From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Tue, 17 May 2016 23:16:01 +0000 (+0200)
Subject: mwiflex: avoid possible null pointer dereference
X-Git-Tag: v4.8-rc1~140^2~279^2~37
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=141bcf099076df1a74317a5b14dcd56c933b9de8;p=platform%2Fkernel%2Flinux-exynos.git

mwiflex: avoid possible null pointer dereference

Do not dereference card before checking against NULL value.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 9246ce8..a35db02 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2901,10 +2901,11 @@ static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
 {
 	struct pcie_service_card *card = adapter->card;
 	const struct mwifiex_pcie_card_reg *reg;
-	struct pci_dev *pdev = card->dev;
+	struct pci_dev *pdev;
 	int i;
 
 	if (card) {
+		pdev = card->dev;
 		if (card->msix_enable) {
 			for (i = 0; i < MWIFIEX_NUM_MSIX_VECTORS; i++)
 				synchronize_irq(card->msix_entries[i].vector);