driver
  *
@@ -278,7 +278,8 @@ static int ti_edac_probe(struct platform_device *pdev)
 
 	/* add EMIF ECC error handler */
 	error_irq = platform_get_irq(pdev, 0);
-	if (!error_irq) {
+	if (error_irq < 0) {
+		ret = error_irq;
 		edac_printk(KERN_ERR, EDAC_MOD_NAME,
 			    "EMIF irq number not defined.\n");
 		goto err;