diff options
| -rw-r--r-- | drivers/usb/gadget/function/f_fs.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index eb2409dda50d..19d6a997ee6c 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -760,8 +760,8 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) ssize_t ret, data_len = -EINVAL; int halt; - ffs_log("enter: epfile name %s epfile err %d", epfile->name, - atomic_read(&epfile->error)); + ffs_log("enter: epfile name %s epfile err %d (%s)", epfile->name, + atomic_read(&epfile->error), io_data->read ? "READ" : "WRITE"); smp_mb__before_atomic(); if (atomic_read(&epfile->error)) @@ -781,6 +781,12 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) goto error; } + /* Don't wait on write if device is offline */ + if (!io_data->read) { + ret = -EINTR; + goto error; + } + /* * If ep is disabled, this fails all current IOs * and wait for next epfile open to happen. |