diff options
| author | Al Viro <viro@ftp.linux.org.uk> | 2006-02-23 02:03:16 +0100 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-02-27 23:31:07 -0600 |
| commit | 6d73c8514da241c6b1b8d710a6294786604d7142 (patch) | |
| tree | 896fdd4d3f2d7094dc75a774f8ae2128d0fcb1c5 | |
| parent | fc25307d06f524d6c04b371b236dc9e62186058c (diff) | |
[SCSI] scsi_lib: fix recognition of cache type of Initio SBP-2 bridges
Regardless what mode page was asked for, Initio INIC-14x0 and
INIC-2430 always return page 6 without mode page headers. Try to
recognise this as a special case in scsi_mode_sense and setting the
mode sense headers accordingly.
Signed-off-by: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 13 | ||||
| -rw-r--r-- | drivers/scsi/sd.c | 6 |
2 files changed, 17 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 1fe4fd83e30..eab303d148d 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1892,8 +1892,16 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, } if(scsi_status_is_good(result)) { - data->header_length = header_length; - if(use_10_for_ms) { + if (unlikely(buffer[0] == 0x86 && buffer[1] == 0x0b && + (modepage == 6 || modepage == 8))) { + /* Initio breakage? */ + header_length = 0; + data->length = 13; + data->medium_type = 0; + data->device_specific = 0; + data->longlba = 0; + data->block_descriptor_length = 0; + } else if(use_10_for_ms) { data->length = buffer[0]*256 + buffer[1] + 2; data->medium_type = buffer[2]; data->device_specific = buffer[3]; @@ -1906,6 +1914,7 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, data->device_specific = buffer[2]; data->block_descriptor_length = buffer[3]; } + data->header_length = header_length; } return result; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 76b4d14c0b3..31c9685ebc5 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1333,6 +1333,12 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname, if (!scsi_status_is_good(res)) goto bad_sense; + if (!data.header_length) { + modepage = 6; + printk(KERN_ERR "%s: missing header in MODE_SENSE response\n", + diskname); + } + /* that went OK, now ask for the proper length */ len = data.length; |