lkml.org 
[lkml]   [2023]   [Mar]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/3] usb: gadget: functionfs: DMABUF import interface
Date
Hi,

This small patchset adds three new IOCTLs that can be used to attach,
detach, or transfer from/to a DMABUF object.

Changes since v1:
- patch [2/3] is new. I had to reuse a piece of code that was already
duplicated in the driver, so I factorized the code.
- Make ffs_dma_resv_lock() static
- Add MODULE_IMPORT_NS(DMA_BUF);
- The attach/detach functions are now performed without locking the
eps_lock spinlock. The transfer function starts with the spinlock
unlocked, then locks it before allocating and queueing the USB
transfer.

Cheers,
-Paul

Paul Cercueil (3):
usb: gadget: Support already-mapped DMA SGs
usb: gadget: functionfs: Factorize wait-for-endpoint code
usb: gadget: functionfs: Add DMABUF import interface

drivers/usb/gadget/function/f_fs.c | 467 ++++++++++++++++++++++++++--
drivers/usb/gadget/udc/core.c | 7 +-
include/linux/usb/gadget.h | 2 +
include/uapi/linux/usb/functionfs.h | 14 +-
4 files changed, 468 insertions(+), 22 deletions(-)

--
2.39.2

\
 
 \ /
  Last update: 2023-03-27 01:12    [W:0.255 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site