Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  Staging: comedi: fix integer overflow in do_insnlist_ioctl()
  Revert "Staging: comedi: integer overflow in do_insnlist_ioctl()"
  Staging: comedi: integer overflow in do_insnlist_ioctl()
  Staging: comedi: fix signal handling in read and write
  Staging: comedi: fix mmap_count
  staging: comedi: fix oops for USB DAQ devices.
  staging: comedi: usbduxsigma: Fixed wrong range for the analogue channel.
  staging:rts_pstor:Complete scanning_done variable
  staging: usbip: bugfix for deadlock

diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 21d8c1c..5e78c77 100644 (file)
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -671,7 +671,7 @@ static int do_insnlist_ioctl(struct comedi_device *dev,
        }
 
        insns =
-           kmalloc(sizeof(struct comedi_insn) * insnlist.n_insns, GFP_KERNEL);
+           kcalloc(insnlist.n_insns, sizeof(struct comedi_insn), GFP_KERNEL);
        if (!insns) {
                DPRINTK("kmalloc failed\n");
                ret = -ENOMEM;
@@ -1432,7 +1432,21 @@ static int do_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
        return ret;
 }
 
-static void comedi_unmap(struct vm_area_struct *area)
+
+static void comedi_vm_open(struct vm_area_struct *area)
+{
+       struct comedi_async *async;
+       struct comedi_device *dev;
+
+       async = area->vm_private_data;
+       dev = async->subdevice->device;
+
+       mutex_lock(&dev->mutex);
+       async->mmap_count++;
+       mutex_unlock(&dev->mutex);
+}
+
+static void comedi_vm_close(struct vm_area_struct *area)
 {
        struct comedi_async *async;
        struct comedi_device *dev;
@@ -1446,15 +1460,13 @@ static void comedi_unmap(struct vm_area_struct *area)
 }
 
 static struct vm_operations_struct comedi_vm_ops = {
-       .close = comedi_unmap,
+       .open = comedi_vm_open,
+       .close = comedi_vm_close,
 };
 
 static int comedi_mmap(struct file *file, struct vm_area_struct *vma)
 {
        const unsigned minor = iminor(file->f_dentry->d_inode);
-       struct comedi_device_file_info *dev_file_info =
-           comedi_get_device_file_info(minor);
-       struct comedi_device *dev = dev_file_info->device;
        struct comedi_async *async = NULL;
        unsigned long start = vma->vm_start;
        unsigned long size;
@@ -1462,6 +1474,15 @@ static int comedi_mmap(struct file *file, struct vm_area_struct *vma)
        int i;
        int retval;
        struct comedi_subdevice *s;
+       struct comedi_device_file_info *dev_file_info;
+       struct comedi_device *dev;
+
+       dev_file_info = comedi_get_device_file_info(minor);
+       if (dev_file_info == NULL)
+               return -ENODEV;
+       dev = dev_file_info->device;
+       if (dev == NULL)
+               return -ENODEV;
 
        mutex_lock(&dev->mutex);
        if (!dev->attached) {
@@ -1528,11 +1549,17 @@ static unsigned int comedi_poll(struct file *file, poll_table * wait)
 {
        unsigned int mask = 0;
        const unsigned minor = iminor(file->f_dentry->d_inode);
-       struct comedi_device_file_info *dev_file_info =
-           comedi_get_device_file_info(minor);
-       struct comedi_device *dev = dev_file_info->device;
        struct comedi_subdevice *read_subdev;
        struct comedi_subdevice *write_subdev;
+       struct comedi_device_file_info *dev_file_info;
+       struct comedi_device *dev;
+       dev_file_info = comedi_get_device_file_info(minor);
+
+       if (dev_file_info == NULL)
+               return -ENODEV;
+       dev = dev_file_info->device;
+       if (dev == NULL)
+               return -ENODEV;
 
        mutex_lock(&dev->mutex);
        if (!dev->attached) {
@@ -1578,9 +1605,15 @@ static ssize_t comedi_write(struct file *file, const char __user *buf,
        int n, m, count = 0, retval = 0;
        DECLARE_WAITQUEUE(wait, current);
        const unsigned minor = iminor(file->f_dentry->d_inode);
-       struct comedi_device_file_info *dev_file_info =
-           comedi_get_device_file_info(minor);
-       struct comedi_device *dev = dev_file_info->device;
+       struct comedi_device_file_info *dev_file_info;
+       struct comedi_device *dev;
+       dev_file_info = comedi_get_device_file_info(minor);
+
+       if (dev_file_info == NULL)
+               return -ENODEV;
+       dev = dev_file_info->device;
+       if (dev == NULL)
+               return -ENODEV;
 
        if (!dev->attached) {
                DPRINTK("no driver configured on comedi%i\n", dev->minor);
@@ -1640,11 +1673,11 @@ static ssize_t comedi_write(struct file *file, const char __user *buf,
                                retval = -EAGAIN;
                                break;
                        }
+                       schedule();
                        if (signal_pending(current)) {
                                retval = -ERESTARTSYS;
                                break;
                        }
-                       schedule();
                        if (!s->busy)
                                break;
                        if (s->busy != file) {
@@ -1683,9 +1716,15 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes,
        int n, m, count = 0, retval = 0;
        DECLARE_WAITQUEUE(wait, current);
        const unsigned minor = iminor(file->f_dentry->d_inode);
-       struct comedi_device_file_info *dev_file_info =
-           comedi_get_device_file_info(minor);
-       struct comedi_device *dev = dev_file_info->device;
+       struct comedi_device_file_info *dev_file_info;
+       struct comedi_device *dev;
+       dev_file_info = comedi_get_device_file_info(minor);
+
+       if (dev_file_info == NULL)
+               return -ENODEV;
+       dev = dev_file_info->device;
+       if (dev == NULL)
+               return -ENODEV;
 
        if (!dev->attached) {
                DPRINTK("no driver configured on comedi%i\n", dev->minor);
@@ -1741,11 +1780,11 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes,
                                retval = -EAGAIN;
                                break;
                        }
+                       schedule();
                        if (signal_pending(current)) {
                                retval = -ERESTARTSYS;
                                break;
                        }
-                       schedule();
                        if (!s->busy) {
                                retval = 0;
                                break;
@@ -1885,11 +1924,17 @@ ok:
 static int comedi_close(struct inode *inode, struct file *file)
 {
        const unsigned minor = iminor(inode);
-       struct comedi_device_file_info *dev_file_info =
-           comedi_get_device_file_info(minor);
-       struct comedi_device *dev = dev_file_info->device;
        struct comedi_subdevice *s = NULL;
        int i;
+       struct comedi_device_file_info *dev_file_info;
+       struct comedi_device *dev;
+       dev_file_info = comedi_get_device_file_info(minor);
+
+       if (dev_file_info == NULL)
+               return -ENODEV;
+       dev = dev_file_info->device;
+       if (dev == NULL)
+               return -ENODEV;
 
        mutex_lock(&dev->mutex);
 
@@ -1923,10 +1968,15 @@ static int comedi_close(struct inode *inode, struct file *file)
 static int comedi_fasync(int fd, struct file *file, int on)
 {
        const unsigned minor = iminor(file->f_dentry->d_inode);
-       struct comedi_device_file_info *dev_file_info =
-           comedi_get_device_file_info(minor);
+       struct comedi_device_file_info *dev_file_info;
+       struct comedi_device *dev;
+       dev_file_info = comedi_get_device_file_info(minor);
 
-       struct comedi_device *dev = dev_file_info->device;
+       if (dev_file_info == NULL)
+               return -ENODEV;
+       dev = dev_file_info->device;
+       if (dev == NULL)
+               return -ENODEV;
 
        return fasync_helper(fd, file, on, &dev->async_queue);
 }

diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c
index a8fea9a..6144afb 100644 (file)
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -1,4 +1,4 @@
-#define DRIVER_VERSION "v0.5"
+#define DRIVER_VERSION "v0.6"
 #define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com"
 #define DRIVER_DESC "Stirling/ITL USB-DUX SIGMA -- Bernd.Porr@f2s.com"
 /*
@@ -25,7 +25,7 @@ Driver: usbduxsigma
 Description: University of Stirling USB DAQ & INCITE Technology Limited
 Devices: [ITL] USB-DUX (usbduxsigma.o)
 Author: Bernd Porr <BerndPorr@f2s.com>
-Updated: 21 Jul 2011
+Updated: 8 Nov 2011
 Status: testing
 */
 /*
@@ -44,6 +44,7 @@ Status: testing
  *   0.3: proper vendor ID and driver name
  *   0.4: fixed D/A voltage range
  *   0.5: various bug fixes, health check at startup
+ *   0.6: corrected wrong input range
  */
 
 /* generates loads of debug info */
@@ -175,7 +176,7 @@ Status: testing
 /* comedi constants */
 static const struct comedi_lrange range_usbdux_ai_range = { 1, {
                                                                BIP_RANGE
-                                                               (2.65)
+                                                               (2.65/2.0)
                                                                }
 };
 

diff --git a/drivers/staging/rts_pstor/rtsx.c b/drivers/staging/rts_pstor/rtsx.c
index 480b0ed..115635f 100644 (file)
--- a/drivers/staging/rts_pstor/rtsx.c
+++ b/drivers/staging/rts_pstor/rtsx.c
@@ -1021,6 +1021,7 @@ static int __devinit rtsx_probe(struct pci_dev *pci,
        th = kthread_create(rtsx_scan_thread, dev, "rtsx-scan");
        if (IS_ERR(th)) {
                printk(KERN_ERR "Unable to start the device-scanning thread\n");
+               complete(&dev->scanning_done);
                quiesce_and_remove_host(dev);
                err = PTR_ERR(th);
                goto errout;

diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c
index 09c44ab..3872b8c 100644 (file)
--- a/drivers/staging/usbip/vhci_rx.c
+++ b/drivers/staging/usbip/vhci_rx.c
@@ -68,6 +68,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
 {
        struct usbip_device *ud = &vdev->ud;
        struct urb *urb;
+       unsigned long flags;
 
        spin_lock(&vdev->priv_lock);
        urb = pickup_urb_and_free_priv(vdev, pdu->base.seqnum);
@@ -101,9 +102,9 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
 
        usbip_dbg_vhci_rx("now giveback urb %p\n", urb);
 
-       spin_lock(&the_controller->lock);
+       spin_lock_irqsave(&the_controller->lock, flags);
        usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb);
-       spin_unlock(&the_controller->lock);
+       spin_unlock_irqrestore(&the_controller->lock, flags);
 
        usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, urb->status);
 
@@ -141,6 +142,7 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev,
 {
        struct vhci_unlink *unlink;
        struct urb *urb;
+       unsigned long flags;
 
        usbip_dump_header(pdu);
 
@@ -170,9 +172,9 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev,
                urb->status = pdu->u.ret_unlink.status;
                pr_info("urb->status %d\n", urb->status);
 
-               spin_lock(&the_controller->lock);
+               spin_lock_irqsave(&the_controller->lock, flags);
                usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb);
-               spin_unlock(&the_controller->lock);
+               spin_unlock_irqrestore(&the_controller->lock, flags);
 
                usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb,
                                     urb->status);