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Commit 69396dcf authored by David Brownell's avatar David Brownell Committed by Greg Kroah-Hartman
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[PATCH] USB: gadget zero and dma-coherent buffers 



This makes sure that the correct length is reported when freeing
a dma-coherent buffer; some platforms complain if that's wrong.
It also makes two parameters readonly in sysfs, as they're not
safe to change while tests are running.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c02c4bb2

drivers/usb/gadget/zero.c

+5 −3
Original line number Diff line number Diff line
@@ -165,8 +165,8 @@ static unsigned buflen = 4096; 
static unsigned qlen = 32;

static unsigned pattern = 0;



module_param (buflen, uint, S_IRUGO|S_IWUSR);

module_param (qlen, uint, S_IRUGO|S_IWUSR);

module_param (buflen, uint, S_IRUGO);

module_param (qlen, uint, S_IRUGO);

module_param (pattern, uint, S_IRUGO|S_IWUSR);



/*
@@ -1127,8 +1127,10 @@ zero_unbind (struct usb_gadget *gadget) 
	DBG (dev, "unbind\n");



	/* we've already been disconnected ... no i/o is active */

	if (dev->req)

	if (dev->req) {

		dev->req->length = USB_BUFSIZ;

		free_ep_req (gadget->ep0, dev->req);

	}

	del_timer_sync (&dev->resume);

	kfree (dev);

	set_gadget_data (gadget, NULL);