Merge tag 'char-misc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver merge from Greg Kroah-Hartman:
 "Here is the "big" char/misc driver tree update for the 3.7-rc1 merge
  window.

  Nothing major, just a number of driver updates and fixes, all of which
  have been in the linux-next releases for a while now either in my
  tree, or in Andrew's (the lis3l driver changes came from his tree last
  week).

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'char-misc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (52 commits)
  drivers/misc/lis3lv02d/lis3lv02d_i2c.c: add lis3lv02d device tree init
  drivers/misc/lis3lv02d/lis3lv02d_spi.c: add lis3lv02d device tree init
  drivers/misc/lis3lv02d: remove lis3lv02d driver DT init
  drivers/misc/lis3lv02d/lis3lv02d_spi.c: add DT matching table passthru code
  drivers/misc/lis3lv02d: add generic DT matching code
  lis3lv02d: fix some comments specific to lis331dlh driver
  MISC: hpilo, remove pci_disable_device
  pcmcia: synclink_cs: fix potential tty NULL dereference
  drivers/char/mmtimer.c: Remove useless kfree
  drivers/char: removes unnecessary semicolon
  char/misc: remove CONFIG_EXPERIMENTAL dependencies
  mei: don't print buffer as a string
  mei: struct mei_message_data doesn't have to be packed
  mei: add error messages for open count errors
  misc: use module_spi_driver
  tifm: use module_pci_driver
  misc/at25, dt: Improve at25 SPI eeprom device tree bindings.
  mei: add lynx point pci device ids
  mei: fix max number of open handles
  mei: rename struct pci_dev *mei_device to mei_pdev
  ...

1 files changed, 13 insertions, 7 deletions

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 0a484b4a1b02..a6b8ddea2227 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -891,6 +891,14 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty)
 	int work = 0;
  	struct mgsl_icount *icount = &info->icount;
 
+	if (!tty) {
+		/* tty is not available anymore */
+		issue_command(info, CHA, CMD_RXRESET);
+		if (debug_level >= DEBUG_LEVEL_ISR)
+			printk("%s(%d):rx_ready_async(tty=NULL)\n",__FILE__,__LINE__);
+		return;
+	}
+
 	if (tcd) {
 		/* early termination, get FIFO count from RBCL register */
 		fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
@@ -980,7 +988,7 @@ static void tx_done(MGSLPC_INFO *info, struct tty_struct *tty)
 	else
 #endif
 	{
-		if (tty->stopped || tty->hw_stopped) {
+		if (tty && (tty->stopped || tty->hw_stopped)) {
 			tx_stop(info);
 			return;
 		}
@@ -1000,7 +1008,7 @@ static void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty)
 		if (!info->tx_active)
 			return;
 	} else {
-		if (tty->stopped || tty->hw_stopped) {
+		if (tty && (tty->stopped || tty->hw_stopped)) {
 			tx_stop(info);
 			return;
 		}
@@ -1050,13 +1058,12 @@ static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty)
 	wake_up_interruptible(&info->status_event_wait_q);
 	wake_up_interruptible(&info->event_wait_q);
 
-	if (info->port.flags & ASYNC_CTS_FLOW) {
+	if (tty && (info->port.flags & ASYNC_CTS_FLOW)) {
 		if (tty->hw_stopped) {
 			if (info->serial_signals & SerialSignal_CTS) {
 				if (debug_level >= DEBUG_LEVEL_ISR)
 					printk("CTS tx start...");
-				if (tty)
-					tty->hw_stopped = 0;
+				tty->hw_stopped = 0;
 				tx_start(info, tty);
 				info->pending_bh |= BH_TRANSMIT;
 				return;
@@ -1065,8 +1072,7 @@ static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty)
 			if (!(info->serial_signals & SerialSignal_CTS)) {
 				if (debug_level >= DEBUG_LEVEL_ISR)
 					printk("CTS tx stop...");
-				if (tty)
-					tty->hw_stopped = 1;
+				tty->hw_stopped = 1;
 				tx_stop(info);
 			}
 		}