* [bug report] mwifiex: add PCIe function level reset support
@ 2016-10-12 6:18 Dan Carpenter
0 siblings, 0 replies; only message in thread
From: Dan Carpenter @ 2016-10-12 6:18 UTC (permalink / raw)
To: kernel-janitors
Hello Amitkumar Karwar,
This is a semi-automatic email about new static checker warnings.
The patch 4c5dae59d2e9: "mwifiex: add PCIe function level reset
support" from Jul 26, 2016, leads to the following Smatch complaint:
drivers/net/wireless/marvell/mwifiex/pcie.c:3098 mwifiex_pcie_down_dev()
warn: variable dereferenced before check 'card' (see line 3090)
drivers/net/wireless/marvell/mwifiex/pcie.c
3089 struct pcie_service_card *card = adapter->card;
3090 const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
^^^^^^^^^^^^^^
New dereference.
3091
3092 if (mwifiex_write_reg(adapter, reg->drv_rdy, 0x00000000))
3093 mwifiex_dbg(adapter, ERROR, "Failed to write driver not-ready signature\n");
3094
3095 adapter->seq_num = 0;
3096 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
3097
3098 if (card) {
^^^^
New check is too late.
3099 if (reg->sleep_cookie)
3100 mwifiex_pcie_delete_sleep_cookie_buf(adapter);
regards,
dan carpenter
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2016-10-12 6:18 [bug report] mwifiex: add PCIe function level reset support Dan Carpenter
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