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mwifiex: prevent corruption instead of just warning 

Probably we never hit this condition, but in case we do, we may as
well put a return here instead of just printing a warning message and
then corrupting memory.  The caller doesn't check the return code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Carpenter 2011-11-07 19:31:47 -08:00 committed by John W. Linville
parent 7d7ab02204
commit 1eb54c8a0f
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/mwifiex/pcie.c
View File

@ -1228,9 +1228,12 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
if (!skb)
return 0;
if (rdptr >= MWIFIEX_MAX_EVT_BD)
if (rdptr >= MWIFIEX_MAX_EVT_BD) {
dev_err(adapter->dev, "event_complete: Invalid rdptr 0x%x\n",
rdptr);
ret = -EINVAL;
goto done;
}
/* Read the event ring write pointer set by firmware */
if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {