From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 22 Jul 2012 17:23:33 +0000 (+0400)
Subject: gadgetfs: clean up
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=20818a0caa84adbfe2f1e9c0e036f5b09a9692a2;p=openwrt%2Fstaging%2Fblogic.git

gadgetfs: clean up

sigh...
* opened files have non-NULL dentries and non-NULL inodes
* close_filp() needs current->files only if the file had been
in descriptor table.

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

diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index 8081ca3a70a2..f92943246820 100644
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -654,9 +654,8 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
 	if (!(filp->f_mode & FMODE_WRITE))
 		ro = 1;
 
-	if (filp->f_path.dentry)
-		inode = filp->f_path.dentry->d_inode;
-	if (!inode || (!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))) {
+	inode = filp->f_path.dentry->d_inode;
+	if ((!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))) {
 		LINFO(curlun, "invalid file type: %s\n", filename);
 		goto out;
 	}
@@ -665,7 +664,7 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
 	 * If we can't read the file, it's no good.
 	 * If we can't write the file, use it read-only.
 	 */
-	if (!filp->f_op || !(filp->f_op->read || filp->f_op->aio_read)) {
+	if (!(filp->f_op->read || filp->f_op->aio_read)) {
 		LINFO(curlun, "file not readable: %s\n", filename);
 		goto out;
 	}
@@ -707,16 +706,15 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
 		goto out;
 	}
 
-	get_file(filp);
 	curlun->ro = ro;
 	curlun->filp = filp;
 	curlun->file_length = size;
 	curlun->num_sectors = num_sectors;
 	LDBG(curlun, "open backing file: %s\n", filename);
-	rc = 0;
+	return 0;
 
 out:
-	filp_close(filp, current->files);
+	fput(filp);
 	return rc;
 }
 
diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c
index af9898982059..e0c5e88e03ed 100644
--- a/drivers/usb/gadget/u_uac1.c
+++ b/drivers/usb/gadget/u_uac1.c
@@ -275,17 +275,17 @@ static int gaudio_close_snd_dev(struct gaudio *gau)
 	/* Close control device */
 	snd = &gau->control;
 	if (snd->filp)
-		filp_close(snd->filp, current->files);
+		filp_close(snd->filp, NULL);
 
 	/* Close PCM playback device and setup substream */
 	snd = &gau->playback;
 	if (snd->filp)
-		filp_close(snd->filp, current->files);
+		filp_close(snd->filp, NULL);
 
 	/* Close PCM capture device and setup substream */
 	snd = &gau->capture;
 	if (snd->filp)
-		filp_close(snd->filp, current->files);
+		filp_close(snd->filp, NULL);
 
 	return 0;
 }