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Subject[GIT PULL] s390 patches for 2.6.32-rc4
Hi Linus,

before everybody gets on the plane to the kernel summit in Tokyo,
here are the latest bug fixes for s390 that should go into 2.6.32.

Please pull from 'for-linus' branch of

git://git390.marist.edu/pub/scm/linux-2.6.git for-linus

to receive the following updates:

Andreas Krebbel (1):
[S390] Add highgprs facility to /proc/cpuinfo

Heiko Carstens (1):
[S390] call home support: fix proc handler

Michael Holzheu (3):
[S390] hypfs: Use subcode 6 if subcode 7 is not available
[S390] tape390: Fix request queue handling in block driver
[S390] sclp_vt220 build fix

Peter Oberparleiter (1):
[S390] cio: change misleading console logic

Stefan Haberland (2):
[S390] dasd: fix locking bug
[S390] dasd: use idal for device characteristics

arch/s390/hypfs/hypfs_diag.c | 2 +-
arch/s390/kernel/processor.c | 6 +++---
drivers/s390/block/dasd.c | 13 +++++++++++--
drivers/s390/block/dasd_eckd.c | 8 +++++---
drivers/s390/char/sclp_async.c | 4 ++--
drivers/s390/char/sclp_vt220.c | 30 +++++++++++++++---------------
drivers/s390/char/tape_block.c | 3 ++-
drivers/s390/cio/device.c | 9 ++++-----
8 files changed, 43 insertions(+), 32 deletions(-)

diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 704dd39..77df726 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -438,7 +438,7 @@ static int diag204_probe(void)
}
if (diag204((unsigned long)SUBC_STIB6 |
(unsigned long)INFO_EXT, pages, buf) >= 0) {
- diag204_store_sc = SUBC_STIB7;
+ diag204_store_sc = SUBC_STIB6;
diag204_info_type = INFO_EXT;
goto out;
}
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 802c8ab..0729f36 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -31,9 +31,9 @@ void __cpuinit print_cpu_info(void)

static int show_cpuinfo(struct seq_file *m, void *v)
{
- static const char *hwcap_str[9] = {
+ static const char *hwcap_str[10] = {
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
- "edat", "etf3eh"
+ "edat", "etf3eh", "highgprs"
};
struct _lowcore *lc;
unsigned long n = (unsigned long) v - 1;
@@ -48,7 +48,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
num_online_cpus(), loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ))%100);
seq_puts(m, "features\t: ");
- for (i = 0; i < 9; i++)
+ for (i = 0; i < 10; i++)
if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
seq_printf(m, "%s ", hwcap_str[i]);
seq_puts(m, "\n");
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 53b8c25..aaccc8e 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2533,6 +2533,7 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
{
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
+ unsigned long *idaw;

cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device);

@@ -2546,9 +2547,17 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,

ccw = cqr->cpaddr;
ccw->cmd_code = CCW_CMD_RDC;
- ccw->cda = (__u32)(addr_t)rdc_buffer;
- ccw->count = rdc_buffer_size;
+ if (idal_is_needed(rdc_buffer, rdc_buffer_size)) {
+ idaw = (unsigned long *) (cqr->data);
+ ccw->cda = (__u32)(addr_t) idaw;
+ ccw->flags = CCW_FLAG_IDA;
+ idaw = idal_create_words(idaw, rdc_buffer, rdc_buffer_size);
+ } else {
+ ccw->cda = (__u32)(addr_t) rdc_buffer;
+ ccw->flags = 0;
+ }

+ ccw->count = rdc_buffer_size;
cqr->startdev = device;
cqr->memdev = device;
cqr->expires = 10*HZ;
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 0be7c15..417b97c 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -3216,6 +3216,7 @@ int dasd_eckd_restore_device(struct dasd_device *device)
struct dasd_eckd_characteristics temp_rdc_data;
int is_known, rc;
struct dasd_uid temp_uid;
+ unsigned long flags;

private = (struct dasd_eckd_private *) device->private;

@@ -3228,7 +3229,8 @@ int dasd_eckd_restore_device(struct dasd_device *device)
rc = dasd_eckd_generate_uid(device, &private->uid);
dasd_get_uid(device->cdev, &temp_uid);
if (memcmp(&private->uid, &temp_uid, sizeof(struct dasd_uid)) != 0)
- dev_err(&device->cdev->dev, "The UID of the DASD has changed\n");
+ dev_err(&device->cdev->dev, "The UID of the DASD has "
+ "changed\n");
if (rc)
goto out_err;
dasd_set_uid(device->cdev, &private->uid);
@@ -3256,9 +3258,9 @@ int dasd_eckd_restore_device(struct dasd_device *device)
"device: %s", rc, dev_name(&device->cdev->dev));
goto out_err;
}
- spin_lock(get_ccwdev_lock(device->cdev));
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
memcpy(&private->rdc_data, &temp_rdc_data, sizeof(temp_rdc_data));
- spin_unlock(get_ccwdev_lock(device->cdev));
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);

/* add device to alias management */
dasd_alias_add_device(device);
diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c
index daaec18..a4f68e5 100644
--- a/drivers/s390/char/sclp_async.c
+++ b/drivers/s390/char/sclp_async.c
@@ -62,7 +62,7 @@ static struct notifier_block call_home_panic_nb = {
.priority = INT_MAX,
};

-static int proc_handler_callhome(ctl_table *ctl, int write, struct file *filp,
+static int proc_handler_callhome(struct ctl_table *ctl, int write,
void __user *buffer, size_t *count,
loff_t *ppos)
{
@@ -100,7 +100,7 @@ static struct ctl_table callhome_table[] = {
{
.procname = "callhome",
.mode = 0644,
- .proc_handler = &proc_handler_callhome,
+ .proc_handler = proc_handler_callhome,
},
{ .ctl_name = 0 }
};
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 178724f..b9d2a00 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -705,21 +705,6 @@ out_driver:
}
__initcall(sclp_vt220_tty_init);

-#ifdef CONFIG_SCLP_VT220_CONSOLE
-
-static void
-sclp_vt220_con_write(struct console *con, const char *buf, unsigned int count)
-{
- __sclp_vt220_write((const unsigned char *) buf, count, 1, 1, 0);
-}
-
-static struct tty_driver *
-sclp_vt220_con_device(struct console *c, int *index)
-{
- *index = 0;
- return sclp_vt220_driver;
-}
-
static void __sclp_vt220_flush_buffer(void)
{
unsigned long flags;
@@ -776,6 +761,21 @@ static void sclp_vt220_pm_event_fn(struct sclp_register *reg,
}
}

+#ifdef CONFIG_SCLP_VT220_CONSOLE
+
+static void
+sclp_vt220_con_write(struct console *con, const char *buf, unsigned int count)
+{
+ __sclp_vt220_write((const unsigned char *) buf, count, 1, 1, 0);
+}
+
+static struct tty_driver *
+sclp_vt220_con_device(struct console *c, int *index)
+{
+ *index = 0;
+ return sclp_vt220_driver;
+}
+
static int
sclp_vt220_notify(struct notifier_block *self,
unsigned long event, void *data)
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 64f57ef..0c0705b 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -162,9 +162,10 @@ tapeblock_requeue(struct work_struct *work) {
spin_lock_irq(&device->blk_data.request_queue_lock);
while (
!blk_queue_plugged(queue) &&
- (req = blk_fetch_request(queue)) &&
+ blk_peek_request(queue) &&
nr_queued < TAPEBLOCK_MIN_REQUEUE
) {
+ req = blk_fetch_request(queue);
if (rq_data_dir(req) == WRITE) {
DBF_EVENT(1, "TBLOCK: Rejecting write request\n");
spin_unlock_irq(&device->blk_data.request_queue_lock);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 2ee093e..2490b74 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1250,8 +1250,7 @@ static int io_subchannel_probe(struct subchannel *sch)
unsigned long flags;
struct ccw_dev_id dev_id;

- cdev = sch_get_cdev(sch);
- if (cdev) {
+ if (cio_is_console(sch->schid)) {
rc = sysfs_create_group(&sch->dev.kobj,
&io_subchannel_attr_group);
if (rc)
@@ -1260,13 +1259,13 @@ static int io_subchannel_probe(struct subchannel *sch)
"0.%x.%04x (rc=%d)\n",
sch->schid.ssid, sch->schid.sch_no, rc);
/*
- * This subchannel already has an associated ccw_device.
+ * The console subchannel already has an associated ccw_device.
* Throw the delayed uevent for the subchannel, register
- * the ccw_device and exit. This happens for all early
- * devices, e.g. the console.
+ * the ccw_device and exit.
*/
dev_set_uevent_suppress(&sch->dev, 0);
kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
+ cdev = sch_get_cdev(sch);
cdev->dev.groups = ccwdev_attr_groups;
device_initialize(&cdev->dev);
ccw_device_register(cdev);

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