linux-kernel - [PATCH] tty: serial: export serial_8250_warn_need

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Message-Id: <20241029152804.3318094-1-arnd@kernel.org>
Date: Tue, 29 Oct 2024 15:27:34 +0000
From: Arnd Bergmann <arnd@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Arnd Bergmann <arnd@...nel.org>,
	Niklas Schnelle <schnelle@...ux.ibm.com>,
	"Maciej W. Rozycki" <macro@...am.me.uk>
Cc: Arnd Bergmann <arnd@...db.de>,
	Jeff Johnson <quic_jjohnson@...cinc.com>,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Subject: [PATCH] tty: serial: export serial_8250_warn_need_ioport

From: Arnd Bergmann <arnd@...db.de>

The newly added function is used from a loadable module, so it has
to be exported the same way as the other function in this file:

ERROR: modpost: "serial_8250_warn_need_ioport" [drivers/tty/serial/8250/8250_pci.ko] undefined!

Fixes: 7c7e6c8924e7 ("tty: serial: handle HAS_IOPORT dependencies")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
The build regression is currently part of my asm-generic tree, so I've
applied this fixup on top.

 drivers/tty/serial/8250/8250_pcilib.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/8250/8250_pcilib.c b/drivers/tty/serial/8250/8250_pcilib.c
index ec4d04177802..3bdccf76f71d 100644
--- a/drivers/tty/serial/8250/8250_pcilib.c
+++ b/drivers/tty/serial/8250/8250_pcilib.c
@@ -19,6 +19,7 @@ int serial_8250_warn_need_ioport(struct pci_dev *dev)
 
 	return -ENXIO;
 }
+EXPORT_SYMBOL_NS_GPL(serial_8250_warn_need_ioport, SERIAL_8250_PCI);
 
 int serial8250_pci_setup_port(struct pci_dev *dev, struct uart_8250_port *port,
 		   u8 bar, unsigned int offset, int regshift)
-- 
2.39.5