ACPI: acpi_os_allocate() fixes

Replace acpi_in_resume with a more general hack
to check irqs_disabled() on any kmalloc() from ACPI.
While setting (system_state != SYSTEM_RUNNING) on resume
seemed more general, Andrew Morton preferred this approach.

http://bugzilla.kernel.org/show_bug.cgi?id=3469

Make acpi_os_allocate() into an inline function to
allow /proc/slab_allocators to work.

Delete some memset() that could fault on allocation failure.

Signed-off-by: Len Brown <len.brown@intel.com>

4 files changed, 2 insertions, 39 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index eedb05c6dc7b6d..47dfde95b8f827 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -136,16 +136,6 @@ void acpi_os_vprintf(const char *fmt, va_list args)
 #endif
 }
 
-
-extern int acpi_in_resume;
-void *acpi_os_allocate(acpi_size size)
-{
-	if (acpi_in_resume)
-		return kmalloc(size, GFP_ATOMIC);
-	else
-		return kmalloc(size, GFP_KERNEL);
-}
-
 acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr)
 {
 	if (efi_enabled) {
@@ -1115,26 +1105,6 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
 	return (AE_OK);
 }
 
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_acquire_object
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *              ReturnObject    - Where the object is returned
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Return a zero-filled object.
- *
- ******************************************************************************/
-
-void *acpi_os_acquire_object(acpi_cache_t * cache)
-{
-	void *object = kmem_cache_zalloc(cache, GFP_KERNEL);
-	WARN_ON(!object);
-	return object;
-}
-
 /******************************************************************************
  *
  * FUNCTION:    acpi_os_validate_interface
diff --git a/drivers/acpi/parser/psutils.c b/drivers/acpi/parser/psutils.c
index 182474ae8ce9ed..d405387b741467 100644
--- a/drivers/acpi/parser/psutils.c
+++ b/drivers/acpi/parser/psutils.c
@@ -139,12 +139,10 @@ union acpi_parse_object *acpi_ps_alloc_op(u16 opcode)
 		/* The generic op (default) is by far the most common (16 to 1) */
 
 		op = acpi_os_acquire_object(acpi_gbl_ps_node_cache);
-		memset(op, 0, sizeof(struct acpi_parse_obj_common));
 	} else {
 		/* Extended parseop */
 
 		op = acpi_os_acquire_object(acpi_gbl_ps_node_ext_cache);
-		memset(op, 0, sizeof(struct acpi_parse_obj_named));
 	}
 
 	/* Initialize the Op */
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 8197c0e40769f6..7f3e7e77e79436 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -780,11 +780,6 @@ static int acpi_pci_link_resume(struct acpi_pci_link *link)
 		return 0;
 }
 
-/*
- * FIXME: this is a workaround to avoid nasty warning.  It will be removed
- * after every device calls pci_disable_device in .resume.
- */
-int acpi_in_resume;
 static int irqrouter_resume(struct sys_device *dev)
 {
 	struct list_head *node = NULL;
@@ -794,7 +789,6 @@ static int irqrouter_resume(struct sys_device *dev)
 	/* Make sure SCI is enabled again (Apple firmware bug?) */
 	acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK);
 
-	acpi_in_resume = 1;
 	list_for_each(node, &acpi_link.entries) {
 		link = list_entry(node, struct acpi_pci_link, node);
 		if (!link) {
@@ -803,7 +797,6 @@ static int irqrouter_resume(struct sys_device *dev)
 		}
 		acpi_pci_link_resume(link);
 	}
-	acpi_in_resume = 0;
 	return 0;
 }
 
diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c
index 5cff17dc78b331..f6cbc0b1bfd057 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/utilities/utalloc.c
@@ -285,6 +285,7 @@ acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
 	return (status);
 }
 
+#ifdef NOT_USED_BY_LINUX
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ut_allocate
@@ -360,3 +361,4 @@ void *acpi_ut_allocate_zeroed(acpi_size size,
 
 	return (allocation);
 }
+#endif