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Subject[PATCH] mwifiex: fix possible NULL dereference
Date
From: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>

We have a check for card just after dereferencing it. So if it is NULL
we have already dereferenced it before its check. Lets dereference it
after checking card for NULL.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
---
drivers/net/wireless/marvell/mwifiex/pcie.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index edf8b07..84562d0 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2884,10 +2884,11 @@ 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);
--
1.9.1
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