redonkable/alistair23-linux
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mwl8k: don't return zero on failure paths in mwl8k_probe[_hw]()

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If pci_iomap() fails in mwl8k_probe(), it breaks off initialization,
deallocates all resources, but returns zero.
There is a similar issue when priv->rxd_ops is NULL in mwl8k_probe_hw().

The patch adds proper error code return values.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Alexey Khoroshilov 2013-01-19 01:24:01 +04:00 committed by John W. Linville
parent 7532c7d013
commit a2ca8ecb8f
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/mwl8k.c
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@ -5555,6 +5555,7 @@ static int mwl8k_probe_hw(struct ieee80211_hw *hw)
if (priv->rxd_ops == NULL) {
wiphy_err(hw->wiphy,
"Driver does not have AP firmware image support for this hardware\n");
rc = -ENOENT;
goto err_stop_firmware;
}
} else {
@ -5901,6 +5902,7 @@ static int mwl8k_probe(struct pci_dev *pdev,
priv->sram = pci_iomap(pdev, 0, 0x10000);
if (priv->sram == NULL) {
wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
rc = -EIO;
goto err_iounmap;
}
@ -5913,6 +5915,7 @@ static int mwl8k_probe(struct pci_dev *pdev,
priv->regs = pci_iomap(pdev, 2, 0x10000);
if (priv->regs == NULL) {
wiphy_err(hw->wiphy, "Cannot map device registers\n");
rc = -EIO;
goto err_iounmap;
}
}