Author: imp
Date: Sat Aug 30 02:13:09 2014
New Revision: 270833
URL: http://svnweb.freebsd.org/changeset/base/270833
Log:
We were returning 20 bytes as the FIS size to send, but only
initializing 16. Initialize all 20 so we don't send garbage in the
Auxiliary register. The SATA standard mandates a 5 dword length for
the Host to Device FIS.
Sponsored by: Netflix
Modified:
head/sys/dev/ahci/ahci.c
Modified: head/sys/dev/ahci/ahci.c
==============================================================================
--- head/sys/dev/ahci/ahci.c Sat Aug 30 02:13:04 2014 (r270832)
+++ head/sys/dev/ahci/ahci.c Sat Aug 30 02:13:09 2014 (r270833)
@@ -2764,7 +2764,7 @@ ahci_setup_fis(device_t dev, struct ahci
struct ahci_channel *ch = device_get_softc(dev);
u_int8_t *fis = &ctp->cfis[0];
- bzero(ctp->cfis, 16);
+ bzero(fis, 20);
fis[0] = 0x27; /* host to device */
fis[1] = (ccb->ccb_h.target_id & 0x0f);
if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
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