staging: cxt1e1: musycc.c: Use NULL instead of 0

Pointers should be assigned NULL instead of 0.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/cxt1e1/musycc.c b/drivers/staging/cxt1e1/musycc.c
index 52b6d7f..a2a2af1 100644 (file)
--- a/drivers/staging/cxt1e1/musycc.c
+++ b/drivers/staging/cxt1e1/musycc.c
@@ -745,7 +745,7 @@ musycc_init(ci_t *ci)
 #define INT_QUEUE_BOUNDARY  4
 
     regaddr = OS_kmalloc((INT_QUEUE_SIZE + 1) * sizeof(u_int32_t));
-    if (regaddr == 0)
+    if (!regaddr)
        return ENOMEM;
     ci->iqd_p_saved = regaddr;      /* save orig value for free's usage */
     ci->iqd_p = (u_int32_t *) ((unsigned long) (regaddr + INT_QUEUE_BOUNDARY - 1) &
@@ -766,11 +766,11 @@ musycc_init(ci_t *ci)
 #define GROUP_BOUNDARY   0x800
 
        regaddr = OS_kmalloc(sizeof(struct musycc_groupr) + GROUP_BOUNDARY);
-       if (regaddr == 0) {
+       if (!regaddr) {
            for (gchan = 0; gchan < i; gchan++) {
                pi = &ci->port[gchan];
                OS_kfree(pi->reg);
-               pi->reg = 0;
+               pi->reg = NULL;
            }
            return ENOMEM;
        }
@@ -839,12 +839,12 @@ musycc_bh_tx_eom(mpi_t *pi, int gchan)
     volatile u_int32_t status;
 
     ch = pi->chan[gchan];
-    if (ch == 0 || ch->state != UP) {
+    if (!ch || ch->state != UP) {
        if (cxt1e1_log_level >= LOG_ERROR)
            pr_info("%s: intr: xmit EOM on uninitialized channel %d\n",
                    pi->up->devname, gchan);
     }
-    if (ch == 0 || ch->mdt == 0)
+    if (!ch || !ch->mdt)
        return;                     /* note: mdt==0 implies a malloc()
                                     * failure w/in chan_up() routine */
 
@@ -907,7 +907,7 @@ musycc_bh_tx_eom(mpi_t *pi, int gchan)
        ch->txd_irq_srv = md->snext;
 
        md->data = 0;
-       if (md->mem_token != 0) {
+       if (md->mem_token)      {
            /* upcount channel */
            atomic_sub(OS_mem_token_tlen(md->mem_token), &ch->tx_pending);
            /* upcount card */
@@ -931,7 +931,7 @@ musycc_bh_tx_eom(mpi_t *pi, int gchan)
 #endif                              /*** CONFIG_SBE_WAN256T3_NCOMM ***/
 
            OS_mem_token_free_irq(md->mem_token);
-           md->mem_token = 0;
+           md->mem_token = NULL;
        }
        md->status = 0;
 #ifdef RLD_TXFULL_DEBUG
@@ -1012,13 +1012,13 @@ musycc_bh_rx_eom(mpi_t *pi, int gchan)
     u_int32_t   error;
 
     ch = pi->chan[gchan];
-    if (ch == 0 || ch->state != UP) {
+    if (!ch || ch->state != UP) {
        if (cxt1e1_log_level > LOG_ERROR)
            pr_info("%s: intr: receive EOM on uninitialized channel %d\n",
                    pi->up->devname, gchan);
        return;
     }
-    if (ch->mdr == 0)
+    if (!ch->mdr)
        return;                     /* can this happen ? */
 
     for (;;) {
@@ -1566,18 +1566,18 @@ musycc_chan_down(ci_t *dummy, int channum)
     pi->regram->rmp[gchan] = 0;
     FLUSH_MEM_WRITE();
     for (i = 0; i < ch->txd_num; i++)
-       if (ch->mdt[i].mem_token != 0)
+       if (ch->mdt[i].mem_token)
            OS_mem_token_free(ch->mdt[i].mem_token);
 
     for (i = 0; i < ch->rxd_num; i++)
-       if (ch->mdr[i].mem_token != 0)
+       if (ch->mdr[i].mem_token)
            OS_mem_token_free(ch->mdr[i].mem_token);
 
     OS_kfree(ch->mdr);
-    ch->mdr = 0;
+    ch->mdr = NULL;
     ch->rxd_num = 0;
     OS_kfree(ch->mdt);
-    ch->mdt = 0;
+    ch->mdt = NULL;
     ch->txd_num = 0;
 
     musycc_update_timeslots(pi);
@@ -1746,7 +1746,7 @@ musycc_start_xmit(ci_t *ci, int channum, void *mem_token)
 #endif
            u |= (PADFILL_ENABLE | (ch->p.pad_fill_count << EXTRA_FLAGS));
        }
-       md->mem_token = len ? 0 : mem_token;    /* Fill in mds on last
+       md->mem_token = len ? NULL : mem_token;    /* Fill in mds on last
                                                 * segment, others set ZERO
                                                 * so that entire token is
                                                 * removed ONLY when ALL