linux-kernel - [PATCH 01/18] char: moxa: call disable_pci_device() if pci

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1281124152-12630-1-git-send-email-segooon@gmail.com>
Date:	Fri,  6 Aug 2010 23:49:10 +0400
From:	Kulikov Vasiliy <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Alan Cox <alan@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rakib Mullick <rakib.mullick@...il.com>,
	Ben Hutchings <ben@...adent.org.uk>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 01/18] char: moxa: call disable_pci_device() if pci_probe() failed

Driver should call disable_pci_device() if it returns from pci_probe()
with error. Also it must not be called if pci_request_region() fails as
it means that somebody uses device resources and rules the device.

Move pci_enable_device() after checking moxa_boards[] to remove senseless
pci_enable_device()/pci_disable_device().

Signed-off-by: Kulikov Vasiliy <segooon@...il.com>
---
 drivers/char/moxa.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 107b0bd..0ea5aeb 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -939,11 +939,6 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev,
 	int board_type = ent->driver_data;
 	int retval;
 
-	retval = pci_enable_device(pdev);
-	if (retval) {
-		dev_err(&pdev->dev, "can't enable pci device\n");
-		goto err;
-	}
 
 	for (i = 0; i < MAX_BOARDS; i++)
 		if (moxa_boards[i].basemem == NULL)
@@ -956,6 +951,12 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev,
 		goto err;
 	}
 
+	retval = pci_enable_device(pdev);
+	if (retval) {
+		dev_err(&pdev->dev, "can't enable pci device\n");
+		goto err;
+	}
+
 	board = &moxa_boards[i];
 
 	retval = pci_request_region(pdev, 2, "moxa-base");
@@ -1001,6 +1002,7 @@ err_base:
 	board->basemem = NULL;
 err_reg:
 	pci_release_region(pdev, 2);
+	pci_disable_device(pdev);
 err:
 	return retval;
 }
-- 
1.7.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/