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Staging: wlan-ng: fix sparse warning in prism2fw.c

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Fix the following sparse warning :

In file included from drivers/staging/wlan-ng/prism2usb.c:5:0:
drivers/staging/wlan-ng/prism2fw.c: In function
‘read_cardpda.constprop.43’:
drivers/staging/wlan-ng/prism2fw.c:792:1: warning: the frame size of
1068 bytes is larger than 1024 bytes [-Wframe-larger-than=]

The variable to 'struct p80211msg_p2req_readpda' was previously being created
on the stack, which inturn exeeded the frame size limit, resulting in a
sparse warning. This patch alloctes the memory to the structure dynamically
and the operations are left unchanged.

Signed-off-by: A Raghavendra Rao <arrao@cdac.in>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
A Raghavendra Rao 2014-08-07 14:10:39 +05:30 committed by Greg Kroah-Hartman
parent 0d0e9d9e77
commit 41cb65c485
1 changed files with 18 additions and 13 deletions
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31
drivers/staging/wlan-ng/prism2fw.c
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@ -764,30 +764,35 @@ static int plugimage(struct imgchunk *fchunk, unsigned int nfchunks,
static int read_cardpda(struct pda *pda, wlandevice_t *wlandev) static int read_cardpda(struct pda *pda, wlandevice_t *wlandev)
{ {
int result = 0; int result = 0;
struct p80211msg_p2req_readpda msg; struct p80211msg_p2req_readpda *msg;
msg = kzalloc(sizeof(*msg), GFP_KERNEL);
if (!msg)
return -ENOMEM;
/* set up the msg */ /* set up the msg */
msg.msgcode = DIDmsg_p2req_readpda; msg->msgcode = DIDmsg_p2req_readpda;
msg.msglen = sizeof(msg); msg->msglen = sizeof(msg);
strcpy(msg.devname, wlandev->name); strcpy(msg->devname, wlandev->name);
msg.pda.did = DIDmsg_p2req_readpda_pda; msg->pda.did = DIDmsg_p2req_readpda_pda;
msg.pda.len = HFA384x_PDA_LEN_MAX; msg->pda.len = HFA384x_PDA_LEN_MAX;
msg.pda.status = P80211ENUM_msgitem_status_no_value; msg->pda.status = P80211ENUM_msgitem_status_no_value;
msg.resultcode.did = DIDmsg_p2req_readpda_resultcode; msg->resultcode.did = DIDmsg_p2req_readpda_resultcode;
msg.resultcode.len = sizeof(u32); msg->resultcode.len = sizeof(u32);
msg.resultcode.status = P80211ENUM_msgitem_status_no_value; msg->resultcode.status = P80211ENUM_msgitem_status_no_value;
if (prism2mgmt_readpda(wlandev, &msg) != 0) { if (prism2mgmt_readpda(wlandev, msg) != 0) {
/* prism2mgmt_readpda prints an errno if appropriate */ /* prism2mgmt_readpda prints an errno if appropriate */
result = -1; result = -1;
} else if (msg.resultcode.data == P80211ENUM_resultcode_success) { } else if (msg->resultcode.data == P80211ENUM_resultcode_success) {
memcpy(pda->buf, msg.pda.data, HFA384x_PDA_LEN_MAX); memcpy(pda->buf, msg->pda.data, HFA384x_PDA_LEN_MAX);
result = mkpdrlist(pda); result = mkpdrlist(pda);
} else { } else {
/* resultcode must've been something other than success */ /* resultcode must've been something other than success */
result = -1; result = -1;
} }
kfree(msg);
return result; return result;
} }