From: Stefan Richter Date: Wed, 6 Sep 2006 23:06:00 +0000 (+0200) Subject: ieee1394: sbp2: don't prefer MODE SENSE 10 X-Git-Tag: v2.6.19-rc1~644^2~8 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=98e238cd42be6c0852da519303cf0182690f8d9f;p=linux-2.6 ieee1394: sbp2: don't prefer MODE SENSE 10 In the old days, sbp2 used to coerce all MODE SENSE commands into the 10 bytes version. When all command set conversions were removed from sbp2 several months ago, sdev->use_10_for_ms = 1 was added. Meaning, higher SCSI layers preferred the 10 bytes version but would try the 6 bytes version if the former failed. Recently, a problem with the 10 bytes version was discovered. An Initio INIC-1530 firmware accepted the 10 bytes version but replied with bogus data, showing the HDD incorrectly as write-protected. Since RBC actually mandates MODE SENSE (6), I checked which version was sent by Windows XP and Mac OS X 10.3 to an SBP-2 target hosted by Linux --- it was the 6 bytes version. (Exception: OS X sent the 10 bytes version to an MMC target. RBC and SBC got MODE SENSE (6).) Therefore, drop the use_10_for_ms flag from sbp2. Now the upper layers will try MODE SENSE (6) before MODE SENSE (10) on all SBP-2 devices. Signed-off-by: Stefan Richter --- diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index 017259cc34..f192596329 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -2528,7 +2528,6 @@ static int sbp2scsi_slave_configure(struct scsi_device *sdev) blk_queue_dma_alignment(sdev->request_queue, (512 - 1)); sdev->use_10_for_rw = 1; - sdev->use_10_for_ms = 1; if (sdev->type == TYPE_DISK && scsi_id->workarounds & SBP2_WORKAROUND_MODE_SENSE_8)