netdev - re: rsi: Add RS9113 wireless driver

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Date:	Thu, 27 Mar 2014 18:05:01 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	fariyaf@...il.com
Cc:	Fariya Fatima <fariyaf@...il.com>, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org
Subject: re: rsi: Add RS9113 wireless driver

Hello Fariya Fatima,

The patch dad0d04fa7ba: "rsi: Add RS9113 wireless driver" from Mar
16, 2014, leads to the following static checker warning:

	drivers/net/wireless/rsi/rsi_91x_mgmt.c:751 rsi_load_bootup_params()
	warn: signedness bug returning '(-12)'

drivers/net/wireless/rsi/rsi_91x_mgmt.c
   741  static u8 rsi_load_bootup_params(struct rsi_common *common)
   742  {
   743          struct sk_buff *skb;
   744          struct rsi_boot_params *boot_params;
   745  
   746          rsi_dbg(MGMT_TX_ZONE, "%s: Sending boot params frame\n", __func__);
   747          skb = dev_alloc_skb(sizeof(struct rsi_boot_params));
   748          if (!skb) {
   749                  rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
   750                          __func__);
   751                  return -ENOMEM;
                               ^^^^^^^
This doesn't matter because the caller doesn't progate the error code
anyway.  Please fix that as well.

	ret = rsi_load_bootup_params(...);
	if (ret)
		return ret;

Instead of:
	if (rsi_load_bootup_params(...))
		erturn -ENOMEM;

   752          }

regards,
dan carpenter
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