From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 22 Jul 2012 17:09:14 +0000 (+0400)
Subject: slightly reduce lossage in gdm72xx
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=09fada5b5f1f56502bb14f36a69a2c31cea262be;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

slightly reduce lossage in gdm72xx

* filp_close() needs non-NULL second argument only if it'd been in descriptor
table
* opened files have non-NULL dentries, TYVM
* ... and those dentries are positive - it's kinda hard to open a file that
doesn't exist.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/drivers/staging/gdm72xx/sdio_boot.c b/drivers/staging/gdm72xx/sdio_boot.c
index 6ff4dc372522..5d484793c2e7 100644
--- a/drivers/staging/gdm72xx/sdio_boot.c
+++ b/drivers/staging/gdm72xx/sdio_boot.c
@@ -67,9 +67,8 @@ static int download_image(struct sdio_func *func, char *img_name)
 		return -ENOENT;
 	}
 
-	if (filp->f_dentry)
-		inode = filp->f_dentry->d_inode;
-	if (!inode || !S_ISREG(inode->i_mode)) {
+	inode = filp->f_dentry->d_inode;
+	if (!S_ISREG(inode->i_mode)) {
 		printk(KERN_ERR "Invalid file type: %s\n", img_name);
 		ret = -EINVAL;
 		goto out;
@@ -124,7 +123,7 @@ static int download_image(struct sdio_func *func, char *img_name)
 		pno++;
 	}
 out:
-	filp_close(filp, current->files);
+	filp_close(filp, NULL);
 	return ret;
 }
 
diff --git a/drivers/staging/gdm72xx/usb_boot.c b/drivers/staging/gdm72xx/usb_boot.c
index 5a0e030220dc..b366a54386fb 100644
--- a/drivers/staging/gdm72xx/usb_boot.c
+++ b/drivers/staging/gdm72xx/usb_boot.c
@@ -174,14 +174,12 @@ int usb_boot(struct usb_device *usbdev, u16 pid)
 	filp = filp_open(img_name, O_RDONLY | O_LARGEFILE, 0);
 	if (IS_ERR(filp)) {
 		printk(KERN_ERR "Can't find %s.\n", img_name);
-		set_fs(fs);
 		ret = -ENOENT;
 		goto restore_fs;
 	}
 
-	if (filp->f_dentry)
-		inode = filp->f_dentry->d_inode;
-	if (!inode || !S_ISREG(inode->i_mode)) {
+	inode = filp->f_dentry->d_inode;
+	if (!S_ISREG(inode->i_mode)) {
 		printk(KERN_ERR "Invalid file type: %s\n", img_name);
 		ret = -EINVAL;
 		goto out;
@@ -263,7 +261,7 @@ int usb_boot(struct usb_device *usbdev, u16 pid)
 		ret = -EINVAL;
 	}
 out:
-	filp_close(filp, current->files);
+	filp_close(filp, NULL);
 
 restore_fs:
 	set_fs(fs);
@@ -323,13 +321,11 @@ static int em_download_image(struct usb_device *usbdev, char *path,
 		goto restore_fs;
 	}
 
-	if (filp->f_dentry) {
-		inode = filp->f_dentry->d_inode;
-		if (!inode || !S_ISREG(inode->i_mode)) {
-			printk(KERN_ERR "Invalid file type: %s\n", path);
-			ret = -EINVAL;
-			goto out;
-		}
+	inode = filp->f_dentry->d_inode;
+	if (!S_ISREG(inode->i_mode)) {
+		printk(KERN_ERR "Invalid file type: %s\n", path);
+		ret = -EINVAL;
+		goto out;
 	}
 
 	buf = kmalloc(DOWNLOAD_CHUCK + pad_size, GFP_KERNEL);
@@ -365,7 +361,7 @@ static int em_download_image(struct usb_device *usbdev, char *path,
 		goto out;
 
 out:
-	filp_close(filp, current->files);
+	filp_close(filp, NULL);
 
 restore_fs:
 	set_fs(fs);