lkml.org 
[lkml]   [2020]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v2 11/15] usb: misc: ldusb: update to use usb_control_msg_send()
    Date
    The newer usb_control_msg_{send|recv}() API are an improvement on the
    existing usb_control_msg() as it ensures that a short read/write is treated
    as an error, data can be used off the stack, and raw usb pipes need not be
    created in the calling functions.
    For this reason, the instance of usb_control_msg_send() has been replaced
    with usb_control_msg_send() appropriately.

    Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
    ---
    drivers/usb/misc/ldusb.c | 8 +++-----
    1 file changed, 3 insertions(+), 5 deletions(-)

    diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
    index 670e4d91e9ca..259ead4edecb 100644
    --- a/drivers/usb/misc/ldusb.c
    +++ b/drivers/usb/misc/ldusb.c
    @@ -573,15 +573,13 @@ static ssize_t ld_usb_write(struct file *file, const char __user *buffer,
    }

    if (dev->interrupt_out_endpoint == NULL) {
    - /* try HID_REQ_SET_REPORT=9 on control_endpoint instead of interrupt_out_endpoint */
    - retval = usb_control_msg(interface_to_usbdev(dev->intf),
    - usb_sndctrlpipe(interface_to_usbdev(dev->intf), 0),
    - 9,
    + retval = usb_control_msg_send(interface_to_usbdev(dev->intf),
    + 0, 9,
    USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
    1 << 8, 0,
    dev->interrupt_out_buffer,
    bytes_to_write,
    - USB_CTRL_SET_TIMEOUT);
    + USB_CTRL_SET_TIMEOUT, GFP_KERNEL);
    if (retval < 0)
    dev_err(&dev->intf->dev,
    "Couldn't submit HID_REQ_SET_REPORT %d\n",
    --
    2.25.1
    \
     
     \ /
      Last update: 2020-11-30 02:34    [W:2.150 / U:0.148 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site