linux-kernel - [PATCHv3 14/16] staging: vme_user: remove buf

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

Message-Id: <1432814833-5320-15-git-send-email-dmitry.kalinkin@gmail.com>
Date:	Thu, 28 May 2015 15:07:11 +0300
From:	Dmitry Kalinkin <dmitry.kalinkin@...il.com>
To:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Cc:	Martyn Welch <martyn.welch@...com>,
	Manohar Vanga <manohar.vanga@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Igor Alekseev <igor.alekseev@...p.ru>,
	Dmitry Kalinkin <dmitry.kalinkin@...il.com>
Subject: [PATCHv3 14/16] staging: vme_user: remove buf_unalloc helper

buf_unalloc is essentially a vme_free_consistent:
1) image[i].kern_buf is never NULL in buf_alloc call
2) kern_buf, pci_buf and size_buf get zeroed in vme_user_probe anyway

Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@...il.com>
Cc: Igor Alekseev <igor.alekseev@...p.ru>
---
 drivers/staging/vme/devices/vme_user.c | 31 ++++---------------------------
 1 file changed, 4 insertions(+), 27 deletions(-)

diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
index 381b052..5cc782e 100644
--- a/drivers/staging/vme/devices/vme_user.c
+++ b/drivers/staging/vme/devices/vme_user.c
@@ -742,31 +742,6 @@ static const struct file_operations vme_user_fops = {
 	.mmap = vme_user_mmap,
 };
 
-/*
- * Unallocate a previously allocated buffer
- */
-static void buf_unalloc(int num)
-{
-	if (image[num].kern_buf) {
-#ifdef VME_DEBUG
-		pr_debug("UniverseII:Releasing buffer at %p\n",
-			 image[num].pci_buf);
-#endif
-
-		vme_free_consistent(image[num].resource, image[num].size_buf,
-			image[num].kern_buf, image[num].pci_buf);
-
-		image[num].kern_buf = NULL;
-		image[num].pci_buf = 0;
-		image[num].size_buf = 0;
-
-#ifdef VME_DEBUG
-	} else {
-		pr_debug("UniverseII: Buffer not allocated\n");
-#endif
-	}
-}
-
 static int vme_user_match(struct vme_dev *vdev)
 {
 	int i;
@@ -958,7 +933,8 @@ err_master:
 err_slave:
 	while (i > SLAVE_MINOR) {
 		i--;
-		buf_unalloc(i);
+		vme_free_consistent(image[i].resource, image[i].size_buf,
+				    image[i].kern_buf, image[i].pci_buf);
 		vme_slave_free(image[i].resource);
 	}
 err_class:
@@ -990,7 +966,8 @@ static int vme_user_remove(struct vme_dev *dev)
 
 	for (i = SLAVE_MINOR; i < (SLAVE_MAX + 1); i++) {
 		vme_slave_set(image[i].resource, 0, 0, 0, 0, VME_A32, 0);
-		buf_unalloc(i);
+		vme_free_consistent(image[i].resource, image[i].size_buf,
+				    image[i].kern_buf, image[i].pci_buf);
 		vme_slave_free(image[i].resource);
 	}
 
-- 
1.8.3.1

--
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/