From aeadc74d0e9c4e2a7495407822e873c157f491cb Mon Sep 17 00:00:00 2001
From: John Crispin <john@openwrt.org>
Date: Thu, 18 Mar 2010 13:55:14 +0000
Subject: [PATCH] Bugfix: do not call request_irq() with interrupts disabled,
signed off by Ithamar R. Adema
SVN-Revision: 20273
---
.../ifxmips/patches-2.6.30/120-serial.patch | 24 +++++++------------
1 file changed, 9 insertions(+), 15 deletions(-)
diff --git a/target/linux/ifxmips/patches-2.6.30/120-serial.patch b/target/linux/ifxmips/patches-2.6.30/120-serial.patch
index 8aa9dbbe45..1169378e42 100644
--- a/target/linux/ifxmips/patches-2.6.30/120-serial.patch
+++ b/target/linux/ifxmips/patches-2.6.30/120-serial.patch
@@ -1,7 +1,7 @@
-Index: linux-2.6.30.8/drivers/serial/Kconfig
+Index: linux-2.6.30.10/drivers/serial/Kconfig
===================================================================
---- linux-2.6.30.8.orig/drivers/serial/Kconfig 2009-09-24 17:28:02.000000000 +0200
-+++ linux-2.6.30.8/drivers/serial/Kconfig 2009-10-19 21:31:32.000000000 +0200
+--- linux-2.6.30.10.orig/drivers/serial/Kconfig 2009-12-04 07:00:07.000000000 +0100
++++ linux-2.6.30.10/drivers/serial/Kconfig 2010-03-18 12:24:20.000000000 +0100
@@ -1365,6 +1365,14 @@
help
Support for Console on the NWP serial ports.
@@ -17,20 +17,20 @@ Index: linux-2.6.30.8/drivers/serial/Kconfig
config SERIAL_QE
tristate "Freescale QUICC Engine serial port support"
depends on QUICC_ENGINE
-Index: linux-2.6.30.8/drivers/serial/Makefile
+Index: linux-2.6.30.10/drivers/serial/Makefile
===================================================================
---- linux-2.6.30.8.orig/drivers/serial/Makefile 2009-09-24 17:28:02.000000000 +0200
-+++ linux-2.6.30.8/drivers/serial/Makefile 2009-10-19 21:31:32.000000000 +0200
+--- linux-2.6.30.10.orig/drivers/serial/Makefile 2009-12-04 07:00:07.000000000 +0100
++++ linux-2.6.30.10/drivers/serial/Makefile 2010-03-18 12:24:20.000000000 +0100
@@ -77,3 +77,4 @@
obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
+obj-$(CONFIG_SERIAL_IFXMIPS) += ifxmips_asc.o
-Index: linux-2.6.30.8/drivers/serial/ifxmips_asc.c
+Index: linux-2.6.30.10/drivers/serial/ifxmips_asc.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.30.8/drivers/serial/ifxmips_asc.c 2009-10-19 21:41:27.000000000 +0200
-@@ -0,0 +1,561 @@
++++ linux-2.6.30.10/drivers/serial/ifxmips_asc.c 2010-03-18 14:04:58.000000000 +0100
+@@ -0,0 +1,555 @@
+/*
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
@@ -258,7 +258,6 @@ Index: linux-2.6.30.8/drivers/serial/ifxmips_asc.c
+
+static int ifxmipsasc_startup(struct uart_port *port)
+{
-+ unsigned long flags;
+ int retval;
+
+ port->uartclk = ifxmips_get_fpi_hz();
@@ -271,8 +270,6 @@ Index: linux-2.6.30.8/drivers/serial/ifxmips_asc.c
+ wmb();
+ ifxmips_w32(ifxmips_r32(port->membase + IFXMIPS_ASC_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN, port->membase + IFXMIPS_ASC_CON);
+
-+ local_irq_save(flags);
-+
+ retval = request_irq(port->irq, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
+ if (retval) {
+ printk(KERN_ERR "failed to request ifxmipsasc_tx_int\n");
@@ -292,15 +289,12 @@ Index: linux-2.6.30.8/drivers/serial/ifxmips_asc.c
+ }
+
+ ifxmips_w32(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX, port->membase + IFXMIPS_ASC_IRNREN);
-+
-+ local_irq_restore(flags);
+ return 0;
+
+err2:
+ free_irq(port->irq + 2, port);
+err1:
+ free_irq(port->irq, port);
-+ local_irq_restore(flags);
+ return retval;
+}
+
--
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