staging: dgap: misc cleanup of NULL conditionals

refactors NULL conditionals

Signed-off-by: Mark Hounschell <markh@compro.net>
Tested-by: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c
index 65d651e..7912d98 100644 (file)
--- a/drivers/staging/dgap/dgap.c
+++ b/drivers/staging/dgap/dgap.c
@@ -2318,7 +2318,7 @@ static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
        ulong lock_flags = 0;
        ulong lock_flags2 = 0;
 
-       if (tty == NULL)
+       if (!tty)
                return 0;
 
        un = tty->driver_data;
@@ -2464,7 +2464,7 @@ static int dgap_maxcps_room(struct tty_struct *tty, int bytes_available)
        struct channel_t *ch;
        struct un_t *un;
 
-       if (tty == NULL)
+       if (!tty)
                return bytes_available;
 
        un = tty->driver_data;
@@ -4140,12 +4140,12 @@ static int dgap_tty_register_ports(struct board_t *brd)
 
        brd->serial_ports = kcalloc(brd->nasync, sizeof(*brd->serial_ports),
                                        GFP_KERNEL);
-       if (brd->serial_ports == NULL)
+       if (!brd->serial_ports)
                return -ENOMEM;
 
        brd->printer_ports = kcalloc(brd->nasync, sizeof(*brd->printer_ports),
                                        GFP_KERNEL);
-       if (brd->printer_ports == NULL)
+       if (!brd->printer_ports)
                return -ENOMEM;
 
        for (i = 0; i < brd->nasync; i++) {
@@ -6524,7 +6524,7 @@ static int dgap_parsefile(char **in, int remove)
                                return -1;
                        }
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6542,7 +6542,7 @@ static int dgap_parsefile(char **in, int remove)
                                return -1;
                        }
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6560,7 +6560,7 @@ static int dgap_parsefile(char **in, int remove)
                                return -1;
                        }
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6571,7 +6571,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p->u.board.v_pcibus = 1;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6589,7 +6589,7 @@ static int dgap_parsefile(char **in, int remove)
                                return -1;
                        }
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6603,7 +6603,7 @@ static int dgap_parsefile(char **in, int remove)
                                return -1;
                        }
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6613,7 +6613,7 @@ static int dgap_parsefile(char **in, int remove)
                case NPORTS:    /* number of ports */
                        if (p->type == BNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6624,7 +6624,7 @@ static int dgap_parsefile(char **in, int remove)
                                p->u.board.v_nport = 1;
                        } else if (p->type == CNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6635,7 +6635,7 @@ static int dgap_parsefile(char **in, int remove)
                                p->u.conc.v_nport = 1;
                        } else if (p->type == MNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6652,7 +6652,7 @@ static int dgap_parsefile(char **in, int remove)
 
                case ID:        /* letter ID used in tty name */
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6674,7 +6674,7 @@ static int dgap_parsefile(char **in, int remove)
                case STARTO:    /* start offset of ID */
                        if (p->type == BNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6685,7 +6685,7 @@ static int dgap_parsefile(char **in, int remove)
                                p->u.board.v_start = 1;
                        } else if (p->type == CNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6696,7 +6696,7 @@ static int dgap_parsefile(char **in, int remove)
                                p->u.conc.v_start = 1;
                        } else if (p->type == MNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6756,7 +6756,7 @@ static int dgap_parsefile(char **in, int remove)
                case LINE:      /* line information */
                        if (dgap_checknode(p))
                                return -1;
-                       if (brd == NULL) {
+                       if (!brd) {
                                dgap_err("must specify board before line info");
                                return -1;
                        }
@@ -6779,7 +6779,7 @@ static int dgap_parsefile(char **in, int remove)
                case CONC:      /* concentrator information */
                        if (dgap_checknode(p))
                                return -1;
-                       if (line == NULL) {
+                       if (!line) {
                                dgap_err("must specify line info before concentrator");
                                return -1;
                        }
@@ -6818,7 +6818,7 @@ static int dgap_parsefile(char **in, int remove)
                case MOD:       /* EBI module */
                        if (dgap_checknode(p))
                                return -1;
-                       if (brd == NULL) {
+                       if (!brd) {
                                dgap_err("must specify board info before EBI modules");
                                return -1;
                        }
@@ -6827,7 +6827,7 @@ static int dgap_parsefile(char **in, int remove)
                                linecnt = 0;
                                break;
                        default:
-                               if (conc == NULL) {
+                               if (!conc) {
                                        dgap_err("must specify concentrator info before EBI module");
                                        return -1;
                                }
@@ -6878,7 +6878,7 @@ static int dgap_parsefile(char **in, int remove)
                case SPEED:     /* sync line speed indication */
                        if (p->type == LNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6889,7 +6889,7 @@ static int dgap_parsefile(char **in, int remove)
                                p->u.line.v_speed = 1;
                        } else if (p->type == CNODE) {
                                s = dgap_getword(in);
-                               if (s == NULL) {
+                               if (!s) {
                                        dgap_err("unexpected end of file");
                                        return -1;
                                }
@@ -6946,7 +6946,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6966,7 +6966,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -6986,7 +6986,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -7006,7 +7006,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -7026,7 +7026,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -7046,7 +7046,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -7066,7 +7066,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -7086,7 +7086,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }
@@ -7106,7 +7106,7 @@ static int dgap_parsefile(char **in, int remove)
                        }
                        p = p->next;
                        s = dgap_getword(in);
-                       if (s == NULL) {
+                       if (!s) {
                                dgap_err("unexpected end of file");
                                return -1;
                        }