Author: kevlo
Date: Mon Nov 11 10:00:19 2013
New Revision: 257958
URL: http://svnweb.freebsd.org/changeset/base/257958
Log:
Remove r257748 by accident.
Modified:
head/sys/dev/usb/wlan/if_run.c
Modified: head/sys/dev/usb/wlan/if_run.c
==============================================================================
--- head/sys/dev/usb/wlan/if_run.c Mon Nov 11 09:48:57 2013
(r257957)
+++ head/sys/dev/usb/wlan/if_run.c Mon Nov 11 10:00:19 2013
(r257958)
@@ -1180,13 +1180,32 @@ run_write_region_1(struct run_softc *sc,
return (error);
#else
usb_device_request_t req;
+ int error = 0;
- req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
- req.bRequest = RT2870_WRITE_REGION_1;
- USETW(req.wValue, 0);
- USETW(req.wIndex, reg);
- USETW(req.wLength, len);
- return (run_do_request(sc, &req, buf));
+ /*
+ * NOTE: It appears the WRITE_REGION_1 command cannot be
+ * passed a huge amount of data, which will crash the
+ * firmware. Limit amount of data passed to 64-bytes at a
+ * time.
+ */
+ while (len > 0) {
+ int delta = 64;
+ if (delta > len)
+ delta = len;
+
+ req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+ req.bRequest = RT2870_WRITE_REGION_1;
+ USETW(req.wValue, 0);
+ USETW(req.wIndex, reg);
+ USETW(req.wLength, delta);
+ error = run_do_request(sc, &req, __DECONST(uint8_t *, buf));
+ if (error != 0)
+ break;
+ reg += delta;
+ buf += delta;
+ len -= delta;
+ }
+ return (error);
#endif
}
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