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staging: usbip: removed dead code from receive function

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The usbip_xmit function supported sending and receiving data, however
the sending part of the function was never used/executed. Renamed the
function to usbip_recv, and removed the unused code.

Signed-off-by: Bart Westgeest <bart@elbrys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bart Westgeest 2011-12-19 17:44:11 -05:00 committed by Greg Kroah-Hartman
parent 7933514043
commit 5a08c5267e
4 changed files with 20 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/usbip/stub_rx.c
View File

@ -564,7 +564,7 @@ static void stub_rx_pdu(struct usbip_device *ud)
memset(&pdu, 0, sizeof(pdu));
/* 1. receive a pdu header */
ret = usbip_xmit(0, ud->tcp_socket, (char *) &pdu, sizeof(pdu), 0);
ret = usbip_recv(ud->tcp_socket, &pdu, sizeof(pdu));
if (ret != sizeof(pdu)) {
dev_err(dev, "recv a header, %d\n", ret);
usbip_event_add(ud, SDEV_EVENT_ERROR_TCP);

61
drivers/staging/usbip/usbip_common.c
View File

@ -334,9 +334,8 @@ void usbip_dump_header(struct usbip_header *pdu)
}
EXPORT_SYMBOL_GPL(usbip_dump_header);
/* Send/receive messages over TCP/IP. I refer drivers/block/nbd.c */
int usbip_xmit(int send, struct socket *sock, char *buf, int size,
int msg_flags)
/* Receive data over TCP/IP. */
int usbip_recv(struct socket *sock, void *buf, int size)
{
int result;
struct msghdr msg;
@ -355,19 +354,6 @@ int usbip_xmit(int send, struct socket *sock, char *buf, int size,
return -EINVAL;
}
if (usbip_dbg_flag_xmit) {
if (send) {
if (!in_interrupt())
pr_debug("%-10s:", current->comm);
else
pr_debug("interrupt :");
pr_debug("sending... , sock %p, buf %p, size %d, "
"msg_flags %d\n", sock, buf, size, msg_flags);
usbip_dump_buffer(buf, size);
}
}
do {
sock->sk->sk_allocation = GFP_NOIO;
iov.iov_base = buf;
@ -377,42 +363,30 @@ int usbip_xmit(int send, struct socket *sock, char *buf, int size,
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_namelen = 0;
msg.msg_flags = msg_flags | MSG_NOSIGNAL;
if (send)
result = kernel_sendmsg(sock, &msg, &iov, 1, size);
else
result = kernel_recvmsg(sock, &msg, &iov, 1, size,
MSG_WAITALL);
msg.msg_flags = MSG_NOSIGNAL;
result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL);
if (result <= 0) {
pr_debug("%s sock %p buf %p size %u ret %d total %d\n",
send ? "send" : "receive", sock, buf, size,
result, total);
pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
sock, buf, size, result, total);
goto err;
}
size -= result;
buf += result;
total += result;
} while (size > 0);
if (usbip_dbg_flag_xmit) {
if (!send) {
if (!in_interrupt())
pr_debug("%-10s:", current->comm);
else
pr_debug("interrupt :");
if (!in_interrupt())
pr_debug("%-10s:", current->comm);
else
pr_debug("interrupt :");
pr_debug("receiving....\n");
usbip_dump_buffer(bp, osize);
pr_debug("received, osize %d ret %d size %d total %d\n",
osize, result, size, total);
}
if (send)
pr_debug("send, total %d\n", total);
pr_debug("receiving....\n");
usbip_dump_buffer(bp, osize);
pr_debug("received, osize %d ret %d size %d total %d\n",
osize, result, size, total);
}
return total;
@ -420,7 +394,7 @@ int usbip_xmit(int send, struct socket *sock, char *buf, int size,
err:
return result;
}
EXPORT_SYMBOL_GPL(usbip_xmit);
EXPORT_SYMBOL_GPL(usbip_recv);
struct socket *sockfd_to_socket(unsigned int sockfd)
{
@ -712,7 +686,7 @@ int usbip_recv_iso(struct usbip_device *ud, struct urb *urb)
if (!buff)
return -ENOMEM;
ret = usbip_xmit(0, ud->tcp_socket, buff, size, 0);
ret = usbip_recv(ud->tcp_socket, buff, size);
if (ret != size) {
dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n",
ret);
@ -823,8 +797,7 @@ int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb)
if (!(size > 0))
return 0;
ret = usbip_xmit(0, ud->tcp_socket, (char *)urb->transfer_buffer,
size, 0);
ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size);
if (ret != size) {
dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret);
if (ud->side == USBIP_STUB) {

3
drivers/staging/usbip/usbip_common.h
View File

@ -305,8 +305,7 @@ void setreuse(struct socket *);
void usbip_dump_urb(struct urb *purb);
void usbip_dump_header(struct usbip_header *pdu);
int usbip_xmit(int send, struct socket *sock, char *buf, int size,
int msg_flags);
int usbip_recv(struct socket *sock, void *buf, int size);
struct socket *sockfd_to_socket(unsigned int sockfd);
void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,

2
drivers/staging/usbip/vhci_rx.c
View File

@ -206,7 +206,7 @@ static void vhci_rx_pdu(struct usbip_device *ud)
memset(&pdu, 0, sizeof(pdu));
/* 1. receive a pdu header */
ret = usbip_xmit(0, ud->tcp_socket, (char *) &pdu, sizeof(pdu), 0);
ret = usbip_recv(ud->tcp_socket, &pdu, sizeof(pdu));
if (ret < 0) {
if (ret == -ECONNRESET)
pr_info("connection reset by peer\n");