Commit ce35a81a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] sd: udev accessing an uninitialized scsi_disk field results in a crash
  [SCSI] st: A MTIOCTOP/MTWEOF within the early warning will cause the file number to be incorrect
  [SCSI] qla4xxx: bug fixes
  [SCSI] Fix scsi_add_device() for async scanning
parents 259886a7 017f2e37
......@@ -418,7 +418,6 @@ struct scsi_qla_host {
* concurrently.
*/
struct mutex mbox_sem;
wait_queue_head_t mailbox_wait_queue;
/* temporary mailbox status registers */
volatile uint8_t mbox_status_count;
......
......@@ -76,4 +76,5 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host * ha,
extern int ql4xextended_error_logging;
extern int ql4xdiscoverywait;
extern int ql4xdontresethba;
extern int ql4_mod_unload;
#endif /* _QLA4x_GBL_H */
......@@ -958,25 +958,25 @@ static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
return status;
}
int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
int ql4xxx_lock_drvr_wait(struct scsi_qla_host *ha)
{
#define QL4_LOCK_DRVR_WAIT 300
#define QL4_LOCK_DRVR_SLEEP 100
#define QL4_LOCK_DRVR_WAIT 30
#define QL4_LOCK_DRVR_SLEEP 1
int drvr_wait = QL4_LOCK_DRVR_WAIT;
while (drvr_wait) {
if (ql4xxx_lock_drvr(a) == 0) {
msleep(QL4_LOCK_DRVR_SLEEP);
if (ql4xxx_lock_drvr(ha) == 0) {
ssleep(QL4_LOCK_DRVR_SLEEP);
if (drvr_wait) {
DEBUG2(printk("scsi%ld: %s: Waiting for "
"Global Init Semaphore...n",
a->host_no,
__func__));
"Global Init Semaphore(%d)...n",
ha->host_no,
__func__, drvr_wait));
}
drvr_wait -= QL4_LOCK_DRVR_SLEEP;
} else {
DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
"acquired.n", a->host_no, __func__));
"acquired.n", ha->host_no, __func__));
return QLA_SUCCESS;
}
}
......
......@@ -433,7 +433,6 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
readl(&ha->reg->mailbox[i]);
set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
wake_up(&ha->mailbox_wait_queue);
}
} else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
/* Immediately process the AENs that don't require much work.
......@@ -686,7 +685,8 @@ irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id)
&ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
if (!ql4_mod_unload)
set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
break;
} else if (intr_status & INTR_PENDING) {
......
......@@ -29,18 +29,30 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
u_long wait_count;
uint32_t intr_status;
unsigned long flags = 0;
DECLARE_WAITQUEUE(wait, current);
mutex_lock(&ha->mbox_sem);
/* Mailbox code active */
set_bit(AF_MBOX_COMMAND, &ha->flags);
/* Make sure that pointers are valid */
if (!mbx_cmd || !mbx_sts) {
DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
"pointer\n", ha->host_no, __func__));
goto mbox_exit;
return status;
}
/* Mailbox code active */
wait_count = MBOX_TOV * 100;
while (wait_count--) {
mutex_lock(&ha->mbox_sem);
if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
set_bit(AF_MBOX_COMMAND, &ha->flags);
mutex_unlock(&ha->mbox_sem);
break;
}
mutex_unlock(&ha->mbox_sem);
if (!wait_count) {
DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
ha->host_no, __func__));
return status;
}
msleep(10);
}
/* To prevent overwriting mailbox registers for a command that has
......@@ -73,8 +85,6 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait for completion */
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&ha->mailbox_wait_queue, &wait);
/*
* If we don't want status, don't wait for the mailbox command to
......@@ -83,8 +93,6 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
*/
if (outCount == 0) {
status = QLA_SUCCESS;
set_current_state(TASK_RUNNING);
remove_wait_queue(&ha->mailbox_wait_queue, &wait);
goto mbox_exit;
}
/* Wait for command to complete */
......@@ -108,8 +116,6 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
spin_unlock_irqrestore(&ha->hardware_lock, flags);
msleep(10);
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&ha->mailbox_wait_queue, &wait);
/* Check for mailbox timeout. */
if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
......@@ -155,9 +161,10 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mbox_exit:
mutex_lock(&ha->mbox_sem);
clear_bit(AF_MBOX_COMMAND, &ha->flags);
clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
mutex_unlock(&ha->mbox_sem);
clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
return status;
}
......
......@@ -40,6 +40,8 @@ MODULE_PARM_DESC(ql4xextended_error_logging,
"Option to enable extended error logging, "
"Default is 0 - no logging, 1 - debug logging");
int ql4_mod_unload = 0;
/*
* SCSI host template entry points
*/
......@@ -422,6 +424,9 @@ static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
goto qc_host_busy;
}
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags))
goto qc_host_busy;
spin_unlock_irq(ha->host->host_lock);
srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done);
......@@ -707,16 +712,12 @@ static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
return stat;
}
/**
* qla4xxx_soft_reset - performs soft reset.
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_soft_reset(struct scsi_qla_host *ha)
static void qla4xxx_hw_reset(struct scsi_qla_host *ha)
{
uint32_t max_wait_time;
unsigned long flags = 0;
int status = QLA_ERROR;
uint32_t ctrl_status;
unsigned long flags = 0;
DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
spin_lock_irqsave(&ha->hardware_lock, flags);
......@@ -733,6 +734,20 @@ int qla4xxx_soft_reset(struct scsi_qla_host *ha)
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
/**
* qla4xxx_soft_reset - performs soft reset.
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_soft_reset(struct scsi_qla_host *ha)
{
uint32_t max_wait_time;
unsigned long flags = 0;
int status = QLA_ERROR;
uint32_t ctrl_status;
qla4xxx_hw_reset(ha);
/* Wait until the Network Reset Intr bit is cleared */
max_wait_time = RESET_INTR_TOV;
......@@ -966,10 +981,12 @@ static void qla4xxx_do_dpc(struct work_struct *work)
struct scsi_qla_host *ha =
container_of(work, struct scsi_qla_host, dpc_work);
struct ddb_entry *ddb_entry, *dtemp;
int status = QLA_ERROR;
DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
"flags = 0x%08lx, dpc_flags = 0x%08lx\n",
ha->host_no, __func__, ha->flags, ha->dpc_flags));
"flags = 0x%08lx, dpc_flags = 0x%08lx ctrl_stat = 0x%08x\n",
ha->host_no, __func__, ha->flags, ha->dpc_flags,
readw(&ha->reg->ctrl_status)));
/* Initialization not yet finished. Don't do anything yet. */
if (!test_bit(AF_INIT_DONE, &ha->flags))
......@@ -983,31 +1000,28 @@ static void qla4xxx_do_dpc(struct work_struct *work)
test_bit(DPC_RESET_HA, &ha->dpc_flags))
qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
if (test_and_clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
uint8_t wait_time = RESET_INTR_TOV;
unsigned long flags = 0;
qla4xxx_flush_active_srbs(ha);
spin_lock_irqsave(&ha->hardware_lock, flags);
while ((readw(&ha->reg->ctrl_status) &
(CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
if (--wait_time == 0)
break;
spin_unlock_irqrestore(&ha->hardware_lock,
flags);
msleep(1000);
spin_lock_irqsave(&ha->hardware_lock, flags);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (wait_time == 0)
DEBUG2(printk("scsi%ld: %s: SR|FSR "
"bit not cleared-- resetting\n",
ha->host_no, __func__));
qla4xxx_flush_active_srbs(ha);
if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
status = qla4xxx_initialize_adapter(ha,
PRESERVE_DDB_LIST);
}
clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
if (status == QLA_SUCCESS)
qla4xxx_enable_intrs(ha);
}
}
......@@ -1062,7 +1076,7 @@ static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
/* Issue Soft Reset to put firmware in unknown state */
if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS)
qla4xxx_soft_reset(ha);
qla4xxx_hw_reset(ha);
/* Remove timer thread, if present */
if (ha->timer_active)
......@@ -1198,7 +1212,6 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
INIT_LIST_HEAD(&ha->free_srb_q);
mutex_init(&ha->mbox_sem);
init_waitqueue_head(&ha->mailbox_wait_queue);
spin_lock_init(&ha->hardware_lock);
......@@ -1665,6 +1678,7 @@ no_srp_cache:
static void __exit qla4xxx_module_exit(void)
{
ql4_mod_unload = 1;
pci_unregister_driver(&qla4xxx_pci_driver);
iscsi_unregister_transport(&qla4xxx_iscsi_transport);
kmem_cache_destroy(srb_cachep);
......
......@@ -5,4 +5,4 @@
* See LICENSE.qla4xxx for copyright and licensing details.
*/
#define QLA4XXX_DRIVER_VERSION "5.00.07-k"
#define QLA4XXX_DRIVER_VERSION "5.00.07-k1"
......@@ -1453,6 +1453,12 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
struct device *parent = &shost->shost_gendev;
struct scsi_target *starget;
if (strncmp(scsi_scan_type, "none", 4) == 0)
return ERR_PTR(-ENODEV);
if (!shost->async_scan)
scsi_complete_async_scans();
starget = scsi_alloc_target(parent, channel, id);
if (!starget)
return ERR_PTR(-ENOMEM);
......
......@@ -1647,16 +1647,6 @@ static int sd_probe(struct device *dev)
if (error)
goto out_put;
class_device_initialize(&sdkp->cdev);
sdkp->cdev.dev = &sdp->sdev_gendev;
sdkp->cdev.class = &sd_disk_class;
strncpy(sdkp->cdev.class_id, sdp->sdev_gendev.bus_id, BUS_ID_SIZE);
if (class_device_add(&sdkp->cdev))
goto out_put;
get_device(&sdp->sdev_gendev);
sdkp->device = sdp;
sdkp->driver = &sd_template;
sdkp->disk = gd;
......@@ -1670,6 +1660,16 @@ static int sd_probe(struct device *dev)
sdp->timeout = SD_MOD_TIMEOUT;
}
class_device_initialize(&sdkp->cdev);
sdkp->cdev.dev = &sdp->sdev_gendev;
sdkp->cdev.class = &sd_disk_class;
strncpy(sdkp->cdev.class_id, sdp->sdev_gendev.bus_id, BUS_ID_SIZE);
if (class_device_add(&sdkp->cdev))
goto out_put;
get_device(&sdp->sdev_gendev);
gd->major = sd_major((index & 0xf0) >> 4);
gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
gd->minors = 16;
......
......@@ -2816,15 +2816,18 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
if (cmd_in == MTWEOF &&
cmdstatp->have_sense &&
(cmdstatp->flags & SENSE_EOM) &&
(cmdstatp->sense_hdr.sense_key == NO_SENSE ||
cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) &&
undone == 0) {
ioctl_result = 0; /* EOF written successfully at EOM */
if (fileno >= 0)
fileno++;
(cmdstatp->flags & SENSE_EOM)) {
if (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) {
ioctl_result = 0; /* EOF(s) written successfully at EOM */
STps->eof = ST_NOEOF;
} else { /* Writing EOF(s) failed */
if (fileno >= 0)
fileno -= undone;
if (undone < arg)
STps->eof = ST_NOEOF;
}
STps->drv_file = fileno;
STps->eof = ST_NOEOF;
} else if ((cmd_in == MTFSF) || (cmd_in == MTFSFM)) {
if (fileno >= 0)
STps->drv_file = fileno - undone;
......
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