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[PATCH] USB: gadget zero and dma-coherent buffers

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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: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell 2006-01-20 14:38:49 -08:00 committed by Greg Kroah-Hartman
parent c02c4bb205
commit 69396dcfa3
1 changed files with 5 additions and 3 deletions
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8
drivers/usb/gadget/zero.c
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@ -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);