11 small fixes, 9 in drivers of which the ufs one is the most critical.
The 2 core patches are an obvious cleanup with pktcdvd and a minor
speedup to error handling.
The patch is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
The short changelog is:
Hannes Reinecke (1):
scsi: core: scsi_error: Do not queue pointless abort workqueue functions
Jason Yan (1):
scsi: hisi_sas: Fix tag freeing for reserved tags
John Garry (1):
scsi: scsi_debug: Delete unreachable code in inquiry_vpd_b0()
Lukas Bulwahn (1):
scsi: core: Remove leftovers due to pktcdvd being removed
Michael Kelley (1):
scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM
Peter Wang (1):
scsi: ufs: core: WLUN suspend SSU/enter hibern8 fail recovery
Shin'ichiro Kawasaki (1):
scsi: mpi3mr: Refer CONFIG_SCSI_MPI3MR in Makefile
Sreekanth Reddy (2):
scsi: mpi3mr: Remove usage of dma_get_required_mask() API
scsi: mpt3sas: Remove usage of dma_get_required_mask() API
Wenchao Hao (1):
scsi: iscsi: Fix multiple iSCSI session unbind events sent to userspace
Xingui Yang (1):
scsi: libsas: Grab the ATA port lock in sas_ata_device_link_abort()
And the diffstat:
drivers/scsi/hisi_sas/hisi_sas_main.c | 2 +-
drivers/scsi/libsas/sas_ata.c | 3 +++
drivers/scsi/mpi3mr/Makefile | 2 +-
drivers/scsi/mpi3mr/mpi3mr_fw.c | 3 +--
drivers/scsi/mpt3sas/mpt3sas_base.c | 3 +--
drivers/scsi/scsi_debug.c | 2 --
drivers/scsi/scsi_error.c | 5 ++++
drivers/scsi/scsi_lib.c | 8 ------
drivers/scsi/scsi_transport_iscsi.c | 50 +++++++++++++++++++++++++++++++----
drivers/scsi/storvsc_drv.c | 3 +++
drivers/ufs/core/ufshcd.c | 26 ++++++++++++++++++
include/scsi/scsi_transport_iscsi.h | 9 +++++++
12 files changed, 95 insertions(+), 21 deletions(-)
With full diff below.
James
---
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 41ba22f6c7f0..e9c2d306ed87 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -162,7 +162,7 @@ static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
{
if (hisi_hba->hw->slot_index_alloc ||
- slot_idx >= HISI_SAS_UNRESERVED_IPTT) {
+ slot_idx < HISI_SAS_RESERVED_IPTT) {
spin_lock(&hisi_hba->lock);
hisi_sas_slot_index_clear(hisi_hba, slot_idx);
spin_unlock(&hisi_hba->lock);
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 1ccce706167a..5e80225b5308 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -889,7 +889,9 @@ void sas_ata_device_link_abort(struct domain_device *device, bool force_reset)
{
struct ata_port *ap = device->sata_dev.ap;
struct ata_link *link = &ap->link;
+ unsigned long flags;
+ spin_lock_irqsave(ap->lock, flags);
device->sata_dev.fis[2] = ATA_ERR | ATA_DRDY; /* tf status */
device->sata_dev.fis[3] = ATA_ABORTED; /* tf error */
@@ -897,6 +899,7 @@ void sas_ata_device_link_abort(struct domain_device *device, bool force_reset)
if (force_reset)
link->eh_info.action |= ATA_EH_RESET;
ata_link_abort(link);
+ spin_unlock_irqrestore(ap->lock, flags);
}
EXPORT_SYMBOL_GPL(sas_ata_device_link_abort);
diff --git a/drivers/scsi/mpi3mr/Makefile b/drivers/scsi/mpi3mr/Makefile
index ef86ca46646b..3bf8cf34e1c3 100644
--- a/drivers/scsi/mpi3mr/Makefile
+++ b/drivers/scsi/mpi3mr/Makefile
@@ -1,5 +1,5 @@
# mpi3mr makefile
-obj-m += mpi3mr.o
+obj-$(CONFIG_SCSI_MPI3MR) += mpi3mr.o
mpi3mr-y += mpi3mr_os.o \
mpi3mr_fw.o \
mpi3mr_app.o \
diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index 0c4aabaefdcc..286a44506578 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -3633,8 +3633,7 @@ int mpi3mr_setup_resources(struct mpi3mr_ioc *mrioc)
int i, retval = 0, capb = 0;
u16 message_control;
u64 dma_mask = mrioc->dma_mask ? mrioc->dma_mask :
- (((dma_get_required_mask(&pdev->dev) > DMA_BIT_MASK(32)) &&
- (sizeof(dma_addr_t) > 4)) ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
+ ((sizeof(dma_addr_t) > 4) ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
if (pci_enable_device_mem(pdev)) {
ioc_err(mrioc, "pci_enable_device_mem: failed\n");
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 4e981ccaac41..69061545d9d2 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2992,8 +2992,7 @@ _base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
struct sysinfo s;
u64 coherent_dma_mask, dma_mask;
- if (ioc->is_mcpu_endpoint || sizeof(dma_addr_t) == 4 ||
- dma_get_required_mask(&pdev->dev) <= DMA_BIT_MASK(32)) {
+ if (ioc->is_mcpu_endpoint || sizeof(dma_addr_t) == 4) {
ioc->dma_mask = 32;
coherent_dma_mask = dma_mask = DMA_BIT_MASK(32);
/* Set 63 bit DMA mask for all SAS3 and SAS35 controllers */
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index cc6953809a24..8553277effb3 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -1511,8 +1511,6 @@ static int inquiry_vpd_b0(unsigned char *arr)
put_unaligned_be64(sdebug_write_same_length, &arr[32]);
return 0x3c; /* Mandatory page length for Logical Block Provisioning */
-
- return sizeof(vpdb0_data);
}
/* Block device characteristics VPD page (SBC-3) */
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index a7960ad2d386..2aa2c2aee6e7 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -231,6 +231,11 @@ scsi_abort_command(struct scsi_cmnd *scmd)
struct Scsi_Host *shost = sdev->host;
unsigned long flags;
+ if (!shost->hostt->eh_abort_handler) {
+ /* No abort handler, fail command directly */
+ return FAILED;
+ }
+
if (scmd->eh_eflags & SCSI_EH_ABORT_SCHEDULED) {
/*
* Retry after abort failed, escalate to next level.
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 9ed1ebcb7443..d74536d4cc94 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2018,14 +2018,6 @@ struct scsi_device *scsi_device_from_queue(struct request_queue *q)
return sdev;
}
-/*
- * pktcdvd should have been integrated into the SCSI layers, but for historical
- * reasons like the old IDE driver it isn't. This export allows it to safely
- * probe if a given device is a SCSI one and only attach to that.
- */
-#ifdef CONFIG_CDROM_PKTCDVD_MODULE
-EXPORT_SYMBOL_GPL(scsi_device_from_queue);
-#endif
/**
* scsi_block_requests - Utility function used by low-level drivers to prevent
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 13cfd3e317cc..b9b97300e3b3 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1677,6 +1677,13 @@ static const char *iscsi_session_state_name(int state)
return name;
}
+static char *iscsi_session_target_state_name[] = {
+ [ISCSI_SESSION_TARGET_UNBOUND] = "UNBOUND",
+ [ISCSI_SESSION_TARGET_ALLOCATED] = "ALLOCATED",
+ [ISCSI_SESSION_TARGET_SCANNED] = "SCANNED",
+ [ISCSI_SESSION_TARGET_UNBINDING] = "UNBINDING",
+};
+
int iscsi_session_chkready(struct iscsi_cls_session *session)
{
int err;
@@ -1786,9 +1793,13 @@ static int iscsi_user_scan_session(struct device *dev, void *data)
if ((scan_data->channel == SCAN_WILD_CARD ||
scan_data->channel == 0) &&
(scan_data->id == SCAN_WILD_CARD ||
- scan_data->id == id))
+ scan_data->id == id)) {
scsi_scan_target(&session->dev, 0, id,
scan_data->lun, scan_data->rescan);
+ spin_lock_irqsave(&session->lock, flags);
+ session->target_state = ISCSI_SESSION_TARGET_SCANNED;
+ spin_unlock_irqrestore(&session->lock, flags);
+ }
}
user_scan_exit:
@@ -1961,31 +1972,41 @@ static void __iscsi_unbind_session(struct work_struct *work)
struct iscsi_cls_host *ihost = shost->shost_data;
unsigned long flags;
unsigned int target_id;
+ bool remove_target = true;
ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n");
/* Prevent new scans and make sure scanning is not in progress */
mutex_lock(&ihost->mutex);
spin_lock_irqsave(&session->lock, flags);
- if (session->target_id == ISCSI_MAX_TARGET) {
+ if (session->target_state == ISCSI_SESSION_TARGET_ALLOCATED) {
+ remove_target = false;
+ } else if (session->target_state != ISCSI_SESSION_TARGET_SCANNED) {
spin_unlock_irqrestore(&session->lock, flags);
mutex_unlock(&ihost->mutex);
- goto unbind_session_exit;
+ ISCSI_DBG_TRANS_SESSION(session,
+ "Skipping target unbinding: Session is unbound/unbinding.\n");
+ return;
}
+ session->target_state = ISCSI_SESSION_TARGET_UNBINDING;
target_id = session->target_id;
session->target_id = ISCSI_MAX_TARGET;
spin_unlock_irqrestore(&session->lock, flags);
mutex_unlock(&ihost->mutex);
- scsi_remove_target(&session->dev);
+ if (remove_target)
+ scsi_remove_target(&session->dev);
if (session->ida_used)
ida_free(&iscsi_sess_ida, target_id);
-unbind_session_exit:
iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION);
ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n");
+
+ spin_lock_irqsave(&session->lock, flags);
+ session->target_state = ISCSI_SESSION_TARGET_UNBOUND;
+ spin_unlock_irqrestore(&session->lock, flags);
}
static void __iscsi_destroy_session(struct work_struct *work)
@@ -2062,6 +2083,9 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
session->ida_used = true;
} else
session->target_id = target_id;
+ spin_lock_irqsave(&session->lock, flags);
+ session->target_state = ISCSI_SESSION_TARGET_ALLOCATED;
+ spin_unlock_irqrestore(&session->lock, flags);
dev_set_name(&session->dev, "session%u", session->sid);
err = device_add(&session->dev);
@@ -4369,6 +4393,19 @@ iscsi_session_attr(def_taskmgmt_tmo, ISCSI_PARAM_DEF_TASKMGMT_TMO, 0);
iscsi_session_attr(discovery_parent_idx, ISCSI_PARAM_DISCOVERY_PARENT_IDX, 0);
iscsi_session_attr(discovery_parent_type, ISCSI_PARAM_DISCOVERY_PARENT_TYPE, 0);
+static ssize_t
+show_priv_session_target_state(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
+
+ return sysfs_emit(buf, "%s\n",
+ iscsi_session_target_state_name[session->target_state]);
+}
+
+static ISCSI_CLASS_ATTR(priv_sess, target_state, S_IRUGO,
+ show_priv_session_target_state, NULL);
+
static ssize_t
show_priv_session_state(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -4471,6 +4508,7 @@ static struct attribute *iscsi_session_attrs[] = {
&dev_attr_sess_boot_target.attr,
&dev_attr_priv_sess_recovery_tmo.attr,
&dev_attr_priv_sess_state.attr,
+ &dev_attr_priv_sess_target_state.attr,
&dev_attr_priv_sess_creator.attr,
&dev_attr_sess_chap_out_idx.attr,
&dev_attr_sess_chap_in_idx.attr,
@@ -4584,6 +4622,8 @@ static umode_t iscsi_session_attr_is_visible(struct kobject *kobj,
return S_IRUGO | S_IWUSR;
else if (attr == &dev_attr_priv_sess_state.attr)
return S_IRUGO;
+ else if (attr == &dev_attr_priv_sess_target_state.attr)
+ return S_IRUGO;
else if (attr == &dev_attr_priv_sess_creator.attr)
return S_IRUGO;
else if (attr == &dev_attr_priv_sess_target_id.attr)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index d7a84c0bfaeb..22705eb781b0 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1823,6 +1823,9 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
ret = storvsc_do_io(dev, cmd_request, get_cpu());
put_cpu();
+ if (ret)
+ scsi_dma_unmap(scmnd);
+
if (ret == -EAGAIN) {
/* no more space */
ret = SCSI_MLQUEUE_DEVICE_BUSY;
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index e18c9f4463ec..bda61be5f035 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -6056,6 +6056,14 @@ void ufshcd_schedule_eh_work(struct ufs_hba *hba)
}
}
+static void ufshcd_force_error_recovery(struct ufs_hba *hba)
+{
+ spin_lock_irq(hba->host->host_lock);
+ hba->force_reset = true;
+ ufshcd_schedule_eh_work(hba);
+ spin_unlock_irq(hba->host->host_lock);
+}
+
static void ufshcd_clk_scaling_allow(struct ufs_hba *hba, bool allow)
{
down_write(&hba->clk_scaling_lock);
@@ -9083,6 +9091,15 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
if (!hba->dev_info.b_rpm_dev_flush_capable) {
ret = ufshcd_set_dev_pwr_mode(hba, req_dev_pwr_mode);
+ if (ret && pm_op != UFS_SHUTDOWN_PM) {
+ /*
+ * If return err in suspend flow, IO will hang.
+ * Trigger error handler and break suspend for
+ * error recovery.
+ */
+ ufshcd_force_error_recovery(hba);
+ ret = -EBUSY;
+ }
if (ret)
goto enable_scaling;
}
@@ -9094,6 +9111,15 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
*/
check_for_bkops = !ufshcd_is_ufs_dev_deepsleep(hba);
ret = ufshcd_link_state_transition(hba, req_link_state, check_for_bkops);
+ if (ret && pm_op != UFS_SHUTDOWN_PM) {
+ /*
+ * If return err in suspend flow, IO will hang.
+ * Trigger error handler and break suspend for
+ * error recovery.
+ */
+ ufshcd_force_error_recovery(hba);
+ ret = -EBUSY;
+ }
if (ret)
goto set_dev_active;
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index cab52b0f11d0..34c03707fb6e 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -236,6 +236,14 @@ enum {
ISCSI_SESSION_FREE,
};
+enum {
+ ISCSI_SESSION_TARGET_UNBOUND,
+ ISCSI_SESSION_TARGET_ALLOCATED,
+ ISCSI_SESSION_TARGET_SCANNED,
+ ISCSI_SESSION_TARGET_UNBINDING,
+ ISCSI_SESSION_TARGET_MAX,
+};
+
#define ISCSI_MAX_TARGET -1
struct iscsi_cls_session {
@@ -264,6 +272,7 @@ struct iscsi_cls_session {
*/
pid_t creator;
int state;
+ int target_state; /* session target bind state */
int sid; /* session id */
void *dd_data; /* LLD private data */
struct device dev; /* sysfs transport/container device */
