rt2x00: Support for large vendor requests
Adds an extra rt2x00 vendor request function to support register
transfers beyond the CSR_CACHE_SIZE / USB packet size limit. This
is useful for firmware uploads, beacon templates and keys, all
of which are to large to do with a single USB request.
Signed-off-by: Iwo Mergler <Iwo@call-direct.com.au>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 83862e7..933e6cc 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -122,6 +122,38 @@
}
EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff);
+int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev,
+ const u8 request, const u8 requesttype,
+ const u16 offset, void *buffer,
+ const u16 buffer_length,
+ const int timeout)
+{
+ int status = 0;
+ unsigned char *tb;
+ u16 off, len, bsize;
+
+ mutex_lock(&rt2x00dev->usb_cache_mutex);
+
+ tb = buffer;
+ off = offset;
+ len = buffer_length;
+ while (len && !status) {
+ bsize = min_t(u16, CSR_CACHE_SIZE, len);
+ status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request,
+ requesttype, off, tb,
+ bsize, timeout);
+
+ tb += bsize;
+ len -= bsize;
+ off += bsize;
+ }
+
+ mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_large_buff);
+
/*
* TX data handlers.
*/