diff options
| author | Otavio Salvador <otavio@ossystems.com.br> | 2020-05-20 08:43:03 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-05-20 08:43:03 -0300 |
| commit | 1279cd128bba968ebe0a2df7f7ae38bae90250ef (patch) | |
| tree | df6b1a190760f51465122ca4c13492d5ac5984c6 /drivers/usb/gadget/function/f_fs.c | |
| parent | 0a8ab17689e628c84a666195bfc6ab85d11cf057 (diff) | |
| parent | 2ae782ca839e0ee07de37122ddea362adff2e975 (diff) | |
Merge pull request #76 from toradex/4.9-2.3.x-imx
4.9 2.3.x imx
Diffstat (limited to 'drivers/usb/gadget/function/f_fs.c')
| -rw-r--r-- | drivers/usb/gadget/function/f_fs.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 04eb64381d92..223b28cbf3c8 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1008,6 +1008,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) * condition with req->complete callback. */ usb_ep_dequeue(ep->ep, req); + wait_for_completion(&done); interrupted = ep->status < 0; } @@ -1035,6 +1036,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC); if (unlikely(ret)) { + io_data->req = NULL; usb_ep_free_request(ep->ep, req); goto error_lock; } @@ -1076,18 +1078,19 @@ 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; + unsigned long flags; int value; ENTER(); - spin_lock_irq(&epfile->ffs->eps_lock); + spin_lock_irqsave(&epfile->ffs->eps_lock, flags); if (likely(io_data && io_data->ep && io_data->req)) value = usb_ep_dequeue(io_data->ep, io_data->req); else value = -EINVAL; - spin_unlock_irq(&epfile->ffs->eps_lock); + spin_unlock_irqrestore(&epfile->ffs->eps_lock, flags); return value; } @@ -1100,11 +1103,12 @@ static ssize_t ffs_epfile_write_iter(struct kiocb *kiocb, struct iov_iter *from) ENTER(); if (!is_sync_kiocb(kiocb)) { - p = kmalloc(sizeof(io_data), GFP_KERNEL); + p = kzalloc(sizeof(io_data), GFP_KERNEL); if (unlikely(!p)) return -ENOMEM; p->aio = true; } else { + memset(p, 0, sizeof(*p)); p->aio = false; } @@ -1136,11 +1140,12 @@ static ssize_t ffs_epfile_read_iter(struct kiocb *kiocb, struct iov_iter *to) ENTER(); if (!is_sync_kiocb(kiocb)) { - p = kmalloc(sizeof(io_data), GFP_KERNEL); + p = kzalloc(sizeof(io_data), GFP_KERNEL); if (unlikely(!p)) return -ENOMEM; p->aio = true; } else { + memset(p, 0, sizeof(*p)); p->aio = false; } |