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Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

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* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] scsi_transport_spi: fix domain validation failure from incorrect width setting
This commit is contained in:
Linus Torvalds 2007-09-25 11:19:03 -07:00
commit 4aee491cd4
1 changed files with 22 additions and 6 deletions
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28
drivers/scsi/scsi_transport_spi.c
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@ -787,10 +787,12 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
struct scsi_target *starget = sdev->sdev_target;
struct Scsi_Host *shost = sdev->host;
int len = sdev->inquiry_len;
int min_period = spi_min_period(starget);
int max_width = spi_max_width(starget);
/* first set us up for narrow async */
DV_SET(offset, 0);
DV_SET(width, 0);
if (spi_dv_device_compare_inquiry(sdev, buffer, buffer, DV_LOOPS)
!= SPI_COMPARE_SUCCESS) {
starget_printk(KERN_ERR, starget, "Domain Validation Initial Inquiry Failed\n");
@ -798,9 +800,13 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
return;
}
if (!scsi_device_wide(sdev)) {
spi_max_width(starget) = 0;
max_width = 0;
}
/* test width */
if (i->f->set_width && spi_max_width(starget) &&
scsi_device_wide(sdev)) {
if (i->f->set_width && max_width) {
i->f->set_width(starget, 1);
if (spi_dv_device_compare_inquiry(sdev, buffer,
@ -809,6 +815,11 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
!= SPI_COMPARE_SUCCESS) {
starget_printk(KERN_ERR, starget, "Wide Transfers Fail\n");
i->f->set_width(starget, 0);
/* Make sure we don't force wide back on by asking
* for a transfer period that requires it */
max_width = 0;
if (min_period < 10)
min_period = 10;
}
}
@ -828,7 +839,8 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
/* now set up to the maximum */
DV_SET(offset, spi_max_offset(starget));
DV_SET(period, spi_min_period(starget));
DV_SET(period, min_period);
/* try QAS requests; this should be harmless to set if the
* target supports it */
if (scsi_device_qas(sdev)) {
@ -837,14 +849,14 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
DV_SET(qas, 0);
}
if (scsi_device_ius(sdev) && spi_min_period(starget) < 9) {
if (scsi_device_ius(sdev) && min_period < 9) {
/* This u320 (or u640). Set IU transfers */
DV_SET(iu, 1);
/* Then set the optional parameters */
DV_SET(rd_strm, 1);
DV_SET(wr_flow, 1);
DV_SET(rti, 1);
if (spi_min_period(starget) == 8)
if (min_period == 8)
DV_SET(pcomp_en, 1);
} else {
DV_SET(iu, 0);
@ -862,6 +874,10 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
} else {
DV_SET(dt, 1);
}
/* set width last because it will pull all the other
* parameters down to required values */
DV_SET(width, max_width);
/* Do the read only INQUIRY tests */
spi_dv_retrain(sdev, buffer, buffer + sdev->inquiry_len,
spi_dv_device_compare_inquiry);