From 277b9a78d41e731a91d1dd9e326a15bcd338c7d6 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" <rjw@sisk.pl> Date: Fri, 7 Jan 2011 01:45:58 +0100 Subject: [PATCH] ACPI / PM: Make suspend_nvs_save() use acpi_os_map_memory() It turns out that the NVS memory region that suspend_nvs_save() attempts to map has been already mapped by acpi_os_map_memory(), so suspend_nvs_save() should better use acpi_os_map_memory() for mapping memory to avoid conflicts. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com> --- drivers/acpi/nvs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/nvs.c b/drivers/acpi/nvs.c index 7d648092427e3..54b6ab8040a6e 100644 --- a/drivers/acpi/nvs.c +++ b/drivers/acpi/nvs.c @@ -12,6 +12,7 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <acpi/acpiosxf.h> /* * Platforms, like ACPI, may want us to save some memory used by them during @@ -79,7 +80,7 @@ void suspend_nvs_free(void) free_page((unsigned long)entry->data); entry->data = NULL; if (entry->kaddr) { - iounmap(entry->kaddr); + acpi_os_unmap_memory(entry->kaddr, entry->size); entry->kaddr = NULL; } } @@ -113,7 +114,8 @@ int suspend_nvs_save(void) list_for_each_entry(entry, &nvs_list, node) if (entry->data) { - entry->kaddr = ioremap(entry->phys_start, entry->size); + entry->kaddr = acpi_os_map_memory(entry->phys_start, + entry->size); if (!entry->kaddr) { suspend_nvs_free(); return -ENOMEM; -- 2.39.5