linux-kernel - [Debug 2/2] x86/PCI/ACPI: Gather debug info

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Date:	Mon,  2 Mar 2015 17:51:38 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Thomas Voegtle <tv@...96.de>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Dave Airlie <airlied@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Lv Zheng <lv.zheng@...el.com>
Subject: [Debug 2/2] x86/PCI/ACPI: Gather debug info


Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
 drivers/acpi/resource.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 4752b9939987..43de252a75b4 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -46,10 +46,10 @@ static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io)
 	if (len && reslen && reslen == len && start <= end)
 		return true;
 
-	pr_info("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n",
+	pr_warn("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n",
 		io ? "io" : "mem", start, end, len);
 
-	return false;
+	return reslen != 0;
 }
 
 static void acpi_dev_memresource_flags(struct resource *res, u64 len,
@@ -193,13 +193,14 @@ static bool acpi_decode_space(struct resource_win *win,
 	u64 len = attr->address_length;
 	struct resource *res = &win->res;
 
+	pr_warn("acpi: address space [%llx-%llx] len %llx\n", attr->minimum, attr->maximum, attr->address_length);
 	/*
 	 * Filter out invalid descriptor according to ACPI Spec 5.0, section
 	 * 6.4.3.5 Address Space Resource Descriptors.
 	 */
 	if ((addr->min_address_fixed != addr->max_address_fixed && len) ||
 	    (addr->min_address_fixed && addr->max_address_fixed && !len))
-		pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n",
+		pr_warn("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n",
 			 addr->min_address_fixed, addr->max_address_fixed, len);
 
 	res->start = attr->minimum;
-- 
1.7.10.4

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