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Remove r257748 by accident.

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This commit is contained in:
Kevin Lo 2013-11-11 10:00:19 +00:00
parent bd4c283d3f
commit 67e73b2b2d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=257958
1 changed files with 25 additions and 6 deletions
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31
sys/dev/usb/wlan/if_run.c
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@ -1180,13 +1180,32 @@ run_write_region_1(struct run_softc *sc, uint16_t reg, const uint8_t *buf,
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
}