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SCSI fixes on 20180119

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One fix for SAS attached SATA CD-ROMs.  It turns out that the libata
 handling of CD devices relies on the SCSI error handler, so disable
 async aborts (which don't start the error handler) for these devices.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "One fix for SAS attached SATA CD-ROMs. It turns out that the libata
  handling of CD devices relies on the SCSI error handler, so disable
  async aborts (which don't start the error handler) for these devices"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: libsas: Disable asynchronous aborts for SATA devices
This commit is contained in:
Linus Torvalds 2018-01-19 15:20:00 -08:00
commit 8dd903d2cf
1 changed files with 15 additions and 2 deletions
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17
drivers/scsi/libsas/sas_scsi_host.c
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@ -486,15 +486,28 @@ static int sas_queue_reset(struct domain_device *dev, int reset_type,
int sas_eh_abort_handler(struct scsi_cmnd *cmd)
{
int res;
int res = TMF_RESP_FUNC_FAILED;
struct sas_task *task = TO_SAS_TASK(cmd);
struct Scsi_Host *host = cmd->device->host;
struct domain_device *dev = cmd_to_domain_dev(cmd);
struct sas_internal *i = to_sas_internal(host->transportt);
unsigned long flags;
if (!i->dft->lldd_abort_task)
return FAILED;
res = i->dft->lldd_abort_task(task);
spin_lock_irqsave(host->host_lock, flags);
/* We cannot do async aborts for SATA devices */
if (dev_is_sata(dev) && !host->host_eh_scheduled) {
spin_unlock_irqrestore(host->host_lock, flags);
return FAILED;
}
spin_unlock_irqrestore(host->host_lock, flags);
if (task)
res = i->dft->lldd_abort_task(task);
else
SAS_DPRINTK("no task to abort\n");
if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE)
return SUCCESS;