uml: driver formatting fixes

Fix a bunch of formatting violations in the drivers:
	return(n) -> return n
	whitespace fixes
	emacs formatting comment removal
	breaking if(foo) return(n) into two lines

There are also a couple of errno use bugs:
	using errno in a printk when the failure put errno into a local variable
	saving errno after a printk, which can change it

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 0cad354..77d3fdb 100644 (file)
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -158,7 +158,7 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
         */
        err = run_helper_thread(winch_thread, &data, CLONE_FILES, &stack, 0);
        if(err < 0){
-               printk("fork of winch_thread failed - errno = %d\n", errno);
+               printk("fork of winch_thread failed - errno = %d\n", err);
                goto out_close;
        }
 

diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
index 021b82c..09d1de9 100644 (file)
--- a/arch/um/drivers/daemon_user.c
+++ b/arch/um/drivers/daemon_user.c
@@ -39,11 +39,11 @@ static struct sockaddr_un *new_addr(void *name, int len)
        sun = um_kmalloc(sizeof(struct sockaddr_un));
        if(sun == NULL){
                printk("new_addr: allocation of sockaddr_un failed\n");
-               return(NULL);
+               return NULL;
        }
        sun->sun_family = AF_UNIX;
        memcpy(sun->sun_path, name, len);
-       return(sun);
+       return sun;
 }
 
 static int connect_to_switch(struct daemon_data *pri)
@@ -112,7 +112,7 @@ static int connect_to_switch(struct daemon_data *pri)
        }
 
        pri->data_addr = sun;
-       return(fd);
+       return fd;
 
  out_free:
        kfree(sun);
@@ -120,7 +120,7 @@ static int connect_to_switch(struct daemon_data *pri)
        os_close_file(fd);
  out:
        os_close_file(pri->control);
-       return(err);
+       return err;
 }
 
 static void daemon_user_init(void *data, void *dev)
@@ -152,7 +152,7 @@ static void daemon_user_init(void *data, void *dev)
 static int daemon_open(void *data)
 {
        struct daemon_data *pri = data;
-       return(pri->fd);
+       return pri->fd;
 }
 
 static void daemon_remove(void *data)
@@ -176,12 +176,12 @@ int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
 {
        struct sockaddr_un *data_addr = pri->data_addr;
 
-       return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+       return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr));
 }
 
 static int daemon_set_mtu(int mtu, void *data)
 {
-       return(mtu);
+       return mtu;
 }
 
 const struct net_user_info daemon_user_info = {
@@ -194,14 +194,3 @@ const struct net_user_info daemon_user_info = {
        .delete_address = NULL,
        .max_packet     = MAX_PACKET - ETH_HEADER_OTHER
 };
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index b827e82..cfaa2cc 100644 (file)
--- a/arch/um/drivers/mcast_user.c
+++ b/arch/um/drivers/mcast_user.c
@@ -34,12 +34,12 @@ static struct sockaddr_in *new_addr(char *addr, unsigned short port)
        sin = um_kmalloc(sizeof(struct sockaddr_in));
        if(sin == NULL){
                printk("new_addr: allocation of sockaddr_in failed\n");
-               return(NULL);
+               return NULL;
        }
        sin->sin_family = AF_INET;
        sin->sin_addr.s_addr = in_aton(addr);
        sin->sin_port = htons(port);
-       return(sin);
+       return sin;
 }
 
 static void mcast_user_init(void *data, void *dev)
@@ -107,8 +107,8 @@ static int mcast_open(void *data)
                err = -errno;
                printk("mcast_open : data bind failed, errno = %d\n", errno);
                goto out_close;
-       }               
-       
+       }
+
        /* subscribe to the multicast group */
        mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr;
        mreq.imr_interface.s_addr = 0;
@@ -153,12 +153,12 @@ int mcast_user_write(int fd, void *buf, int len, struct mcast_data *pri)
 {
        struct sockaddr_in *data_addr = pri->mcast_addr;
 
-       return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+       return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr));
 }
 
 static int mcast_set_mtu(int mtu, void *data)
 {
-       return(mtu);
+       return mtu;
 }
 
 const struct net_user_info mcast_user_info = {

diff --git a/arch/um/drivers/pcap_user.c b/arch/um/drivers/pcap_user.c
index 11921a7..a1747dc 100644 (file)
--- a/arch/um/drivers/pcap_user.c
+++ b/arch/um/drivers/pcap_user.c
@@ -42,39 +42,39 @@ static int pcap_open(void *data)
        int err;
 
        if(pri->pcap == NULL)
-               return(-ENODEV);
+               return -ENODEV;
 
        if(pri->filter != NULL){
                err = dev_netmask(pri->dev, &netmask);
                if(err < 0){
                        printk("pcap_open : dev_netmask failed\n");
-                       return(-EIO);
+                       return -EIO;
                }
 
                pri->compiled = um_kmalloc(sizeof(struct bpf_program));
                if(pri->compiled == NULL){
                        printk("pcap_open : kmalloc failed\n");
-                       return(-ENOMEM);
+                       return -ENOMEM;
                }
-               
+
                err = pcap_compile(pri->pcap, 
                                   (struct bpf_program *) pri->compiled, 
                                   pri->filter, pri->optimize, netmask);
                if(err < 0){
                        printk("pcap_open : pcap_compile failed - '%s'\n", 
                               pcap_geterr(pri->pcap));
-                       return(-EIO);
+                       return -EIO;
                }
 
                err = pcap_setfilter(pri->pcap, pri->compiled);
                if(err < 0){
                        printk("pcap_open : pcap_setfilter failed - '%s'\n", 
                               pcap_geterr(pri->pcap));
-                       return(-EIO);
+                       return -EIO;
                }
        }
-       
-       return(PCAP_FD(pri->pcap));
+
+       return PCAP_FD(pri->pcap);
 }
 
 static void pcap_remove(void *data)
@@ -114,11 +114,11 @@ int pcap_user_read(int fd, void *buffer, int len, struct pcap_data *pri)
        n = pcap_dispatch(pri->pcap, 1, handler, (u_char *) &hdata);
        if(n < 0){
                printk("pcap_dispatch failed - %s\n", pcap_geterr(pri->pcap));
-               return(-EIO);
+               return -EIO;
        }
        else if(n == 0) 
-               return(0);
-       return(hdata.len);
+               return 0;
+       return hdata.len;
 }
 
 const struct net_user_info pcap_user_info = {
@@ -131,14 +131,3 @@ const struct net_user_info pcap_user_info = {
        .delete_address = NULL,
        .max_packet     = MAX_PACKET - ETH_HEADER_OTHER
 };
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

diff --git a/arch/um/drivers/ubd_user.c b/arch/um/drivers/ubd_user.c
index b94d2bc..039572c 100644 (file)
--- a/arch/um/drivers/ubd_user.c
+++ b/arch/um/drivers/ubd_user.c
@@ -47,8 +47,8 @@ int start_io_thread(unsigned long sp, int *fd_out)
        pid = clone(io_thread, (void *) sp, CLONE_FILES | CLONE_VM | SIGCHLD,
                    NULL);
        if(pid < 0){
-               printk("start_io_thread - clone failed : errno = %d\n", errno);
                err = -errno;
+               printk("start_io_thread - clone failed : errno = %d\n", errno);
                goto out_close;
        }
 
@@ -60,16 +60,5 @@ int start_io_thread(unsigned long sp, int *fd_out)
        kernel_fd = -1;
        *fd_out = -1;
  out:
-       return(err);
+       return err;
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c
index 863981b..f3ad0da 100644 (file)
--- a/arch/um/os-Linux/drivers/ethertap_user.c
+++ b/arch/um/os-Linux/drivers/ethertap_user.c
@@ -121,7 +121,7 @@ static int etap_tramp(char *dev, char *gate, int control_me,
        n = os_read_file(control_me, &c, sizeof(c));
        if(n != sizeof(c)){
                printk("etap_tramp : read of status failed, err = %d\n", -n);
-               return(-EINVAL);
+               return -EINVAL;
        }
        if(c != 1){
                printk("etap_tramp : uml_net failed\n");
@@ -132,7 +132,7 @@ static int etap_tramp(char *dev, char *gate, int control_me,
                else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1))
                        printk("uml_net didn't exit with status 1\n");
        }
-       return(err);
+       return err;
 }
 
 static int etap_open(void *data)
@@ -142,20 +142,21 @@ static int etap_open(void *data)
        int data_fds[2], control_fds[2], err, output_len;
 
        err = tap_open_common(pri->dev, pri->gate_addr);
-       if(err) return(err);
+       if(err)
+               return err;
 
        err = os_pipe(data_fds, 0, 0);
        if(err < 0){
                printk("data os_pipe failed - err = %d\n", -err);
-               return(err);
+               return err;
        }
 
        err = os_pipe(control_fds, 1, 0);
        if(err < 0){
                printk("control os_pipe failed - err = %d\n", -err);
-               return(err);
+               return err;
        }
-       
+
        err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0], 
                         control_fds[1], data_fds[0], data_fds[1]);
        output_len = page_size();
@@ -171,13 +172,13 @@ static int etap_open(void *data)
 
        if(err < 0){
                printk("etap_tramp failed - err = %d\n", -err);
-               return(err);
+               return err;
        }
 
        pri->data_fd = data_fds[0];
        pri->control_fd = control_fds[0];
        iter_addresses(pri->dev, etap_open_addr, &pri->control_fd);
-       return(data_fds[0]);
+       return data_fds[0];
 }
 
 static void etap_close(int fd, void *data)
@@ -195,7 +196,7 @@ static void etap_close(int fd, void *data)
 
 static int etap_set_mtu(int mtu, void *data)
 {
-       return(mtu);
+       return mtu;
 }
 
 static void etap_add_addr(unsigned char *addr, unsigned char *netmask,
@@ -204,7 +205,8 @@ static void etap_add_addr(unsigned char *addr, unsigned char *netmask,
        struct ethertap_data *pri = data;
 
        tap_check_ips(pri->gate_addr, addr);
-       if(pri->control_fd == -1) return;
+       if(pri->control_fd == -1)
+               return;
        etap_open_addr(addr, netmask, &pri->control_fd);
 }
 
@@ -213,7 +215,8 @@ static void etap_del_addr(unsigned char *addr, unsigned char *netmask,
 {
        struct ethertap_data *pri = data;
 
-       if(pri->control_fd == -1) return;
+       if(pri->control_fd == -1)
+               return;
        etap_close_addr(addr, netmask, &pri->control_fd);
 }
 
@@ -227,14 +230,3 @@ const struct net_user_info ethertap_user_info = {
        .delete_address = etap_del_addr,
        .max_packet     = MAX_PACKET - ETH_HEADER_ETHERTAP
 };
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c
index e846b23..ab63fb6 100644 (file)
--- a/arch/um/os-Linux/drivers/tuntap_user.c
+++ b/arch/um/os-Linux/drivers/tuntap_user.c
@@ -37,7 +37,8 @@ static void tuntap_add_addr(unsigned char *addr, unsigned char *netmask,
        struct tuntap_data *pri = data;
 
        tap_check_ips(pri->gate_addr, addr);
-       if((pri->fd == -1) || pri->fixed_config) return;
+       if((pri->fd == -1) || pri->fixed_config)
+               return;
        open_addr(addr, netmask, pri->dev_name);
 }
 
@@ -46,7 +47,8 @@ static void tuntap_del_addr(unsigned char *addr, unsigned char *netmask,
 {
        struct tuntap_data *pri = data;
 
-       if((pri->fd == -1) || pri->fixed_config) return;
+       if((pri->fd == -1) || pri->fixed_config)
+               return;
        close_addr(addr, netmask, pri->dev_name);
 }
 
@@ -58,7 +60,7 @@ struct tuntap_pre_exec_data {
 static void tuntap_pre_exec(void *arg)
 {
        struct tuntap_pre_exec_data *data = arg;
-       
+
        dup2(data->stdout, 1);
        os_close_file(data->close_me);
 }
@@ -83,7 +85,8 @@ static int tuntap_open_tramp(char *gate, int *fd_out, int me, int remote,
 
        pid = run_helper(tuntap_pre_exec, &data, argv, NULL);
 
-       if(pid < 0) return(-pid);
+       if(pid < 0)
+               return -pid;
 
        os_close_file(remote);
 
@@ -114,16 +117,16 @@ static int tuntap_open_tramp(char *gate, int *fd_out, int me, int remote,
        cmsg = CMSG_FIRSTHDR(&msg);
        if(cmsg == NULL){
                printk("tuntap_open_tramp : didn't receive a message\n");
-               return(-EINVAL);
+               return -EINVAL;
        }
        if((cmsg->cmsg_level != SOL_SOCKET) || 
           (cmsg->cmsg_type != SCM_RIGHTS)){
                printk("tuntap_open_tramp : didn't receive a descriptor\n");
-               return(-EINVAL);
+               return -EINVAL;
        }
        *fd_out = ((int *) CMSG_DATA(cmsg))[0];
        os_set_exec_close(*fd_out, 1);
-       return(0);
+       return 0;
 }
 
 static int tuntap_open(void *data)
@@ -135,7 +138,7 @@ static int tuntap_open(void *data)
 
        err = tap_open_common(pri->dev, pri->gate_addr);
        if(err < 0)
-               return(err);
+               return err;
 
        if(pri->fixed_config){
                pri->fd = os_open_file("/dev/net/tun",
@@ -143,7 +146,7 @@ static int tuntap_open(void *data)
                if(pri->fd < 0){
                        printk("Failed to open /dev/net/tun, err = %d\n",
                               -pri->fd);
-                       return(pri->fd);
+                       return pri->fd;
                }
                memset(&ifr, 0, sizeof(ifr));
                ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
@@ -160,7 +163,7 @@ static int tuntap_open(void *data)
                if(err < 0){
                        printk("tuntap_open : os_pipe failed - err = %d\n",
                               -err);
-                       return(err);
+                       return err;
                }
 
                buffer = get_output_buffer(&len);
@@ -175,7 +178,7 @@ static int tuntap_open(void *data)
                        printk("%s", output);
                        free_output_buffer(buffer);
                        printk("tuntap_open_tramp failed - err = %d\n", -err);
-                       return(err);
+                       return err;
                }
 
                pri->dev_name = uml_strdup(buffer);
@@ -187,7 +190,7 @@ static int tuntap_open(void *data)
                iter_addresses(pri->dev, open_addr, pri->dev_name);
        }
 
-       return(pri->fd);
+       return pri->fd;
 }
 
 static void tuntap_close(int fd, void *data)
@@ -202,7 +205,7 @@ static void tuntap_close(int fd, void *data)
 
 static int tuntap_set_mtu(int mtu, void *data)
 {
-       return(mtu);
+       return mtu;
 }
 
 const struct net_user_info tuntap_user_info = {
@@ -215,14 +218,3 @@ const struct net_user_info tuntap_user_info = {
        .delete_address = tuntap_del_addr,
        .max_packet     = MAX_PACKET
 };
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */