FBTFT Framebuffer drivers
M: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-M: Noralf Trønnes <noralf@tronnes.org>
S: Maintained
F: drivers/staging/fbtft/
F: include/uapi/linux/hsi/
HSO 3G MODEM DRIVER
- M: Jan Dumon <j.dumon@option.com>
- W: http://www.pharscape.org
- S: Maintained
+ L: linux-usb@vger.kernel.org
+ S: Orphan
F: drivers/net/usb/hso.c
HSR NETWORK PROTOCOL
Q: http://patchwork.ozlabs.org/project/linuxppc-dev/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
S: Supported
+F: Documentation/ABI/stable/sysfs-firmware-opal-*
+F: Documentation/devicetree/bindings/powerpc/opal/
+F: Documentation/devicetree/bindings/rtc/rtc-opal.txt
+F: Documentation/devicetree/bindings/i2c/i2c-opal.txt
F: Documentation/powerpc/
F: arch/powerpc/
F: drivers/char/tpm/tpm_ibmvtpm*
F: drivers/crypto/nx/
F: drivers/crypto/vmx/
+F: drivers/i2c/busses/i2c-opal.c
F: drivers/net/ethernet/ibm/ibmveth.*
F: drivers/net/ethernet/ibm/ibmvnic.*
F: drivers/pci/hotplug/pnv_php.c
F: drivers/pci/hotplug/rpa*
+F: drivers/rtc/rtc-opal.c
F: drivers/scsi/ibmvscsi/
+F: drivers/tty/hvc/hvc_opal.c
F: tools/testing/selftests/powerpc
-N: opal
N: /pmac
N: powermac
N: powernv
S: Supported
F: drivers/scsi/qedi/
+QLOGIC QL41xxx FCOE DRIVER
+M: QLogic-Storage-Upstream@cavium.com
+L: linux-scsi@vger.kernel.org
+S: Supported
+F: drivers/scsi/qedf/
+
QNX4 FILESYSTEM
M: Anders Larsen <al@alarsen.net>
W: http://www.alarsen.net/linux/qnx4fs/
* at once, the weight is chosen so that the EWMA will be insensitive to short-
* term, transient changes in packet size.
*/
- DECLARE_EWMA(pkt_len, 1, 64)
+ DECLARE_EWMA(pkt_len, 0, 64)
/* With mergeable buffers we align buffer address and use the low bits to
* encode its true size. Buffer size is up to 1 page so we need to align to
}
ret = vi->vdev->config->find_vqs(vi->vdev, total_vqs, vqs, callbacks,
- names);
+ names, NULL);
if (ret)
goto err_find;
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/sched/signal.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/net.h>
struct inet6_dev *idev = (struct inet6_dev *)ctl->extra1;
struct net *net = (struct net *)ctl->extra2;
+ if (!rtnl_trylock())
+ return restart_syscall();
+
ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
if (write) {
new_val = *((int *)ctl->data);
- if (check_addr_gen_mode(new_val) < 0)
- return -EINVAL;
+ if (check_addr_gen_mode(new_val) < 0) {
+ ret = -EINVAL;
+ goto out;
+ }
/* request for default */
if (&net->ipv6.devconf_dflt->addr_gen_mode == ctl->data) {
/* request for individual net device */
} else {
if (!idev)
- return ret;
+ goto out;
- if (check_stable_privacy(idev, net, new_val) < 0)
- return -EINVAL;
+ if (check_stable_privacy(idev, net, new_val) < 0) {
+ ret = -EINVAL;
+ goto out;
+ }
if (idev->cnf.addr_gen_mode != new_val) {
idev->cnf.addr_gen_mode = new_val;
- rtnl_lock();
addrconf_dev_config(idev->dev);
- rtnl_unlock();
}
}
}
+ out:
+ rtnl_unlock();
+
return ret;
}
/* page.c */
int rds_page_remainder_alloc(struct scatterlist *scat, unsigned long bytes,
gfp_t gfp);
-int rds_page_copy_user(struct page *page, unsigned long offset,
- void __user *ptr, unsigned long bytes,
- int to_user);
-#define rds_page_copy_to_user(page, offset, ptr, bytes) \
- rds_page_copy_user(page, offset, ptr, bytes, 1)
-#define rds_page_copy_from_user(page, offset, ptr, bytes) \
- rds_page_copy_user(page, offset, ptr, bytes, 0)
void rds_page_exit(void);
/* recv.c */
void rds_connect_complete(struct rds_connection *conn);
/* transport.c */
- int rds_trans_register(struct rds_transport *trans);
+ void rds_trans_register(struct rds_transport *trans);
void rds_trans_unregister(struct rds_transport *trans);
struct rds_transport *rds_trans_get_preferred(struct net *net, __be32 addr);
void rds_trans_put(struct rds_transport *trans);
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/export.h>
+#include <linux/sched/signal.h>
+
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"
trace_rxrpc_recvmsg(call, rxrpc_recvmsg_dequeue, 0, 0, 0, 0);
+ /* We're going to drop the socket lock, so we need to lock the call
+ * against interference by sendmsg.
+ */
+ if (!mutex_trylock(&call->user_mutex)) {
+ ret = -EWOULDBLOCK;
+ if (flags & MSG_DONTWAIT)
+ goto error_requeue_call;
+ ret = -ERESTARTSYS;
+ if (mutex_lock_interruptible(&call->user_mutex) < 0)
+ goto error_requeue_call;
+ }
+
+ release_sock(&rx->sk);
+
if (test_bit(RXRPC_CALL_RELEASED, &call->flags))
BUG();
&call->user_call_ID);
}
if (ret < 0)
- goto error;
+ goto error_unlock_call;
}
if (msg->msg_name) {
}
if (ret < 0)
- goto error;
+ goto error_unlock_call;
if (call->state == RXRPC_CALL_COMPLETE) {
ret = rxrpc_recvmsg_term(call, msg);
if (ret < 0)
- goto error;
+ goto error_unlock_call;
if (!(flags & MSG_PEEK))
rxrpc_release_call(rx, call);
msg->msg_flags |= MSG_EOR;
msg->msg_flags &= ~MSG_MORE;
ret = copied;
- error:
+ error_unlock_call:
+ mutex_unlock(&call->user_mutex);
rxrpc_put_call(call, rxrpc_call_put);
+ trace_rxrpc_recvmsg(call, rxrpc_recvmsg_return, 0, 0, 0, ret);
+ return ret;
+
+ error_requeue_call:
+ if (!(flags & MSG_PEEK)) {
+ write_lock_bh(&rx->recvmsg_lock);
+ list_add(&call->recvmsg_link, &rx->recvmsg_q);
+ write_unlock_bh(&rx->recvmsg_lock);
+ trace_rxrpc_recvmsg(call, rxrpc_recvmsg_requeue, 0, 0, 0, 0);
+ } else {
+ rxrpc_put_call(call, rxrpc_call_put);
+ }
error_no_call:
release_sock(&rx->sk);
trace_rxrpc_recvmsg(call, rxrpc_recvmsg_return, 0, 0, 0, ret);
iov.iov_len = size - *_offset;
iov_iter_kvec(&iter, ITER_KVEC | READ, &iov, 1, size - *_offset);
- lock_sock(sock->sk);
+ mutex_lock(&call->user_mutex);
switch (call->state) {
case RXRPC_CALL_CLIENT_RECV_REPLY:
read_phase_complete:
ret = 1;
out:
- release_sock(sock->sk);
+ mutex_unlock(&call->user_mutex);
_leave(" = %d [%zu,%d]", ret, *_offset, *_abort);
return ret;
#include <linux/gfp.h>
#include <linux/skbuff.h>
#include <linux/export.h>
+#include <linux/sched/signal.h>
+
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"
}
trace_rxrpc_transmit(call, rxrpc_transmit_wait);
- release_sock(&rx->sk);
+ mutex_unlock(&call->user_mutex);
*timeo = schedule_timeout(*timeo);
- lock_sock(&rx->sk);
+ if (mutex_lock_interruptible(&call->user_mutex) < 0) {
+ ret = sock_intr_errno(*timeo);
+ break;
+ }
}
remove_wait_queue(&call->waitq, &myself);
/*
* send data through a socket
* - must be called in process context
- * - caller holds the socket locked
+ * - The caller holds the call user access mutex, but not the socket lock.
*/
static int rxrpc_send_data(struct rxrpc_sock *rx,
struct rxrpc_call *call,
/*
* Create a new client call for sendmsg().
+ * - Called with the socket lock held, which it must release.
+ * - If it returns a call, the call's lock will need releasing by the caller.
*/
static struct rxrpc_call *
rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg,
unsigned long user_call_ID, bool exclusive)
+ __releases(&rx->sk.sk_lock.slock)
{
struct rxrpc_conn_parameters cp;
struct rxrpc_call *call;
_enter("");
- if (!msg->msg_name)
+ if (!msg->msg_name) {
+ release_sock(&rx->sk);
return ERR_PTR(-EDESTADDRREQ);
+ }
key = rx->key;
if (key && !rx->key->payload.data[0])
cp.exclusive = rx->exclusive | exclusive;
cp.service_id = srx->srx_service;
call = rxrpc_new_client_call(rx, &cp, srx, user_call_ID, GFP_KERNEL);
+ /* The socket is now unlocked */
_leave(" = %p\n", call);
return call;
* - the socket may be either a client socket or a server socket
*/
int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
+ __releases(&rx->sk.sk_lock.slock)
{
enum rxrpc_command cmd;
struct rxrpc_call *call;
ret = rxrpc_sendmsg_cmsg(msg, &user_call_ID, &cmd, &abort_code,
&exclusive);
if (ret < 0)
- return ret;
+ goto error_release_sock;
if (cmd == RXRPC_CMD_ACCEPT) {
+ ret = -EINVAL;
if (rx->sk.sk_state != RXRPC_SERVER_LISTENING)
- return -EINVAL;
+ goto error_release_sock;
call = rxrpc_accept_call(rx, user_call_ID, NULL);
+ /* The socket is now unlocked. */
if (IS_ERR(call))
return PTR_ERR(call);
rxrpc_put_call(call, rxrpc_call_put);
call = rxrpc_find_call_by_user_ID(rx, user_call_ID);
if (!call) {
+ ret = -EBADSLT;
if (cmd != RXRPC_CMD_SEND_DATA)
- return -EBADSLT;
+ goto error_release_sock;
call = rxrpc_new_client_call_for_sendmsg(rx, msg, user_call_ID,
exclusive);
+ /* The socket is now unlocked... */
if (IS_ERR(call))
return PTR_ERR(call);
+ /* ... and we have the call lock. */
+ } else {
+ ret = -EBUSY;
+ if (call->state == RXRPC_CALL_UNINITIALISED ||
+ call->state == RXRPC_CALL_CLIENT_AWAIT_CONN ||
+ call->state == RXRPC_CALL_SERVER_PREALLOC ||
+ call->state == RXRPC_CALL_SERVER_SECURING ||
+ call->state == RXRPC_CALL_SERVER_ACCEPTING)
+ goto error_release_sock;
+
+ ret = mutex_lock_interruptible(&call->user_mutex);
+ release_sock(&rx->sk);
+ if (ret < 0) {
+ ret = -ERESTARTSYS;
+ goto error_put;
+ }
}
_debug("CALL %d USR %lx ST %d on CONN %p",
ret = rxrpc_send_data(rx, call, msg, len);
}
+ mutex_unlock(&call->user_mutex);
+ error_put:
rxrpc_put_call(call, rxrpc_call_put);
_leave(" = %d", ret);
return ret;
+
+ error_release_sock:
+ release_sock(&rx->sk);
+ return ret;
}
/**
ASSERTCMP(msg->msg_name, ==, NULL);
ASSERTCMP(msg->msg_control, ==, NULL);
- lock_sock(sock->sk);
+ mutex_lock(&call->user_mutex);
_debug("CALL %d USR %lx ST %d on CONN %p",
call->debug_id, call->user_call_ID, call->state, call->conn);
ret = rxrpc_send_data(rxrpc_sk(sock->sk), call, msg, len);
}
- release_sock(sock->sk);
+ mutex_unlock(&call->user_mutex);
_leave(" = %d", ret);
return ret;
}
{
_enter("{%d},%d,%d,%s", call->debug_id, abort_code, error, why);
- lock_sock(sock->sk);
+ mutex_lock(&call->user_mutex);
if (rxrpc_abort_call(why, call, 0, abort_code, error))
rxrpc_send_abort_packet(call);
- release_sock(sock->sk);
+ mutex_unlock(&call->user_mutex);
_leave("");
}
projects / linux-2.6-microblaze.git / commitdiff