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authorLv Zheng <lv.zheng@intel.com>2016-12-14 15:04:39 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-12-21 02:36:38 +0100
commit6b11d1d677132816252004426ef220ccd3c92d2f (patch)
treea512975fe6a4602264de5cbccd8926d0c121a0e6
parent66360faa4333babc53836c7b59a0cff68cb0a9c6 (diff)
downloadlinux-6b11d1d677132816252004426ef220ccd3c92d2f.tar.bz2
ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users
This patch removes the users of the deprectated APIs: acpi_get_table_with_size() early_acpi_os_unmap_memory() The following APIs should be used instead of: acpi_get_table() acpi_put_table() The deprecated APIs are invented to be a replacement of acpi_get_table() during the early stage so that the early mapped pointer will not be stored in ACPICA core and thus the late stage acpi_get_table() won't return a wrong pointer. The mapping size is returned just because it is required by early_acpi_os_unmap_memory() to unmap the pointer during early stage. But as the mapping size equals to the acpi_table_header.length (see acpi_tb_init_table_descriptor() and acpi_tb_validate_table()), when such a convenient result is returned, driver code will start to use it instead of accessing acpi_table_header to obtain the length. Thus this patch cleans up the drivers by replacing returned table size with acpi_table_header.length, and should be a no-op. Reported-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--arch/arm64/kernel/acpi.c7
-rw-r--r--drivers/acpi/nfit/core.c3
-rw-r--r--drivers/acpi/processor_core.c8
-rw-r--r--drivers/acpi/spcr.c8
-rw-r--r--drivers/acpi/tables.c17
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c3
-rw-r--r--drivers/gpu/drm/radeon/radeon_bios.c3
-rw-r--r--drivers/iommu/amd_iommu_init.c10
-rw-r--r--drivers/iommu/dmar.c7
-rw-r--r--drivers/mailbox/pcc.c5
10 files changed, 29 insertions, 42 deletions
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index 252a6d9c1da5..64d9cbd61678 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -132,14 +132,13 @@ static int __init acpi_fadt_sanity_check(void)
struct acpi_table_header *table;
struct acpi_table_fadt *fadt;
acpi_status status;
- acpi_size tbl_size;
int ret = 0;
/*
* FADT is required on arm64; retrieve it to check its presence
* and carry out revision and ACPI HW reduced compliancy tests
*/
- status = acpi_get_table_with_size(ACPI_SIG_FADT, 0, &table, &tbl_size);
+ status = acpi_get_table(ACPI_SIG_FADT, 0, &table);
if (ACPI_FAILURE(status)) {
const char *msg = acpi_format_exception(status);
@@ -170,10 +169,10 @@ static int __init acpi_fadt_sanity_check(void)
out:
/*
- * acpi_get_table_with_size() creates FADT table mapping that
+ * acpi_get_table() creates FADT table mapping that
* should be released after parsing and before resuming boot
*/
- early_acpi_os_unmap_memory(table, tbl_size);
+ acpi_put_table(table);
return ret;
}
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 71a7d07c28c9..0efd3fa9a4d8 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -2781,12 +2781,13 @@ static int acpi_nfit_add(struct acpi_device *adev)
acpi_size sz;
int rc = 0;
- status = acpi_get_table_with_size(ACPI_SIG_NFIT, 0, &tbl, &sz);
+ status = acpi_get_table(ACPI_SIG_NFIT, 0, &tbl);
if (ACPI_FAILURE(status)) {
/* This is ok, we could have an nvdimm hotplugged later */
dev_dbg(dev, "failed to find NFIT at startup\n");
return 0;
}
+ sz = tbl->length;
acpi_desc = devm_kzalloc(dev, sizeof(*acpi_desc), GFP_KERNEL);
if (!acpi_desc)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 5c78ee1860b0..611a5585a902 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -154,18 +154,16 @@ static phys_cpuid_t map_madt_entry(struct acpi_table_madt *madt,
phys_cpuid_t __init acpi_map_madt_entry(u32 acpi_id)
{
struct acpi_table_madt *madt = NULL;
- acpi_size tbl_size;
phys_cpuid_t rv;
- acpi_get_table_with_size(ACPI_SIG_MADT, 0,
- (struct acpi_table_header **)&madt,
- &tbl_size);
+ acpi_get_table(ACPI_SIG_MADT, 0,
+ (struct acpi_table_header **)&madt);
if (!madt)
return PHYS_CPUID_INVALID;
rv = map_madt_entry(madt, 1, acpi_id, true);
- early_acpi_os_unmap_memory(madt, tbl_size);
+ acpi_put_table((struct acpi_table_header *)madt);
return rv;
}
diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index e8d7bc7d4da8..b8019c4c1d38 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -33,7 +33,6 @@ int __init parse_spcr(bool earlycon)
{
static char opts[64];
struct acpi_table_spcr *table;
- acpi_size table_size;
acpi_status status;
char *uart;
char *iotype;
@@ -43,9 +42,8 @@ int __init parse_spcr(bool earlycon)
if (acpi_disabled)
return -ENODEV;
- status = acpi_get_table_with_size(ACPI_SIG_SPCR, 0,
- (struct acpi_table_header **)&table,
- &table_size);
+ status = acpi_get_table(ACPI_SIG_SPCR, 0,
+ (struct acpi_table_header **)&table);
if (ACPI_FAILURE(status))
return -ENOENT;
@@ -106,6 +104,6 @@ int __init parse_spcr(bool earlycon)
err = add_preferred_console(uart, 0, opts + strlen(uart) + 1);
done:
- early_acpi_os_unmap_memory((void __iomem *)table, table_size);
+ acpi_put_table((struct acpi_table_header *)table);
return err;
}
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index cdd56c4657e0..2604189d6cd1 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -333,7 +333,6 @@ acpi_table_parse_entries_array(char *id,
unsigned int max_entries)
{
struct acpi_table_header *table_header = NULL;
- acpi_size tbl_size;
int count;
u32 instance = 0;
@@ -346,7 +345,7 @@ acpi_table_parse_entries_array(char *id,
if (!strncmp(id, ACPI_SIG_MADT, 4))
instance = acpi_apic_instance;
- acpi_get_table_with_size(id, instance, &table_header, &tbl_size);
+ acpi_get_table(id, instance, &table_header);
if (!table_header) {
pr_warn("%4.4s not present\n", id);
return -ENODEV;
@@ -355,7 +354,7 @@ acpi_table_parse_entries_array(char *id,
count = acpi_parse_entries_array(id, table_size, table_header,
proc, proc_num, max_entries);
- early_acpi_os_unmap_memory((char *)table_header, tbl_size);
+ acpi_put_table(table_header);
return count;
}
@@ -397,7 +396,6 @@ acpi_table_parse_madt(enum acpi_madt_type id,
int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
{
struct acpi_table_header *table = NULL;
- acpi_size tbl_size;
if (acpi_disabled)
return -ENODEV;
@@ -406,13 +404,13 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
return -EINVAL;
if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
- acpi_get_table_with_size(id, acpi_apic_instance, &table, &tbl_size);
+ acpi_get_table(id, acpi_apic_instance, &table);
else
- acpi_get_table_with_size(id, 0, &table, &tbl_size);
+ acpi_get_table(id, 0, &table);
if (table) {
handler(table);
- early_acpi_os_unmap_memory(table, tbl_size);
+ acpi_put_table(table);
return 0;
} else
return -ENODEV;
@@ -426,16 +424,15 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
static void __init check_multiple_madt(void)
{
struct acpi_table_header *table = NULL;
- acpi_size tbl_size;
- acpi_get_table_with_size(ACPI_SIG_MADT, 2, &table, &tbl_size);
+ acpi_get_table(ACPI_SIG_MADT, 2, &table);
if (table) {
pr_warn("BIOS bug: multiple APIC/MADT found, using %d\n",
acpi_apic_instance);
pr_warn("If \"acpi_apic_instance=%d\" works better, "
"notify linux-acpi@vger.kernel.org\n",
acpi_apic_instance ? 0 : 2);
- early_acpi_os_unmap_memory(table, tbl_size);
+ acpi_put_table(table);
} else
acpi_apic_instance = 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index 2b6afe123f3d..df6bf7379c7c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -300,8 +300,9 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
GOP_VBIOS_CONTENT *vbios;
VFCT_IMAGE_HEADER *vhdr;
- if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))
+ if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
return false;
+ tbl_size = hdr->length;
if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
goto out_unmap;
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 21b6732425c5..c829cfb02fc4 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -603,8 +603,9 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
GOP_VBIOS_CONTENT *vbios;
VFCT_IMAGE_HEADER *vhdr;
- if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))
+ if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
return false;
+ tbl_size = hdr->length;
if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
goto out_unmap;
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 157e93421fb8..eea3d490e117 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -2207,14 +2207,13 @@ static void __init free_dma_resources(void)
static int __init early_amd_iommu_init(void)
{
struct acpi_table_header *ivrs_base;
- acpi_size ivrs_size;
acpi_status status;
int i, remap_cache_sz, ret = 0;
if (!amd_iommu_detected)
return -ENODEV;
- status = acpi_get_table_with_size("IVRS", 0, &ivrs_base, &ivrs_size);
+ status = acpi_get_table("IVRS", 0, &ivrs_base);
if (status == AE_NOT_FOUND)
return -ENODEV;
else if (ACPI_FAILURE(status)) {
@@ -2334,7 +2333,7 @@ static int __init early_amd_iommu_init(void)
out:
/* Don't leak any ACPI memory */
- early_acpi_os_unmap_memory((char __iomem *)ivrs_base, ivrs_size);
+ acpi_put_table(ivrs_base);
ivrs_base = NULL;
return ret;
@@ -2358,10 +2357,9 @@ out:
static bool detect_ivrs(void)
{
struct acpi_table_header *ivrs_base;
- acpi_size ivrs_size;
acpi_status status;
- status = acpi_get_table_with_size("IVRS", 0, &ivrs_base, &ivrs_size);
+ status = acpi_get_table("IVRS", 0, &ivrs_base);
if (status == AE_NOT_FOUND)
return false;
else if (ACPI_FAILURE(status)) {
@@ -2370,7 +2368,7 @@ static bool detect_ivrs(void)
return false;
}
- early_acpi_os_unmap_memory((char __iomem *)ivrs_base, ivrs_size);
+ acpi_put_table(ivrs_base);
/* Make sure ACS will be enabled during PCI probe */
pci_request_acs();
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 58470f5ced04..be74545a416a 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -68,7 +68,6 @@ DECLARE_RWSEM(dmar_global_lock);
LIST_HEAD(dmar_drhd_units);
struct acpi_table_header * __initdata dmar_tbl;
-static acpi_size dmar_tbl_size;
static int dmar_dev_scope_status = 1;
static unsigned long dmar_seq_ids[BITS_TO_LONGS(DMAR_UNITS_SUPPORTED)];
@@ -541,9 +540,7 @@ static int __init dmar_table_detect(void)
acpi_status status = AE_OK;
/* if we could find DMAR table, then there are DMAR devices */
- status = acpi_get_table_with_size(ACPI_SIG_DMAR, 0,
- (struct acpi_table_header **)&dmar_tbl,
- &dmar_tbl_size);
+ status = acpi_get_table(ACPI_SIG_DMAR, 0, &dmar_tbl);
if (ACPI_SUCCESS(status) && !dmar_tbl) {
pr_warn("Unable to map DMAR\n");
@@ -904,7 +901,7 @@ int __init detect_intel_iommu(void)
x86_init.iommu.iommu_init = intel_iommu_init;
#endif
- early_acpi_os_unmap_memory((void __iomem *)dmar_tbl, dmar_tbl_size);
+ acpi_put_table(dmar_tbl);
dmar_tbl = NULL;
up_write(&dmar_global_lock);
diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 08c87fadca8c..0661987fdc1a 100644
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -446,7 +446,6 @@ static int pcc_parse_subspace_irq(int id,
*/
static int __init acpi_pcc_probe(void)
{
- acpi_size pcct_tbl_header_size;
struct acpi_table_header *pcct_tbl;
struct acpi_subtable_header *pcct_entry;
struct acpi_table_pcct *acpi_pcct_tbl;
@@ -455,9 +454,7 @@ static int __init acpi_pcc_probe(void)
acpi_status status = AE_OK;
/* Search for PCCT */
- status = acpi_get_table_with_size(ACPI_SIG_PCCT, 0,
- &pcct_tbl,
- &pcct_tbl_header_size);
+ status = acpi_get_table(ACPI_SIG_PCCT, 0, &pcct_tbl);
if (ACPI_FAILURE(status) || !pcct_tbl) {
pr_warn("PCCT header not found.\n");