From: Karthik D A <karthida@marvell.com>
Date: Fri, 15 Jul 2016 12:48:39 +0000 (+0530)
Subject: mwifiex: Fix request_irq() failure handling
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2af86f9d954ee86e9b1c492e025de37a1b6d2db8;p=linux-beck.git

mwifiex: Fix request_irq() failure handling

It's been observed that request_irq() failure leads to a system crash
due to a bug in mwifiex driver.
When this failure happens, mwifiex_add_card() already takes care of
clearing and freeing adapter->card pointer. This patch removes the
redundant cleanup code causing crash.

Signed-off-by: Karthik D A <karthida@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 22fe993b7dbb..0faf4a2c006e 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -202,7 +202,6 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
 	if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
 			     MWIFIEX_PCIE)) {
 		pr_err("%s failed\n", __func__);
-		kfree(card);
 		return -1;
 	}
 
@@ -2843,7 +2842,6 @@ static int mwifiex_pcie_request_irq(struct mwifiex_adapter *adapter)
 			  "MRVL_PCIE", &card->share_irq_ctx);
 	if (ret) {
 		pr_err("request_irq failed: ret=%d\n", ret);
-		adapter->card = NULL;
 		return -1;
 	}