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| author | Tomoki Sekiyama <tomoki.sekiyama@gmail.com> | 2010-10-02 23:59:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 19:21:52 +0200 |
| commit | e06ea97fa47611992a5a61058729cf8e83bf6fda (patch) | |
| tree | 11f56ee7991106409bc6c4d51af1db567a758f84 /drivers/usb/misc | |
| parent | USB: yurex: assign a real minor number to the driver (diff) | |
| download | linux-e06ea97fa47611992a5a61058729cf8e83bf6fda.tar.xz linux-e06ea97fa47611992a5a61058729cf8e83bf6fda.zip | |
USB: yurex: fix memory leak and corrupted messages
This fixes the memory leak on disconnecting the device.
In addition, it fixes some messages corrupted by incorrect encoding.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/yurex.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 5f6443bc6142..719c6180b31f 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -37,7 +37,7 @@ #define CMD_PADDING 0xff #define YUREX_BUF_SIZE 8 -#define YUREX_WRITE_TIMEOUT (HZ) +#define YUREX_WRITE_TIMEOUT (HZ*2) /* table of devices that work with this driver */ static struct usb_device_id yurex_table[] = { @@ -83,7 +83,7 @@ static void yurex_control_callback(struct urb *urb) int status = urb->status; if (status) { - err("%s - control failed: %dĽn", __func__, status); + err("%s - control failed: %d\n", __func__, status); wake_up_interruptible(&dev->waitq); return; } @@ -97,6 +97,16 @@ static void yurex_delete(struct kref *kref) dbg("yurex_delete"); usb_put_dev(dev->udev); + if (dev->cntl_urb) { + usb_kill_urb(dev->cntl_urb); + if (dev->cntl_req) + usb_free_coherent(dev->udev, YUREX_BUF_SIZE, + dev->cntl_req, dev->cntl_urb->setup_dma); + if (dev->cntl_buffer) + usb_free_coherent(dev->udev, YUREX_BUF_SIZE, + dev->cntl_buffer, dev->cntl_urb->transfer_dma); + usb_free_urb(dev->cntl_urb); + } if (dev->urb) { usb_kill_urb(dev->urb); if (dev->int_buffer) @@ -253,7 +263,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ usb_sndctrlpipe(dev->udev, 0), (void *)dev->cntl_req, dev->cntl_buffer, YUREX_BUF_SIZE, yurex_control_callback, dev); - dev->cntl_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + dev->cntl_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* allocate interrupt URB */ @@ -276,6 +286,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ usb_rcvintpipe(dev->udev, dev->int_in_endpointAddr), dev->int_buffer, YUREX_BUF_SIZE, yurex_interrupt, dev, 1); + dev->cntl_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; if (usb_submit_urb(dev->urb, GFP_KERNEL)) { retval = -EIO; err("Could not submitting URB"); @@ -296,7 +307,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ dev->bbu = -1; dev_info(&interface->dev, - "USB Yurex device now attached to Yurex-%dĽn", + "USB YUREX device now attached to Yurex #%d\n", interface->minor); return 0; @@ -331,7 +342,7 @@ static void yurex_disconnect(struct usb_interface *interface) /* decrement our usage count */ kref_put(&dev->kref, yurex_delete); - dev_info(&interface->dev, "USB Yurex #%d now disconnected", minor); + dev_info(&interface->dev, "USB YUREX #%d now disconnected\n", minor); } static struct usb_driver yurex_driver = { @@ -417,7 +428,7 @@ static ssize_t yurex_read(struct file *file, char *buffer, size_t count, loff_t } spin_lock_irqsave(&dev->lock, flags); - bytes_read = snprintf(in_buffer, 20, "%lldĽn", dev->bbu); + bytes_read = snprintf(in_buffer, 20, "%lld\n", dev->bbu); spin_unlock_irqrestore(&dev->lock, flags); if (*ppos < bytes_read) { |