Merge tag 'mvebu-dt-4.19-1' of git://git.infradead.org/linux-mvebu into next/dt

[linux-block.git] / drivers / usb / gadget / function / f_fs.c

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index dce9d12c7981afb1733be479e9daa43977bd218a..33e2030503fa5b47cff5de52c43ac080b5507702 100644 (file)
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -215,6 +215,7 @@ struct ffs_io_data {
 
        struct mm_struct *mm;
        struct work_struct work;
+       struct work_struct cancellation_work;
 
        struct usb_ep *ep;
        struct usb_request *req;
@@ -1072,22 +1073,31 @@ ffs_epfile_open(struct inode *inode, struct file *file)
        return 0;
 }
 
+static void ffs_aio_cancel_worker(struct work_struct *work)
+{
+       struct ffs_io_data *io_data = container_of(work, struct ffs_io_data,
+                                                  cancellation_work);
+
+       ENTER();
+
+       usb_ep_dequeue(io_data->ep, io_data->req);
+}
+
 static int ffs_aio_cancel(struct kiocb *kiocb)
 {
        struct ffs_io_data *io_data = kiocb->private;
-       struct ffs_epfile *epfile = kiocb->ki_filp->private_data;
+       struct ffs_data *ffs = io_data->ffs;
        int value;
 
        ENTER();
 
-       spin_lock_irq(&epfile->ffs->eps_lock);
-
-       if (likely(io_data && io_data->ep && io_data->req))
-               value = usb_ep_dequeue(io_data->ep, io_data->req);
-       else
+       if (likely(io_data && io_data->ep && io_data->req)) {
+               INIT_WORK(&io_data->cancellation_work, ffs_aio_cancel_worker);
+               queue_work(ffs->io_completion_wq, &io_data->cancellation_work);
+               value = -EINPROGRESS;
+       } else {
                value = -EINVAL;
-
-       spin_unlock_irq(&epfile->ffs->eps_lock);
+       }
 
        return value;
 }