From a7e9e1339eda52c6e35602b8083359c350c656e7 Mon Sep 17 00:00:00 2001
From: Kevin Alavik <kevin@alavik.se>
Date: Fri, 16 May 2025 18:59:16 +0200
Subject: [PATCH] fix/kernel: Proper memcmp usage in acpi_init

---
 kernel/src/sys/acpi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/src/sys/acpi.c b/kernel/src/sys/acpi.c
index 047c0b9..8bf7d7d 100644
--- a/kernel/src/sys/acpi.c
+++ b/kernel/src/sys/acpi.c
@@ -18,9 +18,11 @@ void acpi_init(void)
 
     acpi_rsdp_t *rsdp = (acpi_rsdp_t *)vallocat(kvm_ctx, 1, VALLOC_RW, rsdp_response->address);
 
-    if (memcmp(rsdp->signature, "RSD PTR", 7) == 0)
+    if (memcmp(rsdp->signature, "RSD PTR", 7) != 0)
         kpanic(NULL, "Invalid RSDP signature!");
 
+    log_early("RSDP Signature: %.*s", 7, rsdp->signature);
+
     if (rsdp->revision != 0)
     {
         acpi_uses_xsdt = 1;