Lv Zheng a238317ce8 ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem. ... ACPICA doesn't include protections around address space checking, Linux build tests always complain increased sparse warnings around ACPICA internal acpi_os_map/unmap_memory() invocations. This patch tries to fix this issue permanently. There are 2 choices left for us to solve this issue: 1. Add __iomem address space awareness into ACPICA. 2. Remove sparse checker of __iomem from ACPICA source code. This patch chooses solution 2, because: 1. Most of the acpi_os_map/unmap_memory() invocations are used for ACPICA. table mappings, which in fact are not IO addresses. 2. The only IO addresses usage is for "system memory space" mapping code in: drivers/acpi/acpica/exregion.c drivers/acpi/acpica/evrgnini.c drivers/acpi/acpica/exregion.c The mapped address is accessed in the handler of "system memory space" - acpi_ex_system_memory_space_handler(). This function in fact can be changed to invoke acpi_os_read/write_memory() so that __iomem can always be type-casted in the OSL layer. According to the above investigation, we drew the following conclusion: It is not a good idea to introduce __iomem address space awareness into ACPICA mostly in order to protect non-IO addresses. We can simply remove __iomem for acpi_os_map/unmap_memory() to remove __iomem checker for ACPICA code. Then we need to enforce external usages to invoke other APIs that are aware of __iomem address space. The external usages are: drivers/acpi/apei/einj.c drivers/acpi/acpi_extlog.c drivers/char/tpm/tpm_acpi.c drivers/acpi/nvs.c This patch thus performs cleanups in this way: 1. Add acpi_os_map/unmap_iomem() to be invoked by non-ACPICA code. 2. Remove __iomem from acpi_os_map/unmap_memory(). Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2014-05-27 18:13:08 +02:00
..
Kconfig	Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP	2014-04-07 16:36:11 -07:00
Makefile	tpm: Move sysfs functions from tpm-interface to tpm-sysfs	2014-01-06 14:37:24 +01:00
tpm-dev.c	tpm: Make tpm-dev allocate a per-file structure	2014-01-06 14:37:25 +01:00
tpm-interface.c	tpm: Use the ops structure instead of a copy in tpm_vendor_specific	2014-01-06 14:37:25 +01:00
tpm-sysfs.c	tpm/tpm-sysfs: active_show() can be static	2014-01-06 14:37:25 +01:00
tpm.h	tpm: Make tpm-dev allocate a per-file structure	2014-01-06 14:37:25 +01:00
tpm_acpi.c	ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.	2014-05-27 18:13:08 +02:00
tpm_atmel.c	tpm: Create a tpm_class_ops structure and use it in the drivers	2014-01-06 14:37:25 +01:00
tpm_atmel.h
tpm_eventlog.c	tpm: Merge the tpm-bios module with tpm.o	2013-10-22 19:43:01 +02:00
tpm_eventlog.h
tpm_i2c_atmel.c	tpm: Create a tpm_class_ops structure and use it in the drivers	2014-01-06 14:37:25 +01:00
tpm_i2c_infineon.c	drivers/char: delete non-required instances of include <linux/init.h>	2014-02-07 15:10:19 -08:00
tpm_i2c_nuvoton.c	tpm: Create a tpm_class_ops structure and use it in the drivers	2014-01-06 14:37:25 +01:00
tpm_i2c_stm_st33.c	drivers/char: delete non-required instances of include <linux/init.h>	2014-02-07 15:10:19 -08:00
tpm_i2c_stm_st33.h	tpm_i2c_stm_st33: fix oops when i2c client is unavailable	2013-02-05 09:38:24 -06:00
tpm_ibmvtpm.c	tpm: Create a tpm_class_ops structure and use it in the drivers	2014-01-06 14:37:25 +01:00
tpm_ibmvtpm.h	drivers/char/tpm: remove tasklet and cleanup	2012-11-01 15:23:14 -05:00
tpm_infineon.c	tpm: Create a tpm_class_ops structure and use it in the drivers	2014-01-06 14:37:25 +01:00
tpm_nsc.c	tpm: Create a tpm_class_ops structure and use it in the drivers	2014-01-06 14:37:25 +01:00
tpm_of.c
tpm_ppi.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2014-01-21 09:06:02 -08:00
tpm_tis.c	tpm: tpm_tis: Fix compile problems with CONFIG_PM_SLEEP/CONFIG_PNP	2014-01-06 14:37:25 +01:00
xen-tpmfront.c	Features:	2014-01-22 22:00:18 -08:00