From b46413367961c2e8bd827e067a231be982aaeee2 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 21 Nov 2011 17:25:37 -0500 Subject: [PATCH] iio: fix a leak due to improper use of anon_inode_getfd() it can fail and in that case ->release() will *not* be called... Signed-off-by: Al Viro --- drivers/staging/iio/industrialio-core.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index 326e967d54ef..26564094e33b 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -242,6 +242,8 @@ static const struct file_operations iio_event_chrdev_fileops = { static int iio_event_getfd(struct iio_dev *indio_dev) { + int fd; + if (indio_dev->event_interface == NULL) return -ENODEV; @@ -252,9 +254,15 @@ static int iio_event_getfd(struct iio_dev *indio_dev) return -EBUSY; } mutex_unlock(&indio_dev->event_interface->event_list_lock); - return anon_inode_getfd("iio:event", + fd = anon_inode_getfd("iio:event", &iio_event_chrdev_fileops, indio_dev->event_interface, O_RDONLY); + if (fd < 0) { + mutex_lock(&indio_dev->event_interface->event_list_lock); + clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags); + mutex_unlock(&indio_dev->event_interface->event_list_lock); + } + return fd; } static int __init iio_init(void) -- GitLab