[PATCH] ppc32 CPM_UART: Fixed break send on SCC

[Vitaly Bordug]

SCC uart sends a break sequence each time it is stopped with the 
CPM_CR_STOP_TX command. That means that each time an application closes the 
serial device, a break is transmitted. To fix this, graceful tx stop is
issued for SCC.

Signed-off-by: David Jander <david.jander at protonic.nl>
Signed-off-by: Vitaly Bordug <vbordug at ru.mvista.com>
---

 drivers/serial/cpm_uart/cpm_uart_core.c |    6 +++++-
 include/asm-ppc/commproc.h              |    1 +
 include/asm-ppc/cpm2.h                  |    2 +-
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c
index 2bdbcb3..969f949 100644
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/serial/cpm_uart/cpm_uart_core.c
@@ -473,7 +473,11 @@ static void cpm_uart_shutdown(struct uar
 		}
 
 		/* Shut them really down and reinit buffer descriptors */
-		cpm_line_cr_cmd(line, CPM_CR_STOP_TX);
+		if (IS_SMC(pinfo))
+			cpm_line_cr_cmd(line, CPM_CR_STOP_TX);
+		else
+			cpm_line_cr_cmd(line, CPM_CR_GRA_STOP_TX);
+
 		cpm_uart_initbd(pinfo);
 	}
 }
diff --git a/include/asm-ppc/commproc.h b/include/asm-ppc/commproc.h
index 973e609..31f3629 100644
--- a/include/asm-ppc/commproc.h
+++ b/include/asm-ppc/commproc.h
@@ -35,6 +35,7 @@
 #define CPM_CR_INIT_TX		((ushort)0x0002)
 #define CPM_CR_HUNT_MODE	((ushort)0x0003)
 #define CPM_CR_STOP_TX		((ushort)0x0004)
+#define CPM_CR_GRA_STOP_TX	((ushort)0x0005)
 #define CPM_CR_RESTART_TX	((ushort)0x0006)
 #define CPM_CR_CLOSE_RX_BD	((ushort)0x0007)
 #define CPM_CR_SET_GADDR	((ushort)0x0008)
diff --git a/include/asm-ppc/cpm2.h b/include/asm-ppc/cpm2.h
index b638b87..c70344b 100644
--- a/include/asm-ppc/cpm2.h
+++ b/include/asm-ppc/cpm2.h
@@ -69,7 +69,7 @@
 #define CPM_CR_INIT_TX		((ushort)0x0002)
 #define CPM_CR_HUNT_MODE	((ushort)0x0003)
 #define CPM_CR_STOP_TX		((ushort)0x0004)
-#define CPM_CR_GRA_STOP_TX      ((ushort)0x0005)
+#define CPM_CR_GRA_STOP_TX	((ushort)0x0005)
 #define CPM_CR_RESTART_TX	((ushort)0x0006)
 #define CPM_CR_SET_GADDR	((ushort)0x0008)
 #define CPM_CR_START_IDMA	((ushort)0x0009)