4 files changed, 49 insertions, 21 deletions

diff --git a/drivers/serial/jsm/jsm.h b/drivers/serial/jsm/jsm.h
index 4e5f3bde046..38a509c684c 100644
--- a/drivers/serial/jsm/jsm.h
+++ b/drivers/serial/jsm/jsm.h
@@ -138,7 +138,6 @@ struct jsm_board
 	u32		nasync;		/* Number of ports on card */
 
 	u32		irq;		/* Interrupt request number */
-	u64		intr_count;	/* Count of interrupts */
 
 	u64		membase;	/* Start of base memory of the card */
 	u64		membase_end;	/* End of base memory of the card */
@@ -206,8 +205,6 @@ struct jsm_channel {
 
 	u64		ch_close_delay;	/* How long we should drop RTS/DTR for */
 
-	u64		ch_cpstime;	/* Time for CPS calculations	*/
-
 	tcflag_t	ch_c_iflag;	/* channel iflags		*/
 	tcflag_t	ch_c_cflag;	/* channel cflags		*/
 	tcflag_t	ch_c_oflag;	/* channel oflags		*/
@@ -215,11 +212,6 @@ struct jsm_channel {
 	u8		ch_stopc;	/* Stop character		*/
 	u8		ch_startc;	/* Start character		*/
 
-	u32		ch_old_baud;	/* Cache of the current baud */
-	u32		ch_custom_speed;/* Custom baud, if set */
-
-	u32		ch_wopen;	/* Waiting for open process cnt */
-
 	u8		ch_mostat;	/* FEP output modem status	*/
 	u8		ch_mistat;	/* FEP input modem status	*/
 
diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c
index b3604aa322a..108c3e0471f 100644
--- a/drivers/serial/jsm/jsm_driver.c
+++ b/drivers/serial/jsm/jsm_driver.c
@@ -48,6 +48,17 @@ struct uart_driver jsm_uart_driver = {
 	.nr		= NR_PORTS,
 };
 
+static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
+                                       pci_channel_state_t state);
+static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
+static void jsm_io_resume(struct pci_dev *pdev);
+
+static struct pci_error_handlers jsm_err_handler = {
+	.error_detected = jsm_io_error_detected,
+	.slot_reset = jsm_io_slot_reset,
+	.resume = jsm_io_resume,
+};
+
 int jsm_debug;
 module_param(jsm_debug, int, 0);
 MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
@@ -123,7 +134,7 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device
 	}
 
 	rc = request_irq(brd->irq, brd->bd_ops->intr,
-			IRQF_DISABLED|IRQF_SHARED, "JSM", brd);
+			IRQF_SHARED, "JSM", brd);
 	if (rc) {
 		printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
 		goto out_iounmap;
@@ -164,6 +175,7 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device
 	}
 
 	pci_set_drvdata(pdev, brd);
+	pci_save_state(pdev);
 
 	return 0;
  out_free_irq:
@@ -222,8 +234,42 @@ static struct pci_driver jsm_driver = {
 	.id_table	= jsm_pci_tbl,
 	.probe		= jsm_probe_one,
 	.remove		= __devexit_p(jsm_remove_one),
+	.err_handler    = &jsm_err_handler,
 };
 
+static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
+					pci_channel_state_t state)
+{
+	struct jsm_board *brd = pci_get_drvdata(pdev);
+
+	jsm_remove_uart_port(brd);
+
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
+{
+	int rc;
+
+	rc = pci_enable_device(pdev);
+
+	if (rc)
+		return PCI_ERS_RESULT_DISCONNECT;
+
+	pci_set_master(pdev);
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+static void jsm_io_resume(struct pci_dev *pdev)
+{
+	struct jsm_board *brd = pci_get_drvdata(pdev);
+
+	pci_restore_state(pdev);
+
+	jsm_uart_port_init(brd);
+}
+
 static int __init jsm_init_module(void)
 {
 	int rc;
diff --git a/drivers/serial/jsm/jsm_neo.c b/drivers/serial/jsm/jsm_neo.c
index b4b124e4828..7960d9633c1 100644
--- a/drivers/serial/jsm/jsm_neo.c
+++ b/drivers/serial/jsm/jsm_neo.c
@@ -954,13 +954,8 @@ static void neo_param(struct jsm_channel *ch)
 		ch->ch_flags |= (CH_BAUD0);
 		ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
 		neo_assert_modem_signals(ch);
-		ch->ch_old_baud = 0;
 		return;
 
-	} else if (ch->ch_custom_speed) {
-			baud = ch->ch_custom_speed;
-			if (ch->ch_flags & CH_BAUD0)
-				ch->ch_flags &= ~(CH_BAUD0);
 	} else {
 		int i;
 		unsigned int cflag;
@@ -1045,7 +1040,6 @@ static void neo_param(struct jsm_channel *ch)
 	quot = ch->ch_bd->bd_dividend / baud;
 
 	if (quot != 0) {
-		ch->ch_old_baud = baud;
 		writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
 		writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
 		writeb((quot >> 8), &ch->ch_neo_uart->ier);
@@ -1123,8 +1117,6 @@ static irqreturn_t neo_intr(int irq, void *voidbrd)
 	unsigned long lock_flags2;
 	int outofloop_count = 0;
 
-	brd->intr_count++;
-
 	/* Lock out the slow poller from running on this board. */
 	spin_lock_irqsave(&brd->bd_intr_lock, lock_flags);
 
diff --git a/drivers/serial/jsm/jsm_tty.c b/drivers/serial/jsm/jsm_tty.c
index 7439c037362..cd95e215550 100644
--- a/drivers/serial/jsm/jsm_tty.c
+++ b/drivers/serial/jsm/jsm_tty.c
@@ -296,8 +296,6 @@ static void jsm_tty_close(struct uart_port *port)
 		bd->bd_ops->assert_modem_signals(channel);
 	}
 
-	channel->ch_old_baud = 0;
-
 	/* Turn off UART interrupts for this port */
 	channel->ch_bd->bd_ops->uart_off(channel);
 
@@ -432,7 +430,7 @@ int __devinit jsm_tty_init(struct jsm_board *brd)
 	return 0;
 }
 
-int __devinit jsm_uart_port_init(struct jsm_board *brd)
+int jsm_uart_port_init(struct jsm_board *brd)
 {
 	int i;
 	unsigned int line;
@@ -472,7 +470,7 @@ int __devinit jsm_uart_port_init(struct jsm_board *brd)
 		if (uart_add_one_port (&jsm_uart_driver, &brd->channels[i]->uart_port))
 			printk(KERN_INFO "jsm: add device failed\n");
 		else
-			printk(KERN_INFO "Added device \n");
+			printk(KERN_INFO "jsm: Port %d added\n", i);
 	}
 
 	jsm_printk(INIT, INFO, &brd->pci_dev, "finish\n");