linux-ezx: add 2.6.24

1 files changed, 45 insertions, 0 deletions

diff --git a/packages/linux/linux-ezx-2.6.24/patches/ezx-serial-bug-workaround.patch b/packages/linux/linux-ezx-2.6.24/patches/ezx-serial-bug-workaround.patch
new file mode 100644
index 0000000000..efff7e06a5
--- /dev/null
+++ b/packages/linux/linux-ezx-2.6.24/patches/ezx-serial-bug-workaround.patch
@@ -0,0 +1,45 @@
+Work around some errata in the pxa serial code (copied from motorolas 2.4.x tree)
+
+Index: linux-2.6.24/drivers/serial/pxa.c
+===================================================================
+--- linux-2.6.24.orig/drivers/serial/pxa.c
++++ linux-2.6.24/drivers/serial/pxa.c
+@@ -29,6 +29,10 @@
+ #define SUPPORT_SYSRQ
+ #endif
+ 
++#define pxa_buggy_port(x) ({ \
++	int cpu_ver; asm("mrc%? p15, 0, %0, c0, c0" : "=r" (cpu_ver)); \
++	((x) == PORT_PXA && (cpu_ver & ~1) == 0x69052100); })
++
+ #include <linux/module.h>
+ #include <linux/ioport.h>
+ #include <linux/init.h>
+@@ -196,7 +200,7 @@
+ 	if (uart_circ_empty(xmit))
+ 		serial_pxa_stop_tx(&up->port);
+ }
+-
++static inline irqreturn_t serial_pxa_irq(int, void *);
+ static void serial_pxa_start_tx(struct uart_port *port)
+ {
+ 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;
+@@ -204,6 +208,8 @@
+ 	if (!(up->ier & UART_IER_THRI)) {
+ 		up->ier |= UART_IER_THRI;
+ 		serial_out(up, UART_IER, up->ier);
++		if (pxa_buggy_port(up->port.type))
++			serial_pxa_irq(up->port.irq, NULL);
+ 	}
+ }
+ 
+@@ -299,6 +305,9 @@
+ 
+ 	mcr |= up->mcr;
+ 
++	if (pxa_buggy_port(up->port.type) && up->port.irq != 0)
++		mcr ^= UART_MCR_OUT2;
++
+ 	serial_out(up, UART_MCR, mcr);
+ }
+