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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2013-01-19 01:24:01 +0400
committerJohn W. Linville <linville@tuxdriver.com>2013-01-22 16:01:30 -0500
commita2ca8ecb8ffc985e82c9570c3837408f7efe8c9d (patch)
tree571b1266c73e1c7ab993245c792a9feb9e96cd98
parent7532c7d0138a4984eb0c8b12b9c310cf8a6d6977 (diff)
mwl8k: don't return zero on failure paths in mwl8k_probe[_hw]()
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>
-rw-r--r--drivers/net/wireless/mwl8k.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index a9c0788..6835764 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -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;
}
}