From bb31f9eb4abef1b7e2524a36f60e221937dc6fab Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Fri, 16 Nov 2018 15:06:56 -0600 Subject: [PATCH] sparc: prom: use property "name" directly to construct node names In preparation to remove direct accesses to the device_node.name pointer, retrieve the node name from the "name" property instead. This is slightly less optimal as we have to walk the kernel's DT property list to find the "name" property. Cc: "David S. Miller" Cc: sparclinux@vger.kernel.org Signed-off-by: Rob Herring Signed-off-by: David S. Miller --- arch/sparc/kernel/prom_32.c | 20 ++++++++++------ arch/sparc/kernel/prom_64.c | 47 +++++++++++++++++++++++-------------- 2 files changed, 42 insertions(+), 25 deletions(-) diff --git a/arch/sparc/kernel/prom_32.c b/arch/sparc/kernel/prom_32.c index daa84b2461d3..f2835cddf362 100644 --- a/arch/sparc/kernel/prom_32.c +++ b/arch/sparc/kernel/prom_32.c @@ -60,6 +60,7 @@ void * __init prom_early_alloc(unsigned long size) */ static void __init sparc32_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom_registers *regs; struct property *rprop; @@ -69,13 +70,14 @@ static void __init sparc32_path_component(struct device_node *dp, char *tmp_buf) regs = rprop->value; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, regs->which_io, regs->phys_addr); } /* "name@slot,offset" */ static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom_registers *regs; struct property *prop; @@ -85,7 +87,7 @@ static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) regs = prop->value; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, regs->which_io, regs->phys_addr); } @@ -93,6 +95,7 @@ static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) /* "name@devnum[,func]" */ static void __init pci_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom_pci_registers *regs; struct property *prop; unsigned int devfn; @@ -105,12 +108,12 @@ static void __init pci_path_component(struct device_node *dp, char *tmp_buf) devfn = (regs->phys_hi >> 8) & 0xff; if (devfn & 0x07) { sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, devfn >> 3, devfn & 0x07); } else { sprintf(tmp_buf, "%s@%x", - dp->name, + name, devfn >> 3); } } @@ -118,6 +121,7 @@ static void __init pci_path_component(struct device_node *dp, char *tmp_buf) /* "name@addrhi,addrlo" */ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom_registers *regs; struct property *prop; @@ -128,13 +132,14 @@ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) regs = prop->value; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, regs->which_io, regs->phys_addr); } /* "name:vendor:device@irq,addrlo" */ static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct amba_prom_registers *regs; unsigned int *intr, *device, *vendor, reg0; struct property *prop; @@ -168,7 +173,7 @@ static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf) device = prop->value; sprintf(tmp_buf, "%s:%d:%d@%x,%x", - dp->name, *vendor, *device, + name, *vendor, *device, *intr, reg0); } @@ -196,12 +201,13 @@ static void __init __build_path_component(struct device_node *dp, char *tmp_buf) char * __init build_path_component(struct device_node *dp) { + const char *name = of_get_property(dp, "name", NULL); char tmp_buf[64], *n; tmp_buf[0] = '\0'; __build_path_component(dp, tmp_buf); if (tmp_buf[0] == '\0') - strcpy(tmp_buf, dp->name); + strcpy(tmp_buf, name); n = prom_early_alloc(strlen(tmp_buf) + 1); strcpy(n, tmp_buf); diff --git a/arch/sparc/kernel/prom_64.c b/arch/sparc/kernel/prom_64.c index c37955d127fe..1667df573f6f 100644 --- a/arch/sparc/kernel/prom_64.c +++ b/arch/sparc/kernel/prom_64.c @@ -72,6 +72,7 @@ void * __init prom_early_alloc(unsigned long size) */ static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom64_registers *regs; struct property *rprop; u32 high_bits, low_bits, type; @@ -83,7 +84,7 @@ static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf) regs = rprop->value; if (!of_node_is_root(dp->parent)) { sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, (unsigned int) (regs->phys_addr >> 32UL), (unsigned int) (regs->phys_addr & 0xffffffffUL)); return; @@ -98,21 +99,22 @@ static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf) if (low_bits) sprintf(tmp_buf, "%s@%s%x,%x", - dp->name, prefix, + name, prefix, high_bits, low_bits); else sprintf(tmp_buf, "%s@%s%x", - dp->name, + name, prefix, high_bits); } else if (type == 12) { sprintf(tmp_buf, "%s@%x", - dp->name, high_bits); + name, high_bits); } } static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom64_registers *regs; struct property *prop; @@ -123,7 +125,7 @@ static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf) regs = prop->value; if (!of_node_is_root(dp->parent)) { sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, (unsigned int) (regs->phys_addr >> 32UL), (unsigned int) (regs->phys_addr & 0xffffffffUL)); return; @@ -139,7 +141,7 @@ static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf) mask = 0x7fffff; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, *(u32 *)prop->value, (unsigned int) (regs->phys_addr & mask)); } @@ -148,6 +150,7 @@ static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf) /* "name@slot,offset" */ static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom_registers *regs; struct property *prop; @@ -157,7 +160,7 @@ static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) regs = prop->value; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, regs->which_io, regs->phys_addr); } @@ -165,6 +168,7 @@ static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) /* "name@devnum[,func]" */ static void __init pci_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom_pci_registers *regs; struct property *prop; unsigned int devfn; @@ -177,12 +181,12 @@ static void __init pci_path_component(struct device_node *dp, char *tmp_buf) devfn = (regs->phys_hi >> 8) & 0xff; if (devfn & 0x07) { sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, devfn >> 3, devfn & 0x07); } else { sprintf(tmp_buf, "%s@%x", - dp->name, + name, devfn >> 3); } } @@ -190,6 +194,7 @@ static void __init pci_path_component(struct device_node *dp, char *tmp_buf) /* "name@UPA_PORTID,offset" */ static void __init upa_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom64_registers *regs; struct property *prop; @@ -204,7 +209,7 @@ static void __init upa_path_component(struct device_node *dp, char *tmp_buf) return; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, *(u32 *) prop->value, (unsigned int) (regs->phys_addr & 0xffffffffUL)); } @@ -212,6 +217,7 @@ static void __init upa_path_component(struct device_node *dp, char *tmp_buf) /* "name@reg" */ static void __init vdev_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct property *prop; u32 *regs; @@ -221,12 +227,13 @@ static void __init vdev_path_component(struct device_node *dp, char *tmp_buf) regs = prop->value; - sprintf(tmp_buf, "%s@%x", dp->name, *regs); + sprintf(tmp_buf, "%s@%x", name, *regs); } /* "name@addrhi,addrlo" */ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct linux_prom64_registers *regs; struct property *prop; @@ -237,7 +244,7 @@ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) regs = prop->value; sprintf(tmp_buf, "%s@%x,%x", - dp->name, + name, (unsigned int) (regs->phys_addr >> 32UL), (unsigned int) (regs->phys_addr & 0xffffffffUL)); } @@ -245,6 +252,7 @@ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) /* "name@bus,addr" */ static void __init i2c_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct property *prop; u32 *regs; @@ -258,12 +266,13 @@ static void __init i2c_path_component(struct device_node *dp, char *tmp_buf) * property of the i2c bus node etc. etc. */ sprintf(tmp_buf, "%s@%x,%x", - dp->name, regs[0], regs[1]); + name, regs[0], regs[1]); } /* "name@reg0[,reg1]" */ static void __init usb_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct property *prop; u32 *regs; @@ -275,16 +284,17 @@ static void __init usb_path_component(struct device_node *dp, char *tmp_buf) if (prop->length == sizeof(u32) || regs[1] == 1) { sprintf(tmp_buf, "%s@%x", - dp->name, regs[0]); + name, regs[0]); } else { sprintf(tmp_buf, "%s@%x,%x", - dp->name, regs[0], regs[1]); + name, regs[0], regs[1]); } } /* "name@reg0reg1[,reg2reg3]" */ static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf) { + const char *name = of_get_property(dp, "name", NULL); struct property *prop; u32 *regs; @@ -296,10 +306,10 @@ static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf if (regs[2] || regs[3]) { sprintf(tmp_buf, "%s@%08x%08x,%04x%08x", - dp->name, regs[0], regs[1], regs[2], regs[3]); + name, regs[0], regs[1], regs[2], regs[3]); } else { sprintf(tmp_buf, "%s@%08x%08x", - dp->name, regs[0], regs[1]); + name, regs[0], regs[1]); } } @@ -356,12 +366,13 @@ static void __init __build_path_component(struct device_node *dp, char *tmp_buf) char * __init build_path_component(struct device_node *dp) { + const char *name = of_get_property(dp, "name", NULL); char tmp_buf[64], *n; tmp_buf[0] = '\0'; __build_path_component(dp, tmp_buf); if (tmp_buf[0] == '\0') - strcpy(tmp_buf, dp->name); + strcpy(tmp_buf, name); n = prom_early_alloc(strlen(tmp_buf) + 1); strcpy(n, tmp_buf); -- 2.45.2