From: Dexuan Cui <decui@microsoft.com>
Date: Thu, 10 Nov 2016 07:17:48 +0000 (+0000)
Subject: PCI: hv: Use the correct buffer size in new_pcichild_device()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8286e96d95f2dd01a72e3500322ad95153a469c2;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

PCI: hv: Use the correct buffer size in new_pcichild_device()

We don't really need such a big on-stack buffer.  vmbus_sendpacket() here
only uses sizeof(struct pci_child_message).

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jake Oshins <jakeo@microsoft.com>
---

diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index 06c98695c06c..9ea63b4b0e58 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -1271,9 +1271,9 @@ static struct hv_pci_dev *new_pcichild_device(struct hv_pcibus_device *hbus,
 	struct hv_pci_dev *hpdev;
 	struct pci_child_message *res_req;
 	struct q_res_req_compl comp_pkt;
-	union {
-	struct pci_packet init_packet;
-		u8 buffer[0x100];
+	struct {
+		struct pci_packet init_packet;
+		u8 buffer[sizeof(struct pci_child_message)];
 	} pkt;
 	unsigned long flags;
 	int ret;