powerpc/sysdev: Add __init attribute to eligible functions

Some files functions in 'arch/powerpc/sysdev' are deserving of an `__init`
macro attribute. These functions are only called by other initialization
functions and therefore should inherit the attribute.
Also, change function declarations in header files to include `__init`.
Signed-off-by: Nick Child <nick.child@ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211216220035.605465-6-nick.child@ibm.com

arch/powerpc/include/asm/cpm2.h

@@ -1133,8 +1133,8 @@ enum cpm_clk {
 	CPM_CLK_DUMMY
 };
 
-extern int cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode);
-extern int cpm2_smc_clk_setup(enum cpm_clk_target target, int clock);
+int __init cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode);
+int __init cpm2_smc_clk_setup(enum cpm_clk_target target, int clock);
 
 #define CPM_PIN_INPUT     0
 #define CPM_PIN_OUTPUT    1
@@ -1143,7 +1143,7 @@ extern int cpm2_smc_clk_setup(enum cpm_clk_target target, int clock);
 #define CPM_PIN_GPIO      4
 #define CPM_PIN_OPENDRAIN 8
 
-void cpm2_set_pin(int port, int pin, int flags);
+void __init cpm2_set_pin(int port, int pin, int flags);
 
 #endif /* __CPM2__ */
 #endif /* __KERNEL__ */

arch/powerpc/include/asm/i8259.h

@@ -7,7 +7,7 @@
 
 extern void i8259_init(struct device_node *node, unsigned long intack_addr);
 extern unsigned int i8259_irq(void);
-extern struct irq_domain *i8259_get_host(void);
+struct irq_domain *__init i8259_get_host(void);
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_I8259_H */

arch/powerpc/include/asm/ipic.h

@@ -65,7 +65,7 @@ enum ipic_mcp_irq {
 	IPIC_MCP_MU   = 7,
 };
 
-extern void ipic_set_default_priority(void);
+void __init ipic_set_default_priority(void);
 extern u32 ipic_get_mcp_status(void);
 extern void ipic_clear_mcp_status(u32 mask);
 

arch/powerpc/include/asm/mpic.h

@@ -472,7 +472,7 @@ extern int mpic_cpu_get_priority(void);
 extern void mpic_cpu_set_priority(int prio);
 
 /* Request IPIs on primary mpic */
-extern void mpic_request_ipis(void);
+void __init mpic_request_ipis(void);
 
 /* Send a message (IPI) to a given target (cpu number or MSG_*) */
 void smp_mpic_message_pass(int target, int msg);

arch/powerpc/include/asm/xics.h

@@ -38,13 +38,13 @@ static inline int icp_native_init(void) { return -ENODEV; }
 
 /* PAPR ICP */
 #ifdef CONFIG_PPC_ICP_HV
-extern int icp_hv_init(void);
+int __init icp_hv_init(void);
 #else
 static inline int icp_hv_init(void) { return -ENODEV; }
 #endif
 
 #ifdef CONFIG_PPC_POWERNV
-extern int icp_opal_init(void);
+int __init icp_opal_init(void);
 extern void icp_opal_flush_interrupt(void);
 #else
 static inline int icp_opal_init(void) { return -ENODEV; }

arch/powerpc/sysdev/cpm2.c

@@ -135,7 +135,7 @@ void __cpm2_setbrg(uint brg, uint rate, uint clk, int div16, int src)
 }
 EXPORT_SYMBOL(__cpm2_setbrg);
 
-int cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode)
+int __init cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode)
 {
 	int ret = 0;
 	int shift;
@@ -265,7 +265,7 @@ int cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode)
 	return ret;
 }
 
-int cpm2_smc_clk_setup(enum cpm_clk_target target, int clock)
+int __init cpm2_smc_clk_setup(enum cpm_clk_target target, int clock)
 {
 	int ret = 0;
 	int shift;
@@ -326,7 +326,7 @@ struct cpm2_ioports {
 	u32 res[3];
 };
 
-void cpm2_set_pin(int port, int pin, int flags)
+void __init cpm2_set_pin(int port, int pin, int flags)
 {
 	struct cpm2_ioports __iomem *iop =
 		(struct cpm2_ioports __iomem *)&cpm2_immr->im_ioport;

arch/powerpc/sysdev/dart_iommu.c

@@ -226,7 +226,7 @@ static void dart_free(struct iommu_table *tbl, long index, long npages)
 	dart_cache_sync(orig_dp, orig_npages);
 }
 
-static void allocate_dart(void)
+static void __init allocate_dart(void)
 {
 	unsigned long tmp;
 

arch/powerpc/sysdev/fsl_mpic_err.c

@@ -58,7 +58,7 @@ static struct irq_chip fsl_mpic_err_chip = {
 	.irq_unmask	= fsl_mpic_unmask_err,
 };
 
-int mpic_setup_error_int(struct mpic *mpic, int intvec)
+int __init mpic_setup_error_int(struct mpic *mpic, int intvec)
 {
 	int i;
 
@@ -121,7 +121,7 @@ static irqreturn_t fsl_error_int_handler(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-void mpic_err_int_init(struct mpic *mpic, irq_hw_number_t irqnum)
+void __init mpic_err_int_init(struct mpic *mpic, irq_hw_number_t irqnum)
 {
 	unsigned int virq;
 	int ret;

arch/powerpc/sysdev/fsl_pci.c

@@ -1106,7 +1106,7 @@ static const struct of_device_id pci_ids[] = {
 
 struct device_node *fsl_pci_primary;
 
-void fsl_pci_assign_primary(void)
+void __init fsl_pci_assign_primary(void)
 {
 	struct device_node *np;
 

arch/powerpc/sysdev/fsl_pci.h

@@ -120,7 +120,7 @@ u64 fsl_pci_immrbar_base(struct pci_controller *hose);
 extern struct device_node *fsl_pci_primary;
 
 #ifdef CONFIG_PCI
-void fsl_pci_assign_primary(void);
+void __init fsl_pci_assign_primary(void);
 #else
 static inline void fsl_pci_assign_primary(void) {}
 #endif

arch/powerpc/sysdev/i8259.c

@@ -208,7 +208,7 @@ static const struct irq_domain_ops i8259_host_ops = {
 	.xlate = i8259_host_xlate,
 };
 
-struct irq_domain *i8259_get_host(void)
+struct irq_domain *__init i8259_get_host(void)
 {
 	return i8259_host;
 }

arch/powerpc/sysdev/ipic.c

@@ -767,7 +767,7 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
 	return ipic;
 }
 
-void ipic_set_default_priority(void)
+void __init ipic_set_default_priority(void)
 {
 	ipic_write(primary_ipic->regs, IPIC_SIPRR_A, IPIC_PRIORITY_DEFAULT);
 	ipic_write(primary_ipic->regs, IPIC_SIPRR_B, IPIC_PRIORITY_DEFAULT);

arch/powerpc/sysdev/mpic.c

@@ -1839,7 +1839,7 @@ unsigned int mpic_get_mcirq(void)
 }
 
 #ifdef CONFIG_SMP
-void mpic_request_ipis(void)
+void __init mpic_request_ipis(void)
 {
 	struct mpic *mpic = mpic_primary;
 	int i;

arch/powerpc/sysdev/mpic.h

@@ -8,8 +8,8 @@
 
 #ifdef CONFIG_PCI_MSI
 extern void mpic_msi_reserve_hwirq(struct mpic *mpic, irq_hw_number_t hwirq);
-extern int mpic_msi_init_allocator(struct mpic *mpic);
-extern int mpic_u3msi_init(struct mpic *mpic);
+int __init mpic_msi_init_allocator(struct mpic *mpic);
+int __init mpic_u3msi_init(struct mpic *mpic);
 #else
 static inline void mpic_msi_reserve_hwirq(struct mpic *mpic,
 					  irq_hw_number_t hwirq)
@@ -37,8 +37,8 @@ extern void mpic_reset_core(int cpu);
 
 #ifdef CONFIG_FSL_SOC
 extern int mpic_map_error_int(struct mpic *mpic, unsigned int virq, irq_hw_number_t  hw);
-extern void mpic_err_int_init(struct mpic *mpic, irq_hw_number_t irqnum);
-extern int mpic_setup_error_int(struct mpic *mpic, int intvec);
+void __init mpic_err_int_init(struct mpic *mpic, irq_hw_number_t irqnum);
+int __init mpic_setup_error_int(struct mpic *mpic, int intvec);
 #else
 static inline int mpic_map_error_int(struct mpic *mpic, unsigned int virq, irq_hw_number_t  hw)
 {

arch/powerpc/sysdev/mpic_msi.c

@@ -24,7 +24,7 @@ void mpic_msi_reserve_hwirq(struct mpic *mpic, irq_hw_number_t hwirq)
 }
 
 #ifdef CONFIG_MPIC_U3_HT_IRQS
-static int mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
+static int __init mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
 {
 	irq_hw_number_t hwirq;
 	const struct irq_domain_ops *ops = mpic->irqhost->ops;
@@ -68,13 +68,13 @@ static int mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
 	return 0;
 }
 #else
-static int mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
+static int __init mpic_msi_reserve_u3_hwirqs(struct mpic *mpic)
 {
 	return -1;
 }
 #endif
 
-int mpic_msi_init_allocator(struct mpic *mpic)
+int __init mpic_msi_init_allocator(struct mpic *mpic)
 {
 	int rc;
 

arch/powerpc/sysdev/mpic_timer.c

@@ -384,7 +384,7 @@ struct mpic_timer *mpic_request_timer(irq_handler_t fn, void *dev,
 }
 EXPORT_SYMBOL(mpic_request_timer);
 
-static int timer_group_get_freq(struct device_node *np,
+static int __init timer_group_get_freq(struct device_node *np,
 			struct timer_group_priv *priv)
 {
 	u32 div;
@@ -411,7 +411,7 @@ static int timer_group_get_freq(struct device_node *np,
 	return 0;
 }
 
-static int timer_group_get_irq(struct device_node *np,
+static int __init timer_group_get_irq(struct device_node *np,
 		struct timer_group_priv *priv)
 {
 	const u32 all_timer[] = { 0, TIMERS_PER_GROUP };
@@ -459,7 +459,7 @@ static int timer_group_get_irq(struct device_node *np,
 	return 0;
 }
 
-static void timer_group_init(struct device_node *np)
+static void __init timer_group_init(struct device_node *np)
 {
 	struct timer_group_priv *priv;
 	unsigned int i = 0;

arch/powerpc/sysdev/mpic_u3msi.c

@@ -174,7 +174,7 @@ static int u3msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	return 0;
 }
 
-int mpic_u3msi_init(struct mpic *mpic)
+int __init mpic_u3msi_init(struct mpic *mpic)
 {
 	int rc;
 	struct pci_controller *phb;

arch/powerpc/sysdev/tsi108_pci.c

@@ -257,7 +257,7 @@ static void tsi108_pci_int_unmask(u_int irq)
 	mb();
 }
 
-static void init_pci_source(void)
+static void __init init_pci_source(void)
 {
 	tsi108_write_reg(TSI108_PCI_OFFSET + TSI108_PCI_IRP_CFG_CTL,
 			0x0000ff00);

arch/powerpc/sysdev/udbg_memcons.c

@@ -92,7 +92,7 @@ int memcons_getc(void)
 	return c;
 }
 
-void udbg_init_memcons(void)
+void __init udbg_init_memcons(void)
 {
 	udbg_putc = memcons_putc;
 	udbg_getc = memcons_getc;

arch/powerpc/sysdev/xics/icp-hv.c

@@ -162,7 +162,7 @@ static const struct icp_ops icp_hv_ops = {
 #endif
 };
 
-int icp_hv_init(void)
+int __init icp_hv_init(void)
 {
 	struct device_node *np;
 

arch/powerpc/sysdev/xics/icp-opal.c

@@ -184,7 +184,7 @@ static const struct icp_ops icp_opal_ops = {
 #endif
 };
 
-int icp_opal_init(void)
+int __init icp_opal_init(void)
 {
 	struct device_node *np;
 

arch/powerpc/sysdev/xics/xics-common.c

@@ -121,7 +121,7 @@ void xics_mask_unknown_vec(unsigned int vec)
 
 #ifdef CONFIG_SMP
 
-static void xics_request_ipi(void)
+static void __init xics_request_ipi(void)
 {
 	unsigned int ipi;
 

arch/powerpc/sysdev/xive/native.c

@@ -492,7 +492,7 @@ static const struct xive_ops xive_native_ops = {
 	.name			= "native",
 };
 
-static bool xive_parse_provisioning(struct device_node *np)
+static bool __init xive_parse_provisioning(struct device_node *np)
 {
 	int rc;
 
@@ -532,7 +532,7 @@ static bool xive_parse_provisioning(struct device_node *np)
 	return true;
 }
 
-static void xive_native_setup_pools(void)
+static void __init xive_native_setup_pools(void)
 {
 	/* Allocate a pool big enough */
 	pr_debug("XIVE: Allocating VP block for pool size %u\n", nr_cpu_ids);

arch/powerpc/sysdev/xive/spapr.c

@@ -44,7 +44,7 @@ struct xive_irq_bitmap {
 
 static LIST_HEAD(xive_irq_bitmaps);
 
-static int xive_irq_bitmap_add(int base, int count)
+static int __init xive_irq_bitmap_add(int base, int count)
 {
 	struct xive_irq_bitmap *xibm;
 
@@ -687,7 +687,7 @@ static const struct xive_ops xive_spapr_ops = {
 /*
  * get max priority from "/ibm,plat-res-int-priorities"
  */
-static bool xive_get_max_prio(u8 *max_prio)
+static bool __init xive_get_max_prio(u8 *max_prio)
 {
 	struct device_node *rootdn;
 	const __be32 *reg;
@@ -741,7 +741,7 @@ static bool xive_get_max_prio(u8 *max_prio)
 	return true;
 }
 
-static const u8 *get_vec5_feature(unsigned int index)
+static const u8 *__init get_vec5_feature(unsigned int index)
 {
 	unsigned long root, chosen;
 	int size;