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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Browse source 
Pull s390 updates from Martin Schwidefsky:
 "The new features and main improvements in this merge for v4.9

   - Support for the UBSAN sanitizer

   - Set HAVE_EFFICIENT_UNALIGNED_ACCESS, it improves the code in some
     places

   - Improvements for the in-kernel fpu code, in particular the overhead
     for multiple consecutive in kernel fpu users is recuded

   - Add a SIMD implementation for the RAID6 gen and xor operations

   - Add RAID6 recovery based on the XC instruction

   - The PCI DMA flush logic has been improved to increase the speed of
     the map / unmap operations

   - The time synchronization code has seen some updates

  And bug fixes all over the place"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/con3270: fix insufficient space padding
  s390/con3270: fix use of uninitialised data
  MAINTAINERS: update DASD maintainer
  s390/cio: fix accidental interrupt enabling during resume
  s390/dasd: add missing \n to end of dev_err messages
  s390/config: Enable config options for Docker
  s390/dasd: make query host access interruptible
  s390/dasd: fix panic during offline processing
  s390/dasd: fix hanging offline processing
  s390/pci_dma: improve lazy flush for unmap
  s390/pci_dma: split dma_update_trans
  s390/pci_dma: improve map_sg
  s390/pci_dma: simplify dma address calculation
  s390/pci_dma: remove dma address range check
  iommu/s390: simplify registration of I/O address translation parameters
  s390: migrate exception table users off module.h and onto extable.h
  s390: export header for CLP ioctl
  s390/vmur: fix irq pointer dereference in int handler
  s390/dasd: add missing KOBJ_CHANGE event for unformatted devices
  s390: enable UBSAN
  ...
This commit is contained in:
Linus Torvalds 2016-10-04 14:05:52 -07:00
commit e46cae4418
66 changed files with 1535 additions and 1368 deletions
Download patch file Download diff file Expand all files Collapse all files

39
drivers/s390/block/dasd.c
View file

@ -212,16 +212,6 @@ static int dasd_state_known_to_new(struct dasd_device *device)
{
/* Disable extended error reporting for this device. */
dasd_eer_disable(device);
/* Forget the discipline information. */
if (device->discipline) {
if (device->discipline->uncheck_device)
device->discipline->uncheck_device(device);
module_put(device->discipline->owner);
}
device->discipline = NULL;
if (device->base_discipline)
module_put(device->base_discipline->owner);
device->base_discipline = NULL;
device->state = DASD_STATE_NEW;
if (device->block)
@ -336,6 +326,7 @@ static int dasd_state_basic_to_ready(struct dasd_device *device)
{
int rc;
struct dasd_block *block;
struct gendisk *disk;
rc = 0;
block = device->block;
@ -346,6 +337,9 @@ static int dasd_state_basic_to_ready(struct dasd_device *device)
if (rc) {
if (rc != -EAGAIN) {
device->state = DASD_STATE_UNFMT;
disk = device->block->gdp;
kobject_uevent(&disk_to_dev(disk)->kobj,
KOBJ_CHANGE);
goto out;
}
return rc;
@ -2273,6 +2267,15 @@ static int _dasd_sleep_on(struct dasd_ccw_req *maincqr, int interruptible)
cqr->intrc = -ENOLINK;
continue;
}
/*
* Don't try to start requests if device is in
* offline processing, it might wait forever
*/
if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) {
cqr->status = DASD_CQR_FAILED;
cqr->intrc = -ENODEV;
continue;
}
/*
* Don't try to start requests if device is stopped
* except path verification requests
@ -3364,6 +3367,22 @@ int dasd_generic_probe(struct ccw_device *cdev,
}
EXPORT_SYMBOL_GPL(dasd_generic_probe);
void dasd_generic_free_discipline(struct dasd_device *device)
{
/* Forget the discipline information. */
if (device->discipline) {
if (device->discipline->uncheck_device)
device->discipline->uncheck_device(device);
module_put(device->discipline->owner);
device->discipline = NULL;
}
if (device->base_discipline) {
module_put(device->base_discipline->owner);
device->base_discipline = NULL;
}
}
EXPORT_SYMBOL_GPL(dasd_generic_free_discipline);
/*
* This will one day be called from a global not_oper handler.
* It is also used by driver_unregister during module unload.

1
drivers/s390/block/dasd_devmap.c
View file

@ -617,6 +617,7 @@ dasd_delete_device(struct dasd_device *device)
/* Wait for reference counter to drop to zero. */
wait_event(dasd_delete_wq, atomic_read(&device->ref_count) == 0);
dasd_generic_free_discipline(device);
/* Disconnect dasd_device structure from ccw_device structure. */
cdev = device->cdev;
device->cdev = NULL;

2
drivers/s390/block/dasd_eckd.c
View file

@ -5201,7 +5201,7 @@ static int dasd_eckd_query_host_access(struct dasd_device *device,
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on(cqr);
rc = dasd_sleep_on_interruptible(cqr);
if (rc == 0) {
*data = *host_access;
} else {

4
drivers/s390/block/dasd_erp.c
View file

@ -169,12 +169,12 @@ dasd_log_sense(struct dasd_ccw_req *cqr, struct irb *irb)
device = cqr->startdev;
if (cqr->intrc == -ETIMEDOUT) {
dev_err(&device->cdev->dev,
"A timeout error occurred for cqr %p", cqr);
"A timeout error occurred for cqr %p\n", cqr);
return;
}
if (cqr->intrc == -ENOLINK) {
dev_err(&device->cdev->dev,
"A transport error occurred for cqr %p", cqr);
"A transport error occurred for cqr %p\n", cqr);
return;
}
/* dump sense data */

1
drivers/s390/block/dasd_int.h
View file

@ -725,6 +725,7 @@ void dasd_block_clear_timer(struct dasd_block *);
int dasd_cancel_req(struct dasd_ccw_req *);
int dasd_flush_device_queue(struct dasd_device *);
int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *);
void dasd_generic_free_discipline(struct dasd_device *);
void dasd_generic_remove (struct ccw_device *cdev);
int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
int dasd_generic_set_offline (struct ccw_device *cdev);

11
drivers/s390/char/con3270.c
View file

@ -124,7 +124,12 @@ con3270_create_status(struct con3270 *cp)
static void
con3270_update_string(struct con3270 *cp, struct string *s, int nr)
{
if (s->len >= cp->view.cols - 5)
if (s->len < 4) {
/* This indicates a bug, but printing a warning would
* cause a deadlock. */
return;
}
if (s->string[s->len - 4] != TO_RA)
return;
raw3270_buffer_address(cp->view.dev, s->string + s->len - 3,
cp->view.cols * (nr + 1));
@ -460,11 +465,11 @@ con3270_cline_end(struct con3270 *cp)
cp->cline->len + 4 : cp->view.cols;
s = con3270_alloc_string(cp, size);
memcpy(s->string, cp->cline->string, cp->cline->len);
if (s->len < cp->view.cols - 5) {
if (cp->cline->len < cp->view.cols - 5) {
s->string[s->len - 4] = TO_RA;
s->string[s->len - 1] = 0;
} else {
while (--size > cp->cline->len)
while (--size >= cp->cline->len)
s->string[size] = cp->view.ascebc[' '];
}
/* Replace cline with allocated line s and reset cline. */

11
drivers/s390/char/tape_3590.c
View file

@ -312,15 +312,10 @@ static int tape_3592_ioctl_kekl_set(struct tape_device *device,
return -ENOSYS;
if (!crypt_enabled(device))
return -EUNATCH;
ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL);
if (!ext_kekls)
return -ENOMEM;
if (copy_from_user(ext_kekls, (char __user *)arg, sizeof(*ext_kekls))) {
rc = -EFAULT;
goto out;
}
ext_kekls = memdup_user((char __user *)arg, sizeof(*ext_kekls));
if (IS_ERR(ext_kekls))
return PTR_ERR(ext_kekls);
rc = tape_3592_kekl_set(device, ext_kekls);
out:
kfree(ext_kekls);
return rc;
}

9
drivers/s390/char/vmur.c
View file

@ -306,10 +306,11 @@ static void ur_int_handler(struct ccw_device *cdev, unsigned long intparm,
{
struct urdev *urd;
TRACE("ur_int_handler: intparm=0x%lx cstat=%02x dstat=%02x res=%u\n",
intparm, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat,
irb->scsw.cmd.count);
if (!IS_ERR(irb)) {
TRACE("ur_int_handler: intparm=0x%lx cstat=%02x dstat=%02x res=%u\n",
intparm, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat,
irb->scsw.cmd.count);
}
if (!intparm) {
TRACE("ur_int_handler: unsolicited interrupt\n");
return;

20
drivers/s390/cio/chsc.c
View file

@ -95,12 +95,13 @@ struct chsc_ssd_area {
int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
{
struct chsc_ssd_area *ssd_area;
unsigned long flags;
int ccode;
int ret;
int i;
int mask;
spin_lock_irq(&chsc_page_lock);
spin_lock_irqsave(&chsc_page_lock, flags);
memset(chsc_page, 0, PAGE_SIZE);
ssd_area = chsc_page;
ssd_area->request.length = 0x0010;
@ -144,7 +145,7 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
ssd->fla[i] = ssd_area->fla[i];
}
out:
spin_unlock_irq(&chsc_page_lock);
spin_unlock_irqrestore(&chsc_page_lock, flags);
return ret;
}
@ -832,9 +833,10 @@ int __chsc_do_secm(struct channel_subsystem *css, int enable)
u32 fmt : 4;
u32 : 16;
} __attribute__ ((packed)) *secm_area;
unsigned long flags;
int ret, ccode;
spin_lock_irq(&chsc_page_lock);
spin_lock_irqsave(&chsc_page_lock, flags);
memset(chsc_page, 0, PAGE_SIZE);
secm_area = chsc_page;
secm_area->request.length = 0x0050;
@ -864,7 +866,7 @@ int __chsc_do_secm(struct channel_subsystem *css, int enable)
CIO_CRW_EVENT(2, "chsc: secm failed (rc=%04x)\n",
secm_area->response.code);
out:
spin_unlock_irq(&chsc_page_lock);
spin_unlock_irqrestore(&chsc_page_lock, flags);
return ret;
}
@ -992,6 +994,7 @@ chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv,
int chsc_get_channel_measurement_chars(struct channel_path *chp)
{
unsigned long flags;
int ccode, ret;
struct {
@ -1021,7 +1024,7 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp)
if (!css_chsc_characteristics.scmc || !css_chsc_characteristics.secm)
return -EINVAL;
spin_lock_irq(&chsc_page_lock);
spin_lock_irqsave(&chsc_page_lock, flags);
memset(chsc_page, 0, PAGE_SIZE);
scmc_area = chsc_page;
scmc_area->request.length = 0x0010;
@ -1053,7 +1056,7 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp)
chsc_initialize_cmg_chars(chp, scmc_area->cmcv,
(struct cmg_chars *) &scmc_area->data);
out:
spin_unlock_irq(&chsc_page_lock);
spin_unlock_irqrestore(&chsc_page_lock, flags);
return ret;
}
@ -1134,6 +1137,7 @@ struct css_chsc_char css_chsc_characteristics;
int __init
chsc_determine_css_characteristics(void)
{
unsigned long flags;
int result;
struct {
struct chsc_header request;
@ -1146,7 +1150,7 @@ chsc_determine_css_characteristics(void)
u32 chsc_char[508];
} __attribute__ ((packed)) *scsc_area;
spin_lock_irq(&chsc_page_lock);
spin_lock_irqsave(&chsc_page_lock, flags);
memset(chsc_page, 0, PAGE_SIZE);
scsc_area = chsc_page;
scsc_area->request.length = 0x0010;
@ -1168,7 +1172,7 @@ chsc_determine_css_characteristics(void)
CIO_CRW_EVENT(2, "chsc: scsc failed (rc=%04x)\n",
scsc_area->response.code);
exit:
spin_unlock_irq(&chsc_page_lock);
spin_unlock_irqrestore(&chsc_page_lock, flags);
return result;
}

1
drivers/s390/cio/cio.h
View file

@ -127,7 +127,6 @@ extern int cio_resume (struct subchannel *);
extern int cio_halt (struct subchannel *);
extern int cio_start (struct subchannel *, struct ccw1 *, __u8);
extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8);
extern int cio_cancel (struct subchannel *);
extern int cio_set_options (struct subchannel *, int);
extern int cio_update_schib(struct subchannel *sch);
extern int cio_commit_config(struct subchannel *sch);

2
drivers/s390/scsi/zfcp_aux.c
View file

@ -310,7 +310,7 @@ static int zfcp_setup_adapter_work_queue(struct zfcp_adapter *adapter)
snprintf(name, sizeof(name), "zfcp_q_%s",
dev_name(&adapter->ccw_device->dev));
adapter->work_queue = create_singlethread_workqueue(name);
adapter->work_queue = alloc_ordered_workqueue(name, WQ_MEM_RECLAIM);
if (adapter->work_queue)
return 0;