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author | Paul Mackerras <paulus@samba.org> | 2007-04-30 12:38:01 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2007-04-30 12:38:01 +1000 |
commit | 49e1900d4cc2e7bcecb681fe60f0990bec2dcce8 (patch) | |
tree | 253801ebf57e0a23856a2c7be129c2c178f62fdf /drivers/usb/serial/visor.c | |
parent | 34f6d749c0a328817d5e36274e53121c1db734dc (diff) | |
parent | b9099ff63c75216d6ca10bce5a1abcd9293c27e6 (diff) | |
download | lwn-49e1900d4cc2e7bcecb681fe60f0990bec2dcce8.tar.gz lwn-49e1900d4cc2e7bcecb681fe60f0990bec2dcce8.zip |
Merge branch 'linux-2.6' into for-2.6.22
Diffstat (limited to 'drivers/usb/serial/visor.c')
-rw-r--r-- | drivers/usb/serial/visor.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 2f59ff226e2c..ffbe601cde2a 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -384,19 +384,21 @@ static int visor_write (struct usb_serial_port *port, const unsigned char *buf, dbg("%s - write limit hit\n", __FUNCTION__); return 0; } + priv->outstanding_urbs++; spin_unlock_irqrestore(&priv->lock, flags); buffer = kmalloc (count, GFP_ATOMIC); if (!buffer) { dev_err(&port->dev, "out of memory\n"); - return -ENOMEM; + count = -ENOMEM; + goto error_no_buffer; } urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) { dev_err(&port->dev, "no more free urbs\n"); - kfree (buffer); - return -ENOMEM; + count = -ENOMEM; + goto error_no_urb; } memcpy (buffer, buf, count); @@ -415,19 +417,27 @@ static int visor_write (struct usb_serial_port *port, const unsigned char *buf, dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __FUNCTION__, status); count = status; - kfree (buffer); + goto error; } else { spin_lock_irqsave(&priv->lock, flags); - ++priv->outstanding_urbs; priv->bytes_out += count; spin_unlock_irqrestore(&priv->lock, flags); } /* we are done with this urb, so let the host driver * really free it when it is finished with it */ - usb_free_urb (urb); + usb_free_urb(urb); return count; +error: + usb_free_urb(urb); +error_no_urb: + kfree(buffer); +error_no_buffer: + spin_lock_irqsave(&priv->lock, flags); + --priv->outstanding_urbs; + spin_unlock_irqrestore(&priv->lock, flags); + return count; } |