From: Daeseok Youn <daeseok.youn@gmail.com>
Date: Mon, 26 Sep 2016 00:42:02 +0000 (+0900)
Subject: staging: dgnc: kfree for board structure in dgnc_found_board()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=467132b029fedbffef2e252f2caff4f9dd9a59ff;p=linux-beck.git

staging: dgnc: kfree for board structure in dgnc_found_board()

The board structure should be freed when any function was failed
in dgnc_found_board(). And the board strucure will be stored
into dgnc_board array when the dgnc_found_board() function has no error.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index 58cebf425e36..0114e785a09c 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -353,9 +353,7 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
 	int rc = 0;
 
 	/* get the board structure and prep it */
-	dgnc_board[dgnc_num_boards] = kzalloc(sizeof(*brd), GFP_KERNEL);
-	brd = dgnc_board[dgnc_num_boards];
-
+	brd = kzalloc(sizeof(*brd), GFP_KERNEL);
 	if (!brd)
 		return -ENOMEM;
 
@@ -411,7 +409,8 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
 		if (!brd->membase) {
 			dev_err(&brd->pdev->dev,
 				"Card has no PCI IO resources, failing.\n");
-			return -ENODEV;
+			rc = -ENODEV;
+			goto failed;
 		}
 
 		brd->membase_end = pci_resource_end(pdev, 4);
@@ -502,7 +501,8 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
 	default:
 		dev_err(&brd->pdev->dev,
 			"Didn't find any compatible Neo/Classic PCI boards.\n");
-		return -ENXIO;
+		rc = -ENXIO;
+		goto failed;
 	}
 
 	/*
@@ -539,14 +539,15 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
 
 	wake_up_interruptible(&brd->state_wait);
 
+	dgnc_board[dgnc_num_boards] = brd;
+
 	return 0;
 
 failed:
 	dgnc_tty_uninit(brd);
-	brd->state = BOARD_FAILED;
-	brd->dpastatus = BD_NOFEP;
+	kfree(brd);
 
-	return -ENXIO;
+	return rc;
 }
 
 static int dgnc_finalize_board_init(struct dgnc_board *brd)