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mwifiex: fix uninitialized variable access in pcie_remove 

Checking the firmware status from PCIe register only works
if the register is available, otherwise we end up with
random behavior:

drivers/net/wireless/marvell/mwifiex/pcie.c: In function 'mwifiex_pcie_remove':
drivers/net/wireless/marvell/mwifiex/pcie.c:585:5: error: 'fw_status' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This makes sure we treat the absence of the register as a failure.

Fixes: 045f0c1b5e ("mwifiex: get rid of global user_rmmod flag")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Arnd Bergmann 2017-01-13 16:35:03 +01:00 committed by Kalle Valo
parent cc75c57780
commit 0e8edb9aed
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/marvell/mwifiex/pcie.c
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@ -299,6 +299,8 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
reg = card->pcie.reg;
if (reg)
ret = mwifiex_read_reg(adapter, reg->fw_status, &fw_status);
else
fw_status = -1;
if (fw_status == FIRMWARE_READY_PCIE && !adapter->mfg_mode) {
mwifiex_deauthenticate_all(adapter);