[GIT PULL] AVR32 fixes

Haavard Skinnemoen
2007-06-14T17:00:24Z

Hi Linus,

Please pull the 'for-linus' branch of

git://www.atmel.no/~hskinnemoen/linux/kernel/avr32.git for-linus

to receive the following updates.

Note that this will crash on boot if CONFIG_SLUB_DEBUG=y and slub_debug
is not set, but the alternative is more subtle DMA breakage and
Christoph Lameter has sent a patch to Andrew (Subject: "SLUB: minimum
alignment fixes") which takes care of it.

Andrea Righi (1):
[AVR32] ratelimit segfault reporting rate

David Brownell (1):
[AVR32] gpio_*_cansleep() fix

Haavard Skinnemoen (2):
[AVR32] STK1000: Set SPI_MODE_3 in the ltv350qv board info
[AVR32] Define ARCH_KMALLOC_MINALIGN to L1_CACHE_BYTES

arch/avr32/boards/atstk1000/atstk1002.c | 1 +
arch/avr32/mm/fault.c | 2 +-
include/asm-avr32/arch-at32ap/gpio.h | 2 ++
include/asm-avr32/cache.h | 9 +++++++++
4 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index fe1dbe2..e253e86 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -42,6 +42,7 @@ static struct spi_board_info spi0_board_info[] __initdata = {
.modalias = "ltv350qv",
.max_speed_hz = 16000000,
.chip_select = 1,
+ .mode = SPI_MODE_3,
},
};

diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
index e011f1c..4b24952 100644
--- a/arch/avr32/mm/fault.c
+++ b/arch/avr32/mm/fault.c
@@ -158,7 +158,7 @@ bad_area:
up_read(&mm->mmap_sem);

if (user_mode(regs)) {
- if (exception_trace)
+ if (exception_trace && printk_ratelimit())
printk("%s%s[%d]: segfault at %08lx pc %08lx "
"sp %08lx ecr %lu\n",
is_init(tsk) ? KERN_EMERG : KERN_INFO,
diff --git a/include/asm-avr32/arch-at32ap/gpio.h b/include/asm-avr32/arch-at32ap/gpio.h
index 80a21aa..af7f953 100644
--- a/include/asm-avr32/arch-at32ap/gpio.h
+++ b/include/asm-avr32/arch-at32ap/gpio.h
@@ -14,6 +14,8 @@ int gpio_direction_output(unsigned int gpio, int value);
int gpio_get_value(unsigned int gpio);
void gpio_set_value(unsigned int gpio, int value);

+#include <asm-generic/gpio.h> /* cansleep wrappers */
+
static inline int gpio_to_irq(unsigned int gpio)
{
return gpio + GPIO_IRQ_BASE;
diff --git a/include/asm-avr32/cache.h b/include/asm-avr32/cache.h
index dabb955..d3cf35a 100644
--- a/include/asm-avr32/cache.h
+++ b/include/asm-avr32/cache.h
@@ -4,6 +4,15 @@
#define L1_CACHE_SHIFT 5
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)

+/*
+ * Memory returned by kmalloc() may be used for DMA, so we must make
+ * sure that all such allocations are cache aligned. Otherwise,
+ * unrelated code may cause parts of the buffer to be read into the
+ * cache before the transfer is done, causing old data to be seen by
+ * the CPU.
+ */
+#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
+
#ifndef __ASSEMBLER__
struct cache_info {
unsigned int ways;