Importing files for 2.5.0-rc2 release.

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/tags/2.5.0-rc2@10075 a0bf4364-ded3-4de4-8d8a-66a801d63aff

.version

@@ -1 +1 @@
-2.5.0
+2.5.0-rc2

ChangeLog

@@ -1,32 +1,3 @@
-2011-08-05 Shaun Ruffell <sruffell@digium.com>
-
-	* dahdi-linux 2.5.0 released.
-
-2011-07-26 20:19 +0000 [r10082]  Shaun Ruffell <sruffell@digium.com>
-
-	* drivers/dahdi/wctc4xxp/base.c: wctc4xxp: Cleanup in-flight
-	  commands when halting due to hardware error. On one system I was
-	  seeing the board reset in the middle of a transaction. Any
-	  commands that were on the response list when this would happen
-	  would never be completed and the process would then be stuck in
-	  an uninterruptible sleep. This change also prevents the driver
-	  from sleeping in timer context, which would result in a kernel
-	  panic. This change at least lets an error message propogate back
-	  to the user. DAHDI-880 Signed-off-by: Shaun Ruffell
-	  <sruffell@digium.com>
-
-2011-07-22 17:56 +0000 [r10079]  Russ Meyerriecks <rmeyerreicks@digium.com>
-
-	* drivers/dahdi/wcb4xxp/base.c: wcb4xxp: Prevent null pointer
-	  dereference on spanconfig In the rare case where spanconfig is
-	  called while there is pending data on the hdlc channel, the
-	  hdlc_getbuf interrupt could try to read from the hdlc buffer
-	  before the channel was fully setup. This could potentially result
-	  in a null pointer dereference. This condition has existed since
-	  the creation of the wcb4xxp driver. Signed-off-by: Russ
-	  Meyerriecks <rmeyerriecks@digium.com> Signed-off-by: Shaun
-	  Ruffell <sruffell@digium.com>
-
 2011-07-21 Shaun Ruffell <sruffell@digium.com>
 
 	* dahdi-linux version 2.5.0-rc2 released.

drivers/dahdi/wcb4xxp/base.c

@@ -2375,9 +2375,6 @@ b4xxp_chanconfig(struct file *file, struct dahdi_chan *chan, int sigtype)
 
 		if (alreadyrunning && bspan->sigchan) {
 			hdlc_stop(b4, fifo);
-			atomic_set(&bspan->hdlc_pending, 0);
-			bspan->sigactive = 0;
-			smp_mb();
 			bspan->sigchan = NULL;
 		}
 

drivers/dahdi/wctc4xxp/base.c

@@ -1614,20 +1614,6 @@ wctc4xxp_transmit_cmd(struct wcdte *wc, struct tcb *cmd)
 {
 	int res;
 
-	/* If we're shutdown all commands will timeout. Just complete the
-	 * command here with the timeout flag */
-	if (unlikely(test_bit(DTE_SHUTDOWN, &wc->flags))) {
-		if (cmd->flags & DO_NOT_AUTO_FREE) {
-			cmd->flags |= DTE_CMD_TIMEOUT;
-			list_del_init(&cmd->node);
-			complete(&cmd->complete);
-		} else {
-			list_del(&cmd->node);
-			free_cmd(cmd);
-		}
-		return;
-	}
-
 	if (cmd->data_len < MIN_PACKET_LEN) {
 		memset((u8 *)(cmd->data) + cmd->data_len, 0,
 		       MIN_PACKET_LEN-cmd->data_len);
@@ -2754,10 +2740,11 @@ wctc4xxp_start_dma(struct wcdte *wc)
 }
 
 static void
-_wctc4xxp_stop_dma(struct wcdte *wc)
+wctc4xxp_stop_dma(struct wcdte *wc)
 {
 	/* Disable interrupts and reset */
 	unsigned int reg;
+	unsigned long newjiffies;
 	/* Disable interrupts */
 	wctc4xxp_setintmask(wc, 0x00000000);
 	wctc4xxp_setctl(wc, 0x0084, 0x00000000);
@@ -2766,14 +2753,7 @@ _wctc4xxp_stop_dma(struct wcdte *wc)
 	reg = wctc4xxp_getctl(wc, 0x0000);
 	reg |= 0x00000001;
 	wctc4xxp_setctl(wc, 0x0000, reg);
-}
 
-static void
-wctc4xxp_stop_dma(struct wcdte *wc)
-{
-	unsigned long newjiffies;
-
-	_wctc4xxp_stop_dma(wc);
 	newjiffies = jiffies + HZ; /* One second timeout */
 	/* We'll wait here for the part to come out of reset */
 	while (((wctc4xxp_getctl(wc, 0x0000)) & 0x00000001) &&
@@ -2781,6 +2761,7 @@ wctc4xxp_stop_dma(struct wcdte *wc)
 			msleep(1);
 }
 
+
 #define MDIO_SHIFT_CLK		0x10000
 #define MDIO_DATA_WRITE1 	0x20000
 #define MDIO_ENB		0x00000
@@ -3324,19 +3305,13 @@ wctc4xxp_watchdog(unsigned long data)
 		if (time_after(jiffies, cmd->timeout)) {
 			if (++cmd->retries > MAX_RETRIES) {
 				if (!(cmd->flags & TX_COMPLETE)) {
-
-					cmd->flags |= DTE_CMD_TIMEOUT;
-					list_del_init(&cmd->node);
-					complete(&cmd->complete);
-
 					set_bit(DTE_SHUTDOWN, &wc->flags);
 					spin_unlock(&wc->cmd_list_lock);
-					_wctc4xxp_stop_dma(wc);
+					wctc4xxp_stop_dma(wc);
 					dev_err(&wc->pdev->dev,
 					  "Board malfunctioning.  " \
 					  "Halting operation.\n");
-					reschedule_timer = 0;
-					break;
+					return;
 				}
 				/* ERROR:  We've retried the command and
 				 * haven't received the ACK or the response.