[PATCH v1 0/2] USB: Fixes for handling ITER_UBUF

[Sandeep Dhavale <dhavale@google.com>]

Since the commit 1e23db450cff ("io_uring: use iter_ubuf for single range
imports") .read_iter() can be called with iov type ITER_UBUF.
In such case dup_iter() will correctly dup but it will not allocate
any memory. But callers ffs_epfile_read_iter and ep_read_iter treat
this as a failure.

Following patches address this by checking if iter_is_ubuf().
Without the fix, async IOs from io_uring will be returned with -ENOMEM.

Sandeep Dhavale (2):
  usb: gadget: f_fs: Fix ffs_epfile_read_iter to handle ITER_UBUF
  usb: gadgetfs: Fix ep_read_iter to handle ITER_UBUF

 drivers/usb/gadget/function/f_fs.c | 2 +-
 drivers/usb/gadget/legacy/inode.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

-- 
2.40.0.348.gf938b09366-goog