From: "ethan.zhao" <ethan.kernel@gmail.com>
To: mrustad@gmail.com, bhelgaas@google.com, yinghai@kernel.org,
jbarnes@virtuousgeek.org
Cc: linux-kernel@vger.kernel.org, jiang.liu@huawei.com,
linux-pci@vger.kernel.org, joe.jin@oracle.com,
"ethan.zhao" <ethan.kernel@gmail.com>
Subject: [PATCH v3] x86/PCI: MMCONFIG: cleanup and add address warning to pci_mmconfig_insert
Date: Sat, 27 Jul 2013 16:39:41 -0400 [thread overview]
Message-ID: <1374957581-5542-1-git-send-email-ethan.kernel@gmail.com> (raw)
V2: Corrected code style and tested for Linux v 3.11-rc2
V3: Fix the no space betwween words typo and keep the string in one line.
Signed-off-by: ethan.zhao <ethan.kernel@gmail.com>
---
arch/x86/pci/mmconfig-shared.c | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 082e881..619b74b 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -700,8 +700,12 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end,
if (!(pci_probe & PCI_PROBE_MMCONF) || pci_mmcfg_arch_init_failed)
return -ENODEV;
- if (start > end)
+ if (start > end || !addr) {
+ dev_warn(dev, FW_INFO
+ "Invalid address to add MMCONFIG start %02x end %02x addr %pR\n",
+ start, end, addr);
return -EINVAL;
+ }
mutex_lock(&pci_mmcfg_lock);
cfg = pci_mmconfig_lookup(seg, start);
@@ -716,11 +720,6 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end,
return -EEXIST;
}
- if (!addr) {
- mutex_unlock(&pci_mmcfg_lock);
- return -EINVAL;
- }
-
rc = -EBUSY;
cfg = pci_mmconfig_alloc(seg, start, end, addr);
if (cfg == NULL) {
--
1.7.1
reply other threads:[~2013-07-28 3:58 UTC|newest]
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