From: Victor Kamensky victor.kamensky@linaro.org
All OMAP IP blocks expect LE data, but CPU may operate in BE mode. Need to use endian neutral functions to read/write h/w registers. I.e instead of __raw_read[lw] and __raw_write[lw] functions code need to use read[lw]_relaxed and write[lw]_relaxed functions. If the first simply reads/writes register, the second will byteswap it if host operates in BE mode.
Changes are trivial sed like replacement of __raw_xxx functions with xxx_relaxed variant.
Signed-off-by: Victor Kamensky victor.kamensky@linaro.org Signed-off-by: Taras Kondratiuk taras.kondratiuk@linaro.org --- arch/arm/plat-omap/debug-leds.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/arm/plat-omap/debug-leds.c b/arch/arm/plat-omap/debug-leds.c index aa7ebc6..48b69de 100644 --- a/arch/arm/plat-omap/debug-leds.c +++ b/arch/arm/plat-omap/debug-leds.c @@ -85,12 +85,12 @@ static void dbg_led_set(struct led_classdev *cdev, struct dbg_led *led = container_of(cdev, struct dbg_led, cdev); u16 reg;
- reg = __raw_readw(&fpga->leds); + reg = readw_relaxed(&fpga->leds); if (b != LED_OFF) reg |= led->mask; else reg &= ~led->mask; - __raw_writew(reg, &fpga->leds); + writew_relaxed(reg, &fpga->leds); }
static enum led_brightness dbg_led_get(struct led_classdev *cdev) @@ -98,7 +98,7 @@ static enum led_brightness dbg_led_get(struct led_classdev *cdev) struct dbg_led *led = container_of(cdev, struct dbg_led, cdev); u16 reg;
- reg = __raw_readw(&fpga->leds); + reg = readw_relaxed(&fpga->leds); return (reg & led->mask) ? LED_FULL : LED_OFF; }
@@ -112,7 +112,7 @@ static int fpga_probe(struct platform_device *pdev) return -ENODEV;
fpga = ioremap(iomem->start, resource_size(iomem)); - __raw_writew(0xff, &fpga->leds); + writew_relaxed(0xff, &fpga->leds);
for (i = 0; i < ARRAY_SIZE(dbg_leds); i++) { struct dbg_led *led; @@ -138,15 +138,15 @@ static int fpga_probe(struct platform_device *pdev)
static int fpga_suspend_noirq(struct device *dev) { - fpga_led_state = __raw_readw(&fpga->leds); - __raw_writew(0xff, &fpga->leds); + fpga_led_state = readw_relaxed(&fpga->leds); + writew_relaxed(0xff, &fpga->leds);
return 0; }
static int fpga_resume_noirq(struct device *dev) { - __raw_writew(~fpga_led_state, &fpga->leds); + writew_relaxed(~fpga_led_state, &fpga->leds); return 0; }