11 files changed, 45 insertions, 73 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 68242bda4b9c..3a0a55b62aaf 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -589,7 +589,7 @@ config EL2
 
 config ELPLUS
         tristate "3c505 \"EtherLink Plus\" support"
-        depends on NET_VENDOR_3COM && ISA
+        depends on NET_VENDOR_3COM && ISA && ISA_DMA_API
         ---help---
           Information about this network (Ethernet) card can be found in
           <file:Documentation/networking/3c505.txt>.  If you have a card of
@@ -630,7 +630,7 @@ config EL3
 
 config 3C515
         tristate "3c515 ISA \"Fast EtherLink\""
-        depends on NET_VENDOR_3COM && (ISA || EISA)
+        depends on NET_VENDOR_3COM && (ISA || EISA) && ISA_DMA_API
         help
           If you have a 3Com ISA EtherLink XL "Corkscrew" 3c515 Fast Ethernet
           network card, say Y and read the Ethernet-HOWTO, available from
@@ -708,7 +708,7 @@ config TYPHOON
 
 config LANCE
         tristate "AMD LANCE and PCnet (AT1500 and NE2100) support"
-        depends on NET_ETHERNET && ISA
+        depends on NET_ETHERNET && ISA && ISA_DMA_API
         help
           If you have a network (Ethernet) card of this type, say Y and read
           the Ethernet-HOWTO, available from
@@ -864,7 +864,7 @@ config NI52
 
 config NI65
         tristate "NI6510 support"
-        depends on NET_VENDOR_RACAL && ISA
+        depends on NET_VENDOR_RACAL && ISA && ISA_DMA_API
         help
           If you have a network (Ethernet) card of this type, say Y and read
           the Ethernet-HOWTO, available from
@@ -1072,7 +1072,7 @@ config NE2000
 
 config ZNET
         tristate "Zenith Z-Note support (EXPERIMENTAL)"
-        depends on NET_ISA && EXPERIMENTAL
+        depends on NET_ISA && EXPERIMENTAL && ISA_DMA_API
         help
           The Zenith Z-Note notebook computer has a built-in network
           (Ethernet) card, and this is the Linux driver for it. Note that the
diff --git a/drivers/net/appletalk/Kconfig b/drivers/net/appletalk/Kconfig
index 60b19679ca5c..69c488d933a2 100644
--- a/drivers/net/appletalk/Kconfig
+++ b/drivers/net/appletalk/Kconfig
@@ -13,7 +13,7 @@ config DEV_APPLETALK
 
 config LTPC
         tristate "Apple/Farallon LocalTalk PC support"
-        depends on DEV_APPLETALK && (ISA || EISA)
+        depends on DEV_APPLETALK && (ISA || EISA) && ISA_DMA_API
         help
           This allows you to use the AppleTalk PC card to connect to LocalTalk
           networks. The card is also known as the Farallon PhoneNet PC card.
diff --git a/drivers/net/hamradio/Kconfig b/drivers/net/hamradio/Kconfig
index 34068f81d45e..7cdebe1a0b61 100644
--- a/drivers/net/hamradio/Kconfig
+++ b/drivers/net/hamradio/Kconfig
@@ -45,7 +45,7 @@ config BPQETHER
 
 config DMASCC
         tristate "High-speed (DMA) SCC driver for AX.25"
-        depends on ISA && AX25 && BROKEN_ON_SMP
+        depends on ISA && AX25 && BROKEN_ON_SMP && ISA_DMA_API
         ---help---
           This is a driver for high-speed SCC boards, i.e. those supporting
           DMA on one port. You usually use those boards to connect your
@@ -78,7 +78,7 @@ config DMASCC
 
 config SCC
         tristate "Z8530 SCC driver"
-        depends on ISA && AX25
+        depends on ISA && AX25 && ISA_DMA_API
         ---help---
           These cards are used to connect your Linux box to an amateur radio
           in order to communicate with other computers. If you want to use
diff --git a/drivers/net/irda/Kconfig b/drivers/net/irda/Kconfig
index 6bf76a444d48..1c553d7efdd9 100644
--- a/drivers/net/irda/Kconfig
+++ b/drivers/net/irda/Kconfig
@@ -310,7 +310,7 @@ config SIGMATEL_FIR
 
 config NSC_FIR
         tristate "NSC PC87108/PC87338"
-        depends on IRDA
+        depends on IRDA && ISA_DMA_API
         help
           Say Y here if you want to build support for the NSC PC87108 and
           PC87338 IrDA chipsets.  This driver supports SIR,
@@ -321,7 +321,7 @@ config NSC_FIR
 
 config WINBOND_FIR
         tristate "Winbond W83977AF (IR)"
-        depends on IRDA
+        depends on IRDA && ISA_DMA_API
         help
           Say Y here if you want to build IrDA support for the Winbond
           W83977AF super-io chipset.  This driver should be used for the IrDA
@@ -347,7 +347,7 @@ config AU1000_FIR
 
 config SMC_IRCC_FIR
         tristate "SMSC IrCC (EXPERIMENTAL)"
-        depends on EXPERIMENTAL && IRDA
+        depends on EXPERIMENTAL && IRDA && ISA_DMA_API
         help
           Say Y here if you want to build support for the SMC Infrared
           Communications Controller.  It is used in a wide variety of
@@ -357,7 +357,7 @@ config SMC_IRCC_FIR
 
 config ALI_FIR
         tristate "ALi M5123 FIR (EXPERIMENTAL)"
-        depends on EXPERIMENTAL && IRDA
+        depends on EXPERIMENTAL && IRDA && ISA_DMA_API
         help
           Say Y here if you want to build support for the ALi M5123 FIR
           Controller.  The ALi M5123 FIR Controller is embedded in ALi M1543C,
@@ -385,7 +385,7 @@ config SA1100_FIR
 
 config VIA_FIR
         tristate "VIA VT8231/VT1211 SIR/MIR/FIR"
-        depends on IRDA
+        depends on IRDA && ISA_DMA_API
         help
           Say Y here if you want to build support for the VIA VT8231
           and VIA VT1211 IrDA controllers, found on the motherboards using
diff --git a/drivers/net/ppp_deflate.c b/drivers/net/ppp_deflate.c
index 507d6328d4eb..3872088fdd10 100644
--- a/drivers/net/ppp_deflate.c
+++ b/drivers/net/ppp_deflate.c
@@ -87,8 +87,7 @@ static void z_comp_free(void *arg)
 
         if (state) {
                 zlib_deflateEnd(&state->strm);
-                if (state->strm.workspace)
-                        vfree(state->strm.workspace);
+                vfree(state->strm.workspace);
                 kfree(state);
         }
 }
@@ -308,8 +307,7 @@ static void z_decomp_free(void *arg)
 
         if (state) {
                 zlib_inflateEnd(&state->strm);
-                if (state->strm.workspace)
-                        kfree(state->strm.workspace);
+                kfree(state->strm.workspace);
                 kfree(state);
         }
 }
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index c456dc81b873..3b377f6cd4a0 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -2467,14 +2467,10 @@ static void ppp_destroy_interface(struct ppp *ppp)
         skb_queue_purge(&ppp->mrq);
 #endif /* CONFIG_PPP_MULTILINK */
 #ifdef CONFIG_PPP_FILTER
-        if (ppp->pass_filter) {
-                kfree(ppp->pass_filter);
-                ppp->pass_filter = NULL;
-        }
-        if (ppp->active_filter) {
-                kfree(ppp->active_filter);
-                ppp->active_filter = NULL;
-        }
+        kfree(ppp->pass_filter);
+        ppp->pass_filter = NULL;
+        kfree(ppp->active_filter);
+        ppp->active_filter = NULL;
 #endif /* CONFIG_PPP_FILTER */
 
         kfree(ppp);
diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig
index 35791934a602..66b94668ddd8 100644
--- a/drivers/net/wan/Kconfig
+++ b/drivers/net/wan/Kconfig
@@ -26,7 +26,7 @@ config WAN
 # There is no way to detect a comtrol sv11 - force it modular for now.
 config HOSTESS_SV11
         tristate "Comtrol Hostess SV-11 support"
-        depends on WAN && ISA && m
+        depends on WAN && ISA && m && ISA_DMA_API
         help
           Driver for Comtrol Hostess SV-11 network card which
           operates on low speed synchronous serial links at up to
@@ -38,7 +38,7 @@ config HOSTESS_SV11
 # The COSA/SRP driver has not been tested as non-modular yet.
 config COSA
         tristate "COSA/SRP sync serial boards support"
-        depends on WAN && ISA && m
+        depends on WAN && ISA && m && ISA_DMA_API
         ---help---
           Driver for COSA and SRP synchronous serial boards.
 
@@ -127,7 +127,7 @@ config LANMEDIA
 # There is no way to detect a Sealevel board. Force it modular
 config SEALEVEL_4021
         tristate "Sealevel Systems 4021 support"
-        depends on WAN && ISA && m
+        depends on WAN && ISA && m && ISA_DMA_API
         help
           This is a driver for the Sealevel Systems ACB 56 serial I/O adapter.
 
diff --git a/drivers/net/wan/cycx_x25.c b/drivers/net/wan/cycx_x25.c
index 5b48cd8568f5..02d57c0b4243 100644
--- a/drivers/net/wan/cycx_x25.c
+++ b/drivers/net/wan/cycx_x25.c
@@ -436,9 +436,7 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
         }
 
         if (err) {
-                if (chan->local_addr)
-                        kfree(chan->local_addr);
-
+                kfree(chan->local_addr);
                 kfree(chan);
                 return err;
         }
@@ -458,9 +456,7 @@ static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev)
                 struct cycx_x25_channel *chan = dev->priv;
 
                 if (chan->svc) {
-                        if (chan->local_addr)
-                                kfree(chan->local_addr);
-
+                        kfree(chan->local_addr);
                         if (chan->state == WAN_CONNECTED)
                                 del_timer(&chan->timer);
                 }
diff --git a/drivers/net/wan/pc300_tty.c b/drivers/net/wan/pc300_tty.c
index 29f84ad08730..8454bf6caaa7 100644
--- a/drivers/net/wan/pc300_tty.c
+++ b/drivers/net/wan/pc300_tty.c
@@ -400,10 +400,8 @@ static void cpc_tty_close(struct tty_struct *tty, struct file *flip)
                 cpc_tty->buf_rx.last = NULL;
         }
         
-        if (cpc_tty->buf_tx) {
-                kfree(cpc_tty->buf_tx);
-                cpc_tty->buf_tx = NULL;
-        }
+        kfree(cpc_tty->buf_tx);
+        cpc_tty->buf_tx = NULL;
 
         CPC_TTY_DBG("%s: TTY closed\n",cpc_tty->name);
         
@@ -666,7 +664,7 @@ static void cpc_tty_rx_work(void * data)
         unsigned long port;
         int i, j;
         st_cpc_tty_area *cpc_tty; 
-        volatile st_cpc_rx_buf * buf;
+        volatile st_cpc_rx_buf *buf;
         char flags=0,flg_rx=1; 
         struct tty_ldisc *ld;
 
@@ -680,9 +678,9 @@ static void cpc_tty_rx_work(void * data)
                         cpc_tty = &cpc_tty_area[port];
                 
                         if ((buf=cpc_tty->buf_rx.first) != 0) {
-                                if(cpc_tty->tty) {
+                                if (cpc_tty->tty) {
                                         ld = tty_ldisc_ref(cpc_tty->tty);
-                                        if(ld) {
+                                        if (ld) {
                                                 if (ld->receive_buf) {
                                                         CPC_TTY_DBG("%s: call line disc. receive_buf\n",cpc_tty->name);
                                                         ld->receive_buf(cpc_tty->tty, (char *)(buf->data), &flags, buf->size);
@@ -691,7 +689,7 @@ static void cpc_tty_rx_work(void * data)
                                         }
                                 }       
                                 cpc_tty->buf_rx.first = cpc_tty->buf_rx.first->next;
-                                kfree((unsigned char *)buf);
+                                kfree(buf);
                                 buf = cpc_tty->buf_rx.first;
                                 flg_rx = 1;
                         }
@@ -733,7 +731,7 @@ static void cpc_tty_rx_disc_frame(pc300ch_t *pc300chan)
 
 void cpc_tty_receive(pc300dev_t *pc300dev)
 {
-        st_cpc_tty_area    *cpc_tty; 
+        st_cpc_tty_area *cpc_tty; 
         pc300ch_t *pc300chan = (pc300ch_t *)pc300dev->chan; 
         pc300_t *card = (pc300_t *)pc300chan->card; 
         int ch = pc300chan->channel; 
@@ -742,7 +740,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
         int rx_len, rx_aux; 
         volatile unsigned char status; 
         unsigned short first_bd = pc300chan->rx_first_bd;
-        st_cpc_rx_buf   *new=NULL;
+        st_cpc_rx_buf *new = NULL;
         unsigned char dsr_rx;
 
         if (pc300dev->cpc_tty == NULL) { 
@@ -762,7 +760,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
                         if (status & DST_EOM) {
                                 break;
                         }
-                        ptdescr=(pcsca_bd_t __iomem *)(card->hw.rambase+cpc_readl(&ptdescr->next));
+                        ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase+cpc_readl(&ptdescr->next));
                 }
                         
                 if (!rx_len) { 
@@ -771,10 +769,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
                                 cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch), 
                                                 RX_BD_ADDR(ch, pc300chan->rx_last_bd)); 
                         }
-                        if (new) {
-                                kfree(new);
-                                new = NULL;
-                        }
+                        kfree(new);
                         return; 
                 }
                 
@@ -787,7 +782,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
                         continue;
                 } 
                 
-                new = (st_cpc_rx_buf *) kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
+                new = (st_cpc_rx_buf *)kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
                 if (new == 0) {
                         cpc_tty_rx_disc_frame(pc300chan);
                         continue;
diff --git a/drivers/net/wan/sdla_chdlc.c b/drivers/net/wan/sdla_chdlc.c
index afbe0024e3e1..496d29237e92 100644
--- a/drivers/net/wan/sdla_chdlc.c
+++ b/drivers/net/wan/sdla_chdlc.c
@@ -3664,15 +3664,10 @@ static void wanpipe_tty_close(struct tty_struct *tty, struct file * filp)
                 chdlc_disable_comm_shutdown(card);
                 unlock_adapter_irq(&card->wandev.lock,&smp_flags);
 
-                if (card->tty_buf){
-                        kfree(card->tty_buf);
-                        card->tty_buf=NULL;                     
-                }
-
-                if (card->tty_rx){
-                        kfree(card->tty_rx);
-                        card->tty_rx=NULL;
-                }
+                kfree(card->tty_buf);
+                card->tty_buf = NULL;                   
+                kfree(card->tty_rx);
+                card->tty_rx = NULL;
         }
         return;
 }
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index 8c5cfcb55826..1c540d825551 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -107,13 +107,9 @@ static struct x25_asy *x25_asy_alloc(void)
 static void x25_asy_free(struct x25_asy *sl)
 {
         /* Free all X.25 frame buffers. */
-        if (sl->rbuff)  {
-                kfree(sl->rbuff);
-        }
+        kfree(sl->rbuff);
         sl->rbuff = NULL;
-        if (sl->xbuff)  {
-                kfree(sl->xbuff);
-        }
+        kfree(sl->xbuff);
         sl->xbuff = NULL;
 
         if (!test_and_clear_bit(SLF_INUSE, &sl->flags)) {
@@ -134,10 +130,8 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu)
         {
                 printk("%s: unable to grow X.25 buffers, MTU change cancelled.\n",
                        dev->name);
-                if (xbuff != NULL)  
-                        kfree(xbuff);
-                if (rbuff != NULL)  
-                        kfree(rbuff);
+                kfree(xbuff);
+                kfree(rbuff);
                 return -ENOMEM;
         }
 
@@ -169,10 +163,8 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu)
 
         spin_unlock_bh(&sl->lock);
 
-        if (xbuff != NULL) 
-                kfree(xbuff);
-        if (rbuff != NULL)
-                kfree(rbuff);
+        kfree(xbuff);
+        kfree(rbuff);
         return 0;
 }