linux-kernel - [PATCH 01/15] Make %pR could handle bus resource with domain

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Date:	Wed,  1 Feb 2012 14:43:48 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Tony Luck <tony.luck@...el.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Dominik Brodowski <linux@...inikbrodowski.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 01/15] Make %pR could handle bus resource with domain

So could use %pR for busn_res with domain nr in start/end

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 lib/vsprintf.c |   28 ++++++++++++++++++++++++----
 1 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 8e75003..b34eeea 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -451,6 +451,12 @@ char *resource_string(char *buf, char *end, struct resource *res,
 		.precision = -1,
 		.flags = SPECIAL | SMALL | ZEROPAD,
 	};
+	static const struct printf_spec domain_spec = {
+		.base = 16,
+		.field_width = 4,
+		.precision = -1,
+		.flags = SMALL | ZEROPAD,
+	};
 	static const struct printf_spec bus_spec = {
 		.base = 16,
 		.field_width = 2,
@@ -507,11 +513,25 @@ char *resource_string(char *buf, char *end, struct resource *res,
 		specp = &mem_spec;
 		decode = 0;
 	}
-	p = number(p, pend, res->start, *specp);
-	if (res->start != res->end) {
-		*p++ = '-';
-		p = number(p, pend, res->end, *specp);
+
+	if (res->flags & IORESOURCE_BUS && res->end >> 8) {
+		p = number(p, pend, res->start >> 8, domain_spec);
+		*p++ = ':';
+		p = number(p, pend, res->start & 0xff, *specp);
+		if (res->start != res->end) {
+			*p++ = '-';
+			p = number(p, pend, res->end >> 8, domain_spec);
+			*p++ = ':';
+			p = number(p, pend, res->end & 0xff, *specp);
+		}
+	} else {
+		p = number(p, pend, res->start, *specp);
+		if (res->start != res->end) {
+			*p++ = '-';
+			p = number(p, pend, res->end, *specp);
+		}
 	}
+
 	if (decode) {
 		if (res->flags & IORESOURCE_MEM_64)
 			p = string(p, pend, " 64bit", str_spec);
-- 
1.7.7

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