On Wed, Sep 02, 2020 at 01:01:06PM +0200, Greg Kroah-Hartman wrote: > There are a few calls to usb_control_msg() that can be converted to use > usb_control_msg_send() instead, so do that in order to make the error > checking a bit simpler and the code smaller. > > Cc: Alan Stern <[email protected]> > Signed-off-by: Greg Kroah-Hartman <[email protected]>
One problem in this patch... > @@ -3896,27 +3875,14 @@ static int usb_req_set_sel(struct usb_device *udev, > enum usb3_link_state state) > if (u2_pel > USB3_LPM_MAX_U2_SEL_PEL) > u2_pel = USB3_LPM_MAX_U2_SEL_PEL; > > - /* > - * usb_enable_lpm() can be called as part of a failed device reset, > - * which may be initiated by an error path of a mass storage driver. > - * Therefore, use GFP_NOIO. > - */ > - sel_values = kmalloc(sizeof *(sel_values), GFP_NOIO); > - if (!sel_values) > - return -ENOMEM; > - > - sel_values->u1_sel = u1_sel; > - sel_values->u1_pel = u1_pel; > - sel_values->u2_sel = cpu_to_le16(u2_sel); > - sel_values->u2_pel = cpu_to_le16(u2_pel); > + sel_values.u1_sel = u1_sel; > + sel_values.u1_pel = u1_pel; > + sel_values.u2_sel = cpu_to_le16(u2_sel); > + sel_values.u2_pel = cpu_to_le16(u2_pel); > > - ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), > - USB_REQ_SET_SEL, > - USB_RECIP_DEVICE, > - 0, 0, > - sel_values, sizeof *(sel_values), > - USB_CTRL_SET_TIMEOUT); > - kfree(sel_values); > + ret = usb_control_msg_send(udev, 0, USB_REQ_SET_SEL, USB_RECIP_DEVICE, > + 0, 0, &sel_values, sizeof(sel_values), > + USB_CTRL_SET_TIMEOUT); This effectively changes GFP_NOIO to GFP_KERNEL. Probably you should leave this particular call alone. Alan Stern
