From 5cadc90e7a95f0b613004c6922639c8e4447dd61 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Mon, 22 Jun 2026 12:50:16 +0200
Subject: [PATCH] fpi-ssm: Add checks on parameters validity

---
 libfprint/fpi-ssm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libfprint/fpi-ssm.c b/libfprint/fpi-ssm.c
index fda309e8..877995a0 100644
--- a/libfprint/fpi-ssm.c
+++ b/libfprint/fpi-ssm.c
@@ -657,6 +657,8 @@ fpi_ssm_dup_error (FpiSsm *machine)
 void
 fpi_ssm_silence_debug (FpiSsm *machine)
 {
+  g_return_if_fail (machine != NULL);
+
   machine->silence = TRUE;
 }
 
@@ -676,6 +678,7 @@ void
 fpi_ssm_usb_transfer_cb (FpiUsbTransfer *transfer, FpDevice *device,
                          gpointer unused_data, GError *error)
 {
+  g_return_if_fail (transfer != NULL);
   g_return_if_fail (transfer->ssm);
 
   if (error)
@@ -705,6 +708,7 @@ fpi_ssm_usb_transfer_with_weak_pointer_cb (FpiUsbTransfer *transfer,
                                            FpDevice *device, gpointer weak_ptr,
                                            GError *error)
 {
+  g_return_if_fail (transfer != NULL);
   g_return_if_fail (transfer->ssm);
 
   if (weak_ptr)
@@ -729,6 +733,7 @@ void
 fpi_ssm_spi_transfer_cb (FpiSpiTransfer *transfer, FpDevice *device,
                          gpointer unused_data, GError *error)
 {
+  g_return_if_fail (transfer != NULL);
   g_return_if_fail (transfer->ssm);
 
   if (error)
@@ -758,6 +763,7 @@ fpi_ssm_spi_transfer_with_weak_pointer_cb (FpiSpiTransfer *transfer,
                                            FpDevice *device, gpointer weak_ptr,
                                            GError *error)
 {
+  g_return_if_fail (transfer != NULL);
   g_return_if_fail (transfer->ssm);
 
   if (weak_ptr)