From d1717282afd54a34f01628e5a4559f913c6b0317 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sat, 6 Apr 2019 00:26:38 +0300 Subject: [PATCH] mwl8k: fix error handling in mwl8k_post_cmd() 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 Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwl8k.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/marvell/mwl8k.c b/drivers/net/wireless/marvell/mwl8k.c index 8e4e9b6919e0..e0df51b62e97 100644 --- a/drivers/net/wireless/marvell/mwl8k.c +++ b/drivers/net/wireless/marvell/mwl8k.c @@ -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); -- 2.45.2