[ARM] 4184/1: iop: cp6 access handler (undef_hook)

Enable svc access to cp6 via an undefined instruction hook.  Do not enable
access for usr code.

This patch also makes iop13xx select PLAT_IOP, this requires a small change
to drivers/i2c/busses/i2c-iop3xx.c.

Per Lennert Buytenhek's note, the cp6 trap routine is moved to arch/arm/plat-iop
Per Nicolas Pitre's note, the cp_wait is skipped since the latency to
return to the faulting function is longer than cp_wait.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index d108ab4974cc..b70a7f7daacc 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -84,7 +84,7 @@ iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
          * Every time unit enable is asserted, GPOD needs to be cleared
          * on IOP3XX to avoid data corruption on the bus.
          */
-#ifdef CONFIG_PLAT_IOP
+#if defined(CONFIG_ARCH_IOP32X) || defined(CONFIG_ARCH_IOP33X)
         if (iop3xx_adap->id == 0) {
                 gpio_line_set(IOP3XX_GPIO_LINE(7), GPIO_LOW);
                 gpio_line_set(IOP3XX_GPIO_LINE(6), GPIO_LOW);