Messages in this thread Patch in this message |  | | | Date | Wed, 11 Jan 2006 18:58:51 +0900 | | From | Yasunori Goto <> | | Subject | [Patch 2/2]Memory hotplug from ACPI container driver take 2.(allow -EEXIST.) |
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When acpi_memory_device_init() is called at boottime to register struct memory acpi_memory_device. So, acpi_bus_add() are called via acpi_driver_attach(). But it also calls ops->start() function. It is called even if the memory blocks are initialized at early boottime. In this case add_memory() return -EEXIST, and the memory blocks becomes INVALID state even if it is normal.
This is patch for it.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Index: new_feature_patch/drivers/acpi/acpi_memhotplug.c =================================================================== --- new_feature_patch.orig/drivers/acpi/acpi_memhotplug.c 2006-01-11 16:03:34.000000000 +0900 +++ new_feature_patch/drivers/acpi/acpi_memhotplug.c 2006-01-11 16:44:18.000000000 +0900 @@ -203,8 +203,19 @@ static int acpi_memory_enable_device(str */ result = add_memory(mem_device->start_addr, (mem_device->end_addr - mem_device->start_addr) + 1); - if (result) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "\nadd_memory failed\n")); + + switch(result) { + case 0: + break; + case -EEXIST: + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "\nmemory %lu-%lu has already existed\n" + mem_device->start_addr, + mem_device->end_addr)); + return 0; + default: + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "\nadd_memory failed result=%d\n", result)); mem_device->state = MEMORY_INVALID_STATE; return result; } -- Yasunori Goto
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