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authorJohan Hovold <jhovold@gmail.com>2012-10-25 20:56:32 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-25 22:11:19 +0400
commit28c3ae9a8cf45f439c9a0779ebd0256e2ae72813 (patch)
treef9d9ea23d793f28baa76b0662f86fc367f1381d6 /drivers/usb
parent961be09e1ead58509ed4bed0d5819a15d8613d8d (diff)
downloadlinux-28c3ae9a8cf45f439c9a0779ebd0256e2ae72813.tar.xz
USB: mos7840: remove NULL-urb submission
The private int_urb is never allocated so the submission from the control completion handler will always fail. Remove this odd piece of broken code. Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/serial/mos7840.c14
1 files changed, 1 insertions, 13 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index c5e5a6c8d69e..f2c4bb709747 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -218,7 +218,6 @@ struct moschip_port {
int port_num; /*Actual port number in the device(1,2,etc) */
struct urb *write_urb; /* write URB for this port */
struct urb *read_urb; /* read URB for this port */
- struct urb *int_urb;
__u8 shadowLCR; /* last LCR value received */
__u8 shadowMCR; /* last MCR value received */
char open;
@@ -478,7 +477,6 @@ static void mos7840_control_callback(struct urb *urb)
struct moschip_port *mos7840_port;
struct device *dev = &urb->dev->dev;
__u8 regval = 0x0;
- int result = 0;
int status = urb->status;
mos7840_port = urb->context;
@@ -495,7 +493,7 @@ static void mos7840_control_callback(struct urb *urb)
return;
default:
dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status);
- goto exit;
+ return;
}
dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length);
@@ -508,16 +506,6 @@ static void mos7840_control_callback(struct urb *urb)
mos7840_handle_new_msr(mos7840_port, regval);
else if (mos7840_port->MsrLsr == 1)
mos7840_handle_new_lsr(mos7840_port, regval);
-
-exit:
- spin_lock(&mos7840_port->pool_lock);
- if (!mos7840_port->zombie)
- result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC);
- spin_unlock(&mos7840_port->pool_lock);
- if (result) {
- dev_err(dev, "%s - Error %d submitting interrupt urb\n",
- __func__, result);
- }
}
static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg,