linux-kernel - [PATCH 13/36] x86, PCI: allocate temp range array in amd_bus pci_root

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Message-Id: <1330570837-26638-14-git-send-email-yinghai@kernel.org>
Date:	Wed, 29 Feb 2012 19:00:14 -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>,
	David Miller <davem@...emloft.net>, x86 <x86@...nel.org>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Dominik Brodowski <linux@...inikbrodowski.net>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 13/36] x86, PCI: allocate temp range array in amd_bus pci_root_info probing

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 arch/x86/pci/amd_bus.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index 5f30a98..aff155d 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -30,7 +30,7 @@ static struct pci_hostbridge_probe pci_probes[] __initdata = {
 	{ 0, 0x18, PCI_VENDOR_ID_AMD, 0x1300 },
 };
 
-#define RANGE_NUM 16
+#define RANGE_NUM 128
 
 static struct pci_root_info __init *find_pci_root_info(int node, int link)
 {
@@ -64,7 +64,7 @@ static int __init early_fill_mp_bus_info(void)
 	u32 reg;
 	u64 start;
 	u64 end;
-	struct range range[RANGE_NUM];
+	struct range *range;
 	u64 val;
 	u32 address;
 	bool found;
@@ -125,7 +125,10 @@ static int __init early_fill_mp_bus_info(void)
 	reg = read_pci_config(bus, slot, 0, 0x64);
 	def_link = (reg >> 8) & 0x03;
 
-	memset(range, 0, sizeof(range));
+	range = kcalloc(RANGE_NUM, sizeof(struct range), GFP_KERNEL);
+	if (!range)
+		return -ENOMEM;
+
 	add_range(range, RANGE_NUM, 0, 0, 0xffff + 1);
 	/* io port resource */
 	for (i = 0; i < 4; i++) {
@@ -291,6 +294,8 @@ static int __init early_fill_mp_bus_info(void)
 		}
 	}
 
+	kfree(range);
+
 	print_all_pci_root_info("ht link", true);
 
 	return 0;
-- 
1.7.7

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