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gadgetfs: clean up

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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>
This commit is contained in:
Al Viro 2012-07-22 21:23:33 +04:00
parent 09fada5b5f
commit 20818a0caa
2 changed files with 8 additions and 10 deletions
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12
drivers/usb/gadget/storage_common.c
View File

@ -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;
}

6
drivers/usb/gadget/u_uac1.c
View File

@ -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;
}