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mwl8k: fix error handling in mwl8k_post_cmd()

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If pci_map_single() fails in mwl8k_post_cmd(),
it returns -ENOMEM immediately, while cleanup is required.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Alexey Khoroshilov 2019-04-06 00:26:38 +03:00 committed by Kalle Valo
parent b25105e126
commit d1717282af
1 changed files with 5 additions and 2 deletions
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7
drivers/net/wireless/marvell/mwl8k.c
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@ -2234,8 +2234,10 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
dma_size = le16_to_cpu(cmd->length);
dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
PCI_DMA_BIDIRECTIONAL);
if (pci_dma_mapping_error(priv->pdev, dma_addr))
return -ENOMEM;
if (pci_dma_mapping_error(priv->pdev, dma_addr)) {
rc = -ENOMEM;
goto exit;
}
priv->hostcmd_wait = &cmd_wait;
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
@ -2275,6 +2277,7 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
ms);
}
exit:
if (bitmap)
mwl8k_enable_bsses(hw, true, bitmap);