summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/s390/block/dasd_eer.c16
-rw-r--r--drivers/s390/char/raw3270.c10
-rw-r--r--drivers/s390/cio/device.c49
-rw-r--r--drivers/s390/cio/device_fsm.c6
4 files changed, 57 insertions, 24 deletions
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index a1dc8c466ec..0c081a664ee 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -14,9 +14,9 @@
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/poll.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include <asm/atomic.h>
#include <asm/ebcdic.h>
@@ -514,7 +514,7 @@ void dasd_eer_disable(struct dasd_device *device)
* to transfer in a readbuffer, which is protected by the readbuffer_mutex.
*/
static char readbuffer[PAGE_SIZE];
-static DECLARE_MUTEX(readbuffer_mutex);
+static DEFINE_MUTEX(readbuffer_mutex);
static int dasd_eer_open(struct inode *inp, struct file *filp)
{
@@ -579,7 +579,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
struct eerbuffer *eerb;
eerb = (struct eerbuffer *) filp->private_data;
- if (down_interruptible(&readbuffer_mutex))
+ if (mutex_lock_interruptible(&readbuffer_mutex))
return -ERESTARTSYS;
spin_lock_irqsave(&bufferlock, flags);
@@ -588,7 +588,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
/* has been deleted */
eerb->residual = 0;
spin_unlock_irqrestore(&bufferlock, flags);
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
return -EIO;
} else if (eerb->residual > 0) {
/* OK we still have a second half of a record to deliver */
@@ -602,7 +602,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
if (!tc) {
/* no data available */
spin_unlock_irqrestore(&bufferlock, flags);
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
rc = wait_event_interruptible(
@@ -610,7 +610,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
eerb->head != eerb->tail);
if (rc)
return rc;
- if (down_interruptible(&readbuffer_mutex))
+ if (mutex_lock_interruptible(&readbuffer_mutex))
return -ERESTARTSYS;
spin_lock_irqsave(&bufferlock, flags);
}
@@ -626,11 +626,11 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
spin_unlock_irqrestore(&bufferlock, flags);
if (copy_to_user(buf, readbuffer, effective_count)) {
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
return -EFAULT;
}
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
return effective_count;
}
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index f6ef90ee3e7..743944ad61e 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -487,7 +487,7 @@ struct raw3270_ua { /* Query Reply structure for Usable Area */
} __attribute__ ((packed));
static struct diag210 raw3270_init_diag210;
-static DECLARE_MUTEX(raw3270_init_sem);
+static DEFINE_MUTEX(raw3270_init_mutex);
static int
raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq,
@@ -713,7 +713,7 @@ raw3270_size_device(struct raw3270 *rp)
{
int rc;
- down(&raw3270_init_sem);
+ mutex_lock(&raw3270_init_mutex);
rp->view = &raw3270_init_view;
raw3270_init_view.dev = rp;
if (MACHINE_IS_VM)
@@ -722,7 +722,7 @@ raw3270_size_device(struct raw3270 *rp)
rc = __raw3270_size_device(rp);
raw3270_init_view.dev = NULL;
rp->view = NULL;
- up(&raw3270_init_sem);
+ mutex_unlock(&raw3270_init_mutex);
if (rc == 0) { /* Found something. */
/* Try to find a model. */
rp->model = 0;
@@ -749,7 +749,7 @@ raw3270_reset_device(struct raw3270 *rp)
{
int rc;
- down(&raw3270_init_sem);
+ mutex_lock(&raw3270_init_mutex);
memset(&rp->init_request, 0, sizeof(rp->init_request));
memset(&rp->init_data, 0, sizeof(rp->init_data));
/* Store reset data stream to init_data/init_request */
@@ -764,7 +764,7 @@ raw3270_reset_device(struct raw3270 *rp)
rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request);
raw3270_init_view.dev = NULL;
rp->view = NULL;
- up(&raw3270_init_sem);
+ mutex_unlock(&raw3270_init_mutex);
return rc;
}
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index a8b373f69cf..6b264bdb5bf 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -296,30 +296,57 @@ static void ccw_device_unregister(struct ccw_device *cdev)
device_del(&cdev->dev);
}
+static void ccw_device_remove_orphan_cb(struct device *dev)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+
+ ccw_device_unregister(cdev);
+ put_device(&cdev->dev);
+}
+
+static void ccw_device_remove_sch_cb(struct device *dev)
+{
+ struct subchannel *sch;
+
+ sch = to_subchannel(dev);
+ css_sch_device_unregister(sch);
+ /* Reset intparm to zeroes. */
+ sch->schib.pmcw.intparm = 0;
+ cio_modify(sch);
+ put_device(&sch->dev);
+}
+
static void
ccw_device_remove_disconnected(struct ccw_device *cdev)
{
- struct subchannel *sch;
unsigned long flags;
+ int rc;
+
/*
* Forced offline in disconnected state means
* 'throw away device'.
*/
if (ccw_device_is_orphan(cdev)) {
- /* Deregister ccw device. */
+ /*
+ * Deregister ccw device.
+ * Unfortunately, we cannot do this directly from the
+ * attribute method.
+ */
spin_lock_irqsave(cdev->ccwlock, flags);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
- ccw_device_unregister(cdev);
- put_device(&cdev->dev);
- return ;
+ rc = device_schedule_callback(&cdev->dev,
+ ccw_device_remove_orphan_cb);
+ if (rc)
+ dev_info(&cdev->dev, "Couldn't unregister orphan\n");
+ return;
}
- sch = to_subchannel(cdev->dev.parent);
- css_sch_device_unregister(sch);
- /* Reset intparm to zeroes. */
- sch->schib.pmcw.intparm = 0;
- cio_modify(sch);
- put_device(&sch->dev);
+ /* Deregister subchannel, which will kill the ccw device. */
+ rc = device_schedule_callback(cdev->dev.parent,
+ ccw_device_remove_sch_cb);
+ if (rc)
+ dev_info(&cdev->dev,
+ "Couldn't unregister disconnected device\n");
}
int
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 898ec3b2beb..6bba8092957 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -688,6 +688,12 @@ ccw_device_disband_done(struct ccw_device *cdev, int err)
ccw_device_done(cdev, DEV_STATE_BOXED);
break;
default:
+ cdev->private->flags.donotify = 0;
+ if (get_device(&cdev->dev)) {
+ PREPARE_WORK(&cdev->private->kick_work,
+ ccw_device_call_sch_unregister);
+ queue_work(ccw_device_work, &cdev->private->kick_work);
+ }
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 22:32:14 +0000