1 files changed, 33 insertions, 42 deletions

diff --git a/drivers/acpi/arm64/gtdt.c b/drivers/acpi/arm64/gtdt.c
index 3561553eff8b..ffc867bac2d6 100644
--- a/drivers/acpi/arm64/gtdt.c
+++ b/drivers/acpi/arm64/gtdt.c
@@ -163,7 +163,7 @@ int __init acpi_gtdt_init(struct acpi_table_header *table,
 {
 	void *platform_timer;
 	struct acpi_table_gtdt *gtdt;
-	int cnt = 0;
+	u32 cnt = 0;
 
 	gtdt = container_of(table, struct acpi_table_gtdt, header);
 	acpi_gtdt_desc.gtdt = gtdt;
@@ -188,13 +188,17 @@ int __init acpi_gtdt_init(struct acpi_table_header *table,
 		cnt++;
 
 	if (cnt != gtdt->platform_timer_count) {
+		cnt = min(cnt, gtdt->platform_timer_count);
+		pr_err(FW_BUG "limiting Platform Timer count to %d\n", cnt);
+	}
+
+	if (!cnt) {
 		acpi_gtdt_desc.platform_timer = NULL;
-		pr_err(FW_BUG "invalid timer data.\n");
-		return -EINVAL;
+		return 0;
 	}
 
 	if (platform_timer_count)
-		*platform_timer_count = gtdt->platform_timer_count;
+		*platform_timer_count = cnt;
 
 	return 0;
 }
@@ -299,40 +303,6 @@ error:
 	return -EINVAL;
 }
 
-/**
- * acpi_arch_timer_mem_init() - Get the info of all GT blocks in GTDT table.
- * @timer_mem:	The pointer to the array of struct arch_timer_mem for returning
- *		the result of parsing. The element number of this array should
- *		be platform_timer_count(the total number of platform timers).
- * @timer_count: It points to a integer variable which is used for storing the
- *		number of GT blocks we have parsed.
- *
- * Return: 0 if success, -EINVAL/-ENODEV if error.
- */
-int __init acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem,
-				    int *timer_count)
-{
-	int ret;
-	void *platform_timer;
-
-	*timer_count = 0;
-	for_each_platform_timer(platform_timer) {
-		if (is_timer_block(platform_timer)) {
-			ret = gtdt_parse_timer_block(platform_timer, timer_mem);
-			if (ret)
-				return ret;
-			timer_mem++;
-			(*timer_count)++;
-		}
-	}
-
-	if (*timer_count)
-		pr_info("found %d memory-mapped timer block(s).\n",
-			*timer_count);
-
-	return 0;
-}
-
 /*
  * Initialize a SBSA generic Watchdog platform device info from GTDT
  */
@@ -384,11 +354,11 @@ static int __init gtdt_import_sbsa_gwdt(struct acpi_gtdt_watchdog *wd,
 	return 0;
 }
 
-static int __init gtdt_sbsa_gwdt_init(void)
+static int __init gtdt_platform_timer_init(void)
 {
 	void *platform_timer;
 	struct acpi_table_header *table;
-	int ret, timer_count, gwdt_count = 0;
+	int ret, timer_count, gwdt_count = 0, mmio_timer_count = 0;
 
 	if (acpi_disabled)
 		return 0;
@@ -410,20 +380,41 @@ static int __init gtdt_sbsa_gwdt_init(void)
 		goto out_put_gtdt;
 
 	for_each_platform_timer(platform_timer) {
+		ret = 0;
+
 		if (is_non_secure_watchdog(platform_timer)) {
 			ret = gtdt_import_sbsa_gwdt(platform_timer, gwdt_count);
 			if (ret)
-				break;
+				continue;
 			gwdt_count++;
+		} else 	if (is_timer_block(platform_timer)) {
+			struct arch_timer_mem atm = {};
+			struct platform_device *pdev;
+
+			ret = gtdt_parse_timer_block(platform_timer, &atm);
+			if (ret)
+				continue;
+
+			pdev = platform_device_register_data(NULL, "gtdt-arm-mmio-timer",
+							     mmio_timer_count, &atm,
+							     sizeof(atm));
+			if (IS_ERR(pdev)) {
+				pr_err("Can't register timer %d\n", mmio_timer_count);
+				continue;
+			}
+
+			mmio_timer_count++;
 		}
 	}
 
 	if (gwdt_count)
 		pr_info("found %d SBSA generic Watchdog(s).\n", gwdt_count);
+	if (mmio_timer_count)
+		pr_info("found %d Generic MMIO timer(s).\n", mmio_timer_count);
 
 out_put_gtdt:
 	acpi_put_table(table);
 	return ret;
 }
 
-device_initcall(gtdt_sbsa_gwdt_init);
+device_initcall(gtdt_platform_timer_init);