linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / drivers / char / stallion.c

diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index a9c5a72..bdaab69 100644 (file)
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -148,6 +148,7 @@ static struct tty_driver    *stl_serial;
  *     is already swapping a shared buffer won't make things any worse.
  */
 static char                    *stl_tmpwritebuf;
+static DECLARE_MUTEX(stl_tmpwritesem);
 
 /*
  *     Define a local default termios struct. All ports will be created
@@ -504,6 +505,7 @@ static int  stl_echmcaintr(stlbrd_t *brdp);
 static int     stl_echpciintr(stlbrd_t *brdp);
 static int     stl_echpci64intr(stlbrd_t *brdp);
 static void    stl_offintr(void *private);
+static void    *stl_memalloc(int len);
 static stlbrd_t *stl_allocbrd(void);
 static stlport_t *stl_getport(int brdnr, int panelnr, int portnr);
 
@@ -938,6 +940,17 @@ static int stl_parsebrd(stlconf_t *confp, char **argp)
 
 /*****************************************************************************/
 
+/*
+ *     Local driver kernel memory allocation routine.
+ */
+
+static void *stl_memalloc(int len)
+{
+       return (void *) kmalloc(len, GFP_KERNEL);
+}
+
+/*****************************************************************************/
+
 /*
  *     Allocate a new board structure. Fill out the basic info in it.
  */
@@ -946,13 +959,14 @@ static stlbrd_t *stl_allocbrd(void)
 {
        stlbrd_t        *brdp;
 
-       brdp = kzalloc(sizeof(stlbrd_t), GFP_KERNEL);
-       if (!brdp) {
+       brdp = (stlbrd_t *) stl_memalloc(sizeof(stlbrd_t));
+       if (brdp == (stlbrd_t *) NULL) {
                printk("STALLION: failed to allocate memory (size=%d)\n",
                        sizeof(stlbrd_t));
-               return NULL;
+               return (stlbrd_t *) NULL;
        }
 
+       memset(brdp, 0, sizeof(stlbrd_t));
        brdp->magic = STL_BOARDMAGIC;
        return brdp;
 }
@@ -1004,9 +1018,9 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
        portp->refcount++;
 
        if ((portp->flags & ASYNC_INITIALIZED) == 0) {
-               if (!portp->tx.buf) {
-                       portp->tx.buf = kmalloc(STL_TXBUFSIZE, GFP_KERNEL);
-                       if (!portp->tx.buf)
+               if (portp->tx.buf == (char *) NULL) {
+                       portp->tx.buf = (char *) stl_memalloc(STL_TXBUFSIZE);
+                       if (portp->tx.buf == (char *) NULL)
                                return -ENOMEM;
                        portp->tx.head = portp->tx.buf;
                        portp->tx.tail = portp->tx.buf;
@@ -2165,12 +2179,13 @@ static int __init stl_initports(stlbrd_t *brdp, stlpanel_t *panelp)
  *     each ports data structures.
  */
        for (i = 0; (i < panelp->nrports); i++) {
-               portp = kzalloc(sizeof(stlport_t), GFP_KERNEL);
-               if (!portp) {
+               portp = (stlport_t *) stl_memalloc(sizeof(stlport_t));
+               if (portp == (stlport_t *) NULL) {
                        printk("STALLION: failed to allocate memory "
                                "(size=%d)\n", sizeof(stlport_t));
                        break;
                }
+               memset(portp, 0, sizeof(stlport_t));
 
                portp->magic = STL_PORTMAGIC;
                portp->portnr = i;
@@ -2301,12 +2316,13 @@ static inline int stl_initeio(stlbrd_t *brdp)
  *     can complete the setup.
  */
 
-       panelp = kzalloc(sizeof(stlpanel_t), GFP_KERNEL);
-       if (!panelp) {
+       panelp = (stlpanel_t *) stl_memalloc(sizeof(stlpanel_t));
+       if (panelp == (stlpanel_t *) NULL) {
                printk(KERN_WARNING "STALLION: failed to allocate memory "
                        "(size=%d)\n", sizeof(stlpanel_t));
-               return -ENOMEM;
+               return(-ENOMEM);
        }
+       memset(panelp, 0, sizeof(stlpanel_t));
 
        panelp->magic = STL_PANELMAGIC;
        panelp->brdnr = brdp->brdnr;
@@ -2475,12 +2491,13 @@ static inline int stl_initech(stlbrd_t *brdp)
                status = inb(ioaddr + ECH_PNLSTATUS);
                if ((status & ECH_PNLIDMASK) != nxtid)
                        break;
-               panelp = kzalloc(sizeof(stlpanel_t), GFP_KERNEL);
-               if (!panelp) {
+               panelp = (stlpanel_t *) stl_memalloc(sizeof(stlpanel_t));
+               if (panelp == (stlpanel_t *) NULL) {
                        printk("STALLION: failed to allocate memory "
                                "(size=%d)\n", sizeof(stlpanel_t));
                        break;
                }
+               memset(panelp, 0, sizeof(stlpanel_t));
                panelp->magic = STL_PANELMAGIC;
                panelp->brdnr = brdp->brdnr;
                panelp->panelnr = panelnr;
@@ -3058,8 +3075,8 @@ static int __init stl_init(void)
 /*
  *     Allocate a temporary write buffer.
  */
-       stl_tmpwritebuf = kmalloc(STL_TXBUFSIZE, GFP_KERNEL);
-       if (!stl_tmpwritebuf)
+       stl_tmpwritebuf = (char *) stl_memalloc(STL_TXBUFSIZE);
+       if (stl_tmpwritebuf == (char *) NULL)
                printk("STALLION: failed to allocate memory (size=%d)\n",
                        STL_TXBUFSIZE);