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| author | Sinan Kaya <okaya@kernel.org> | 2018-12-19 22:46:58 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-20 10:19:49 +0100 |
| commit | 43554cebba50e709b9207c55ceca6bc281748586 (patch) | |
| tree | 6e34a98bf6e2c869210da4444c3b6f1cbd5bceb9 /drivers/acpi | |
| parent | 52146173a0333a8c9fbc1a3dd92958f376511b38 (diff) | |
| download | linux-43554cebba50e709b9207c55ceca6bc281748586.tar.bz2 | |
ACPI/IORT: Stub out ACS functions when CONFIG_PCI is not set
Remove PCI dependent code out of iort.c when CONFIG_PCI is not defined.
A quick search reveals the following functions:
1. pci_request_acs()
2. pci_domain_nr()
3. pci_is_root_bus()
4. to_pci_dev()
Both pci_domain_nr() and pci_is_root_bus() are defined in linux/pci.h.
pci_domain_nr() is a stub function when CONFIG_PCI is not set and
pci_is_root_bus() just returns a reference to a structure member which
is still valid without CONFIG_PCI set.
to_pci_dev() is a macro that expands to container_of.
pci_request_acs() is the only code that gets pulled in from drivers/pci/*.c
Signed-off-by: Sinan Kaya <okaya@kernel.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 70f4e80b9246..2159ad9bf9ed 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1435,8 +1435,14 @@ dev_put: return ret; } -static bool __init iort_enable_acs(struct acpi_iort_node *iort_node) +#ifdef CONFIG_PCI +static void __init iort_enable_acs(struct acpi_iort_node *iort_node) { + static bool acs_enabled __initdata; + + if (acs_enabled) + return; + if (iort_node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) { struct acpi_iort_node *parent; struct acpi_iort_id_mapping *map; @@ -1458,13 +1464,15 @@ static bool __init iort_enable_acs(struct acpi_iort_node *iort_node) if ((parent->type == ACPI_IORT_NODE_SMMU) || (parent->type == ACPI_IORT_NODE_SMMU_V3)) { pci_request_acs(); - return true; + acs_enabled = true; + return; } } } - - return false; } +#else +static inline void iort_enable_acs(struct acpi_iort_node *iort_node) { } +#endif static void __init iort_init_platform_devices(void) { @@ -1472,7 +1480,6 @@ static void __init iort_init_platform_devices(void) struct acpi_table_iort *iort; struct fwnode_handle *fwnode; int i, ret; - bool acs_enabled = false; const struct iort_dev_config *ops; /* @@ -1493,8 +1500,7 @@ static void __init iort_init_platform_devices(void) return; } - if (!acs_enabled) - acs_enabled = iort_enable_acs(iort_node); + iort_enable_acs(iort_node); ops = iort_get_dev_cfg(iort_node); if (ops) { |