linux-kernel - [PATCH] serial: parisc: GSC: fix build when PCI

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Date:   Sun, 13 Feb 2022 11:39:03 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Helge Deller <deller@....de>, linux-parisc@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial@...r.kernel.org, Jiri Slaby <jirislaby@...nel.org>,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH] serial: parisc: GSC: fix build when PCI_LBA is not set

There is a build error when using a kernel .config file from
'kernel test robot' for a different build problem:

hppa64-linux-ld: drivers/tty/serial/8250/8250_gsc.o: in function `.LC3':
(.data.rel.ro+0x18): undefined reference to `iosapic_serial_irq'

when:
  CONFIG_GSC=y
  CONFIG_SERIO_GSCPS2=y
  CONFIG_SERIAL_8250_GSC=y
  CONFIG_PCI is not set
    and hence PCI_LBA is not set.
  IOSAPIC depends on PCI_LBA, so IOSAPIC is not set/enabled.

Making SERIAL_8250_GSC depend on PCI_LBA prevents the build error.

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Cc: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>
Cc: Helge Deller <deller@....de>
Cc: linux-parisc@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-serial@...r.kernel.org
Cc: Jiri Slaby <jirislaby@...nel.org>
Cc: Johan Hovold <johan@...nel.org>
---
 drivers/tty/serial/8250/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20220211.orig/drivers/tty/serial/8250/Kconfig
+++ linux-next-20220211/drivers/tty/serial/8250/Kconfig
@@ -118,7 +118,7 @@ config SERIAL_8250_CONSOLE
 
 config SERIAL_8250_GSC
 	tristate
-	depends on SERIAL_8250 && GSC
+	depends on SERIAL_8250 && GSC && PCI_LBA
 	default SERIAL_8250
 
 config SERIAL_8250_DMA