From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id B4D0D2C0084 for ; Thu, 29 Aug 2013 16:55:15 +1000 (EST) Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.13.8) with ESMTP id r7T6t7pL011068 for ; Thu, 29 Aug 2013 01:55:09 -0500 Message-ID: <1377759307.4028.23.camel@pasglop> Subject: [PATCH] powerpc: Enable /dev/port when isa_io_special is set From: Benjamin Herrenschmidt To: linuxppc-dev Date: Thu, 29 Aug 2013 16:55:07 +1000 Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , isa_io_special is set when the platform provides a "special" implementation of inX/outX via some FW interface for example. Such a platform doesn't need an ISA bridge on PCI, and so /dev/port should be made available even if one isn't present. This makes the LPC bus IOs accessible via /dev/port on PowerNV Power8 Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index 5a64757..edcc209 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -21,7 +21,7 @@ extern struct pci_dev *isa_bridge_pcidev; /* * has legacy ISA devices ? */ -#define arch_has_dev_port() (isa_bridge_pcidev != NULL) +#define arch_has_dev_port() (isa_bridge_pcidev != NULL || isa_io_special) #endif #include