media: gpio-ir-tx: fix transmit with long spaces on Orange Pi PC

[platform/kernel/linux-starfive.git] / kernel / stackleak.c

diff --git a/kernel/stackleak.c b/kernel/stackleak.c
index ce161a8..66b8af3 100644 (file)
--- a/kernel/stackleak.c
+++ b/kernel/stackleak.c
@@ -16,11 +16,13 @@
 #ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
 #include <linux/jump_label.h>
 #include <linux/sysctl.h>
+#include <linux/init.h>
 
 static DEFINE_STATIC_KEY_FALSE(stack_erasing_bypass);
 
-int stack_erasing_sysctl(struct ctl_table *table, int write,
-                       void *buffer, size_t *lenp, loff_t *ppos)
+#ifdef CONFIG_SYSCTL
+static int stack_erasing_sysctl(struct ctl_table *table, int write,
+                       void __user *buffer, size_t *lenp, loff_t *ppos)
 {
        int ret = 0;
        int state = !static_branch_unlikely(&stack_erasing_bypass);
@@ -42,6 +44,26 @@ int stack_erasing_sysctl(struct ctl_table *table, int write,
                                        state ? "enabled" : "disabled");
        return ret;
 }
+static struct ctl_table stackleak_sysctls[] = {
+       {
+               .procname       = "stack_erasing",
+               .data           = NULL,
+               .maxlen         = sizeof(int),
+               .mode           = 0600,
+               .proc_handler   = stack_erasing_sysctl,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_ONE,
+       },
+       {}
+};
+
+static int __init stackleak_sysctls_init(void)
+{
+       register_sysctl_init("kernel", stackleak_sysctls);
+       return 0;
+}
+late_initcall(stackleak_sysctls_init);
+#endif /* CONFIG_SYSCTL */
 
 #define skip_erasing() static_branch_unlikely(&stack_erasing_bypass)
 #else