linux-kernel - [PATCH v1 1/6] x86/boot: Convert early_serial

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Message-ID: <20250502123145.4066635-2-andriy.shevchenko@linux.intel.com>
Date: Fri,  2 May 2025 15:29:37 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Ashish Kalra <ashish.kalra@....com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	David Woodhouse <dwmw@...zon.co.uk>,
	Denis Mukhin <dmukhin@...d.com>
Subject: [PATCH v1 1/6] x86/boot: Convert early_serial_base to unsigned long

As a preparatory of adding flexible serial I/O accessors, convert
early_serial_base to unsigned long to cover all possible bus addresses
on the system.

No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 arch/x86/boot/boot.h                            | 2 +-
 arch/x86/boot/compressed/early_serial_console.c | 2 +-
 arch/x86/boot/compressed/misc.h                 | 4 ++--
 arch/x86/boot/early_serial_console.c            | 6 +++---
 arch/x86/boot/tty.c                             | 2 +-
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 38f17a1e1e36..753f429b28cb 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -274,7 +274,7 @@ int check_knl_erratum(void);
 int validate_cpu(void);
 
 /* early_serial_console.c */
-extern int early_serial_base;
+extern unsigned long early_serial_base;
 void console_init(void);
 
 /* edd.c */
diff --git a/arch/x86/boot/compressed/early_serial_console.c b/arch/x86/boot/compressed/early_serial_console.c
index 70a8d1706d0f..5b8db03f40ad 100644
--- a/arch/x86/boot/compressed/early_serial_console.c
+++ b/arch/x86/boot/compressed/early_serial_console.c
@@ -1,6 +1,6 @@
 #include "misc.h"
 
 /* This might be accessed before .bss is cleared, so use .data instead. */
-int early_serial_base __section(".data");
+unsigned long early_serial_base __section(".data");
 
 #include "../early_serial_console.c"
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h
index dd8d1a85f671..f083360c84c1 100644
--- a/arch/x86/boot/compressed/misc.h
+++ b/arch/x86/boot/compressed/misc.h
@@ -127,10 +127,10 @@ extern unsigned char _pgtable[];
 
 #ifdef CONFIG_EARLY_PRINTK
 /* early_serial_console.c */
-extern int early_serial_base;
+extern unsigned long early_serial_base;
 void console_init(void);
 #else
-static const int early_serial_base;
+static const unsigned long early_serial_base;
 static inline void console_init(void)
 { }
 #endif
diff --git a/arch/x86/boot/early_serial_console.c b/arch/x86/boot/early_serial_console.c
index 023bf1c3de8b..7a7766fa16e5 100644
--- a/arch/x86/boot/early_serial_console.c
+++ b/arch/x86/boot/early_serial_console.c
@@ -23,7 +23,7 @@
 
 #define DEFAULT_BAUD 9600
 
-static void early_serial_init(int port, int baud)
+static void early_serial_init(unsigned long port, int baud)
 {
 	unsigned char c;
 	unsigned divisor;
@@ -46,9 +46,9 @@ static void early_serial_init(int port, int baud)
 static void parse_earlyprintk(void)
 {
 	int baud = DEFAULT_BAUD;
+	unsigned long port = 0;
 	char arg[32];
 	int pos = 0;
-	int port = 0;
 
 	if (cmdline_find_option("earlyprintk", arg, sizeof(arg)) > 0) {
 		char *e;
@@ -118,7 +118,7 @@ static void parse_console_uart8250(void)
 {
 	char optstr[64], *options;
 	int baud = DEFAULT_BAUD;
-	int port = 0;
+	unsigned long port = 0;
 
 	/*
 	 * console=uart8250,io,0x3f8,115200n8
diff --git a/arch/x86/boot/tty.c b/arch/x86/boot/tty.c
index f7eb976b0a4b..e2ab8b8076ef 100644
--- a/arch/x86/boot/tty.c
+++ b/arch/x86/boot/tty.c
@@ -13,7 +13,7 @@
 
 #include "boot.h"
 
-int early_serial_base;
+unsigned long early_serial_base;
 
 #define XMTRDY          0x20
 
-- 
2.47.2