From a4333a43619b800ad49caa833113b2ae9cc2cc68 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel@rtems.org>
Date: Thu, 6 Nov 2025 10:22:51 -0600
Subject: [PATCH] bsps/shared/dev/serial/*.c: Correct comparisons of different
 signedness

The GCC warning -Wsign-compare flagged these instances of comparing
signed and unsigned types. A common pair was size_t and int.
---
 bsps/shared/dev/serial/mc68681.c | 6 +++---
 bsps/shared/dev/serial/ns16550.c | 2 +-
 bsps/shared/dev/serial/z85c30.c  | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/bsps/shared/dev/serial/mc68681.c b/bsps/shared/dev/serial/mc68681.c
index d578477de5..08ab3cfdfb 100644
--- a/bsps/shared/dev/serial/mc68681.c
+++ b/bsps/shared/dev/serial/mc68681.c
@@ -212,7 +212,7 @@ MC68681_STATIC void mc68681_initialize_context(
   mc68681_context  *pmc68681Context
 )
 {
-  int          port;
+  unsigned long port;
   unsigned int pMC68681;
   unsigned int pMC68681_port;
 
@@ -432,7 +432,7 @@ MC68681_STATIC rtems_isr mc68681_isr(
   rtems_vector_number vector
 )
 {
-  int     minor;
+  unsigned long minor;
 
   for(minor=0 ; minor<Console_Port_Count ; minor++) {
     if(Console_Port_Tbl[minor]->ulIntVector == vector &&
@@ -517,7 +517,7 @@ MC68681_STATIC ssize_t mc68681_write_support_polled(
   size_t      len
 )
 {
-  int nwrite = 0;
+  size_t nwrite = 0;
 
   /*
    * poll each byte in the string out of the port.
diff --git a/bsps/shared/dev/serial/ns16550.c b/bsps/shared/dev/serial/ns16550.c
index 8ecb4d36e9..d6bb53d196 100644
--- a/bsps/shared/dev/serial/ns16550.c
+++ b/bsps/shared/dev/serial/ns16550.c
@@ -850,7 +850,7 @@ ssize_t ns16550_write_support_polled(
   size_t      len
 )
 {
-  int nwrite = 0;
+  size_t nwrite = 0;
 
   /*
    * poll each byte in the string out of the port.
diff --git a/bsps/shared/dev/serial/z85c30.c b/bsps/shared/dev/serial/z85c30.c
index da26bc2d52..c7f03082e1 100644
--- a/bsps/shared/dev/serial/z85c30.c
+++ b/bsps/shared/dev/serial/z85c30.c
@@ -662,7 +662,7 @@ Z85C30_STATIC rtems_isr z85c30_isr(
   rtems_vector_number vector
 )
 {
-  int                 minor;
+  unsigned long       minor;
   uint32_t            ulCtrlPort;
   volatile uint8_t    ucIntPend;
   volatile uint8_t    ucIntPendPort;
@@ -847,7 +847,7 @@ Z85C30_STATIC ssize_t z85c30_write_support_polled(
   const char *buf,
   size_t len)
 {
-  int nwrite=0;
+  size_t nwrite=0;
 
   /*
    * poll each byte in the string out of the port.