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authorOlof Johansson <olof@lixom.net>2013-07-12 10:59:39 -0700
committerOlof Johansson <olof@lixom.net>2013-07-12 10:59:39 -0700
commitf4b96f5e4ff8d86699c851c10245e102809b0331 (patch)
treef766102263bed71738431cabb4d4f6f086005cd8 /drivers/acpi/acpi_memhotplug.c
parent9d8812df35be58a5da0c44182c1e4ba2507cc6a7 (diff)
parentc24a6ae18abde53b048372b066b93b71b1b91154 (diff)
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Merge tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Omap fixes and minor defconfig updates that would be good to get in before -rc1. * tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: omap2plus_defconfig: Enable appended DTB support ARM: OMAP2+: Enable TI_EDMA in omap2plus_defconfig ARM: OMAP2+: omap2plus_defconfig: enable DRA752 thermal support by default ARM: OMAP2+: omap2plus_defconfig: enable TI bandgap driver ARM: OMAP2+: devices: remove duplicated include from devices.c ARM: OMAP3: igep0020: Set DSS pins in correct mux mode. ARM: OMAP2+: N900: enable N900-specific drivers even if device tree is enabled ARM: OMAP2+: Cocci spatch "ptr_ret.spatch" ARM: OMAP2+: Remove obsolete Makefile line ARM: OMAP5: Enable Cortex A15 errata 798181 ARM: scu: provide inline dummy functions when SCU is not present ARM: OMAP4: sleep: build OMAP4 specific functions only for OMAP4 ARM: OMAP2+: timer: initialize before using oh_name Signed-off-by: Olof Johansson <olof@lixom.net> Add/move/change conflicts in arch/arm/mach-omap2/Kconfig resolved.
Diffstat (limited to 'drivers/acpi/acpi_memhotplug.c')
-rw-r--r--drivers/acpi/acpi_memhotplug.c62
1 files changed, 51 insertions, 11 deletions
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 5e6301e94920..c711d1144044 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -28,6 +28,7 @@
*/
#include <linux/acpi.h>
+#include <linux/memory.h>
#include <linux/memory_hotplug.h>
#include "internal.h"
@@ -166,13 +167,50 @@ static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
return 0;
}
+static unsigned long acpi_meminfo_start_pfn(struct acpi_memory_info *info)
+{
+ return PFN_DOWN(info->start_addr);
+}
+
+static unsigned long acpi_meminfo_end_pfn(struct acpi_memory_info *info)
+{
+ return PFN_UP(info->start_addr + info->length-1);
+}
+
+static int acpi_bind_memblk(struct memory_block *mem, void *arg)
+{
+ return acpi_bind_one(&mem->dev, (acpi_handle)arg);
+}
+
+static int acpi_bind_memory_blocks(struct acpi_memory_info *info,
+ acpi_handle handle)
+{
+ return walk_memory_range(acpi_meminfo_start_pfn(info),
+ acpi_meminfo_end_pfn(info), (void *)handle,
+ acpi_bind_memblk);
+}
+
+static int acpi_unbind_memblk(struct memory_block *mem, void *arg)
+{
+ acpi_unbind_one(&mem->dev);
+ return 0;
+}
+
+static void acpi_unbind_memory_blocks(struct acpi_memory_info *info,
+ acpi_handle handle)
+{
+ walk_memory_range(acpi_meminfo_start_pfn(info),
+ acpi_meminfo_end_pfn(info), NULL, acpi_unbind_memblk);
+}
+
static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
{
+ acpi_handle handle = mem_device->device->handle;
int result, num_enabled = 0;
struct acpi_memory_info *info;
int node;
- node = acpi_get_node(mem_device->device->handle);
+ node = acpi_get_node(handle);
/*
* Tell the VM there is more memory here...
* Note: Assume that this function returns zero on success
@@ -203,6 +241,12 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
if (result && result != -EEXIST)
continue;
+ result = acpi_bind_memory_blocks(info, handle);
+ if (result) {
+ acpi_unbind_memory_blocks(info, handle);
+ return -ENODEV;
+ }
+
info->enabled = 1;
/*
@@ -227,12 +271,11 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
return 0;
}
-static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
+static void acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
{
- int result = 0, nid;
+ acpi_handle handle = mem_device->device->handle;
struct acpi_memory_info *info, *n;
-
- nid = acpi_get_node(mem_device->device->handle);
+ int nid = acpi_get_node(handle);
list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
if (!info->enabled)
@@ -240,15 +283,12 @@ static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
if (nid < 0)
nid = memory_add_physaddr_to_nid(info->start_addr);
- result = remove_memory(nid, info->start_addr, info->length);
- if (result)
- return result;
+ acpi_unbind_memory_blocks(info, handle);
+ remove_memory(nid, info->start_addr, info->length);
list_del(&info->list);
kfree(info);
}
-
- return result;
}
static void acpi_memory_device_free(struct acpi_memory_device *mem_device)
@@ -300,7 +340,7 @@ static int acpi_memory_device_add(struct acpi_device *device,
if (result) {
dev_err(&device->dev, "acpi_memory_enable_device() error\n");
acpi_memory_device_free(mem_device);
- return -ENODEV;
+ return result;
}
dev_dbg(&device->dev, "Memory device configured by ACPI\n");