8 files changed, 21 insertions, 30 deletions

diff --git a/arch/riscv/kernel/cacheinfo.c b/arch/riscv/kernel/cacheinfo.c
index cb35ffd8ec6b..638dee3f7e88 100644
--- a/arch/riscv/kernel/cacheinfo.c
+++ b/arch/riscv/kernel/cacheinfo.c
@@ -28,6 +28,7 @@ static int __init_cache_level(unsigned int cpu)
 {
 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
 	struct device_node *np = of_cpu_device_node_get(cpu);
+	struct device_node *prev = NULL;
 	int levels = 0, leaves = 0, level;
 
 	if (of_property_read_bool(np, "cache-size"))
@@ -39,7 +40,10 @@ static int __init_cache_level(unsigned int cpu)
 	if (leaves > 0)
 		levels = 1;
 
+	prev = np;
 	while ((np = of_find_next_cache_node(np))) {
+		of_node_put(prev);
+		prev = np;
 		if (!of_device_is_compatible(np, "cache"))
 			break;
 		if (of_property_read_u32(np, "cache-level", &level))
@@ -55,8 +59,10 @@ static int __init_cache_level(unsigned int cpu)
 		levels = level;
 	}
 
+	of_node_put(np);
 	this_cpu_ci->num_levels = levels;
 	this_cpu_ci->num_leaves = leaves;
+
 	return 0;
 }
 
@@ -65,6 +71,7 @@ static int __populate_cache_leaves(unsigned int cpu)
 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
 	struct cacheinfo *this_leaf = this_cpu_ci->info_list;
 	struct device_node *np = of_cpu_device_node_get(cpu);
+	struct device_node *prev = NULL;
 	int levels = 1, level = 1;
 
 	if (of_property_read_bool(np, "cache-size"))
@@ -74,7 +81,10 @@ static int __populate_cache_leaves(unsigned int cpu)
 	if (of_property_read_bool(np, "d-cache-size"))
 		ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
 
+	prev = np;
 	while ((np = of_find_next_cache_node(np))) {
+		of_node_put(prev);
+		prev = np;
 		if (!of_device_is_compatible(np, "cache"))
 			break;
 		if (of_property_read_u32(np, "cache-level", &level))
@@ -89,6 +99,7 @@ static int __populate_cache_leaves(unsigned int cpu)
 			ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
 		levels = level;
 	}
+	of_node_put(np);
 
 	return 0;
 }
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index b4a7d4427fbb..f8fa2c63aa89 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -158,6 +158,7 @@ static int c_show(struct seq_file *m, void *v)
 	    && strcmp(compat, "riscv"))
 		seq_printf(m, "uarch\t\t: %s\n", compat);
 	seq_puts(m, "\n");
+	of_node_put(node);
 
 	return 0;
 }
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 0339087aa652..a6e369edbbd7 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -56,8 +56,10 @@ void riscv_fill_hwcap(void)
 
 	if (of_property_read_string(node, "riscv,isa", &isa)) {
 		pr_warning("Unable to find \"riscv,isa\" devicetree entry");
+		of_node_put(node);
 		return;
 	}
+	of_node_put(node);
 
 	for (i = 0; i < strlen(isa); ++i)
 		elf_hwcap |= isa2hwcap[(unsigned char)(isa[i])];
diff --git a/arch/riscv/kernel/ftrace.c b/arch/riscv/kernel/ftrace.c
index c433f6d3dd64..a840b7d074f7 100644
--- a/arch/riscv/kernel/ftrace.c
+++ b/arch/riscv/kernel/ftrace.c
@@ -132,7 +132,6 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
 {
 	unsigned long return_hooker = (unsigned long)&return_to_handler;
 	unsigned long old;
-	int err;
 
 	if (unlikely(atomic_read(&current->tracing_graph_pause)))
 		return;
diff --git a/arch/riscv/kernel/perf_event.c b/arch/riscv/kernel/perf_event.c
index a243fae1c1db..667ee70defea 100644
--- a/arch/riscv/kernel/perf_event.c
+++ b/arch/riscv/kernel/perf_event.c
@@ -476,6 +476,7 @@ int __init init_hw_perf_events(void)
 
 		if (of_id)
 			riscv_pmu = of_id->data;
+		of_node_put(node);
 	}
 
 	perf_pmu_register(riscv_pmu->pmu, "cpu", PERF_TYPE_RAW);
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 2c290e6aaa6e..fc8006a042eb 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -35,31 +35,9 @@
 #include <asm/sections.h>
 #include <asm/pgtable.h>
 #include <asm/smp.h>
-#include <asm/sbi.h>
 #include <asm/tlbflush.h>
 #include <asm/thread_info.h>
 
-#ifdef CONFIG_EARLY_PRINTK
-static void sbi_console_write(struct console *co, const char *buf,
-			      unsigned int n)
-{
-	int i;
-
-	for (i = 0; i < n; ++i) {
-		if (buf[i] == '\n')
-			sbi_console_putchar('\r');
-		sbi_console_putchar(buf[i]);
-	}
-}
-
-struct console riscv_sbi_early_console_dev __initdata = {
-	.name	= "early",
-	.write	= sbi_console_write,
-	.flags	= CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
-	.index	= -1
-};
-#endif
-
 #ifdef CONFIG_DUMMY_CONSOLE
 struct screen_info screen_info = {
 	.orig_video_lines	= 30,
@@ -219,12 +197,6 @@ static void __init setup_bootmem(void)
 
 void __init setup_arch(char **cmdline_p)
 {
-#if defined(CONFIG_EARLY_PRINTK)
-       if (likely(early_console == NULL)) {
-               early_console = &riscv_sbi_early_console_dev;
-               register_console(early_console);
-       }
-#endif
 	*cmdline_p = boot_command_line;
 
 	parse_early_param();
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index 18cda0e8cf94..fc185ecabb0a 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -57,12 +57,15 @@ void __init setup_smp(void)
 
 	while ((dn = of_find_node_by_type(dn, "cpu"))) {
 		hart = riscv_of_processor_hartid(dn);
-		if (hart < 0)
+		if (hart < 0) {
+			of_node_put(dn);
 			continue;
+		}
 
 		if (hart == cpuid_to_hartid_map(0)) {
 			BUG_ON(found_boot_cpu);
 			found_boot_cpu = 1;
+			of_node_put(dn);
 			continue;
 		}
 
@@ -70,6 +73,7 @@ void __init setup_smp(void)
 		set_cpu_possible(cpuid, true);
 		set_cpu_present(cpuid, true);
 		cpuid++;
+		of_node_put(dn);
 	}
 
 	BUG_ON(!found_boot_cpu);
diff --git a/arch/riscv/kernel/time.c b/arch/riscv/kernel/time.c
index 1911c8f6b8a6..40470e669a35 100644
--- a/arch/riscv/kernel/time.c
+++ b/arch/riscv/kernel/time.c
@@ -26,6 +26,7 @@ void __init time_init(void)
 	cpu = of_find_node_by_path("/cpus");
 	if (!cpu || of_property_read_u32(cpu, "timebase-frequency", &prop))
 		panic(KERN_WARNING "RISC-V system with no 'timebase-frequency' in DTS\n");
+	of_node_put(cpu);
 	riscv_timebase = prop;
 
 	lpj_fine = riscv_timebase / HZ;