mfd: intel-lpss: Program REMAP register in PIO mode

BugLink: http://bugs.launchpad.net/bugs/1807469
commit d28b62520830b2d0bffa2d98e81afc9f5e537e8b upstream.

According to documentation REMAP register has to be programmed in
either DMA or PIO mode of the slice.

Move the DMA capability check below to let REMAP register be programmed
in PIO mode.

Cc: stable@vger.kernel.org # 4.3+
Fixes: 4b45efe85263 ("mfd: Add support for Intel Sunrisepoint LPSS devices")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
index 0e0ab9bb15305d895e082e479ef3f86922c71d33..40e8d9b59d07761e56f47011ab48fee4a3ceb1c2 100644 (file)
--- a/drivers/mfd/intel-lpss.c
+++ b/drivers/mfd/intel-lpss.c
@@ -275,11 +275,11 @@ static void intel_lpss_init_dev(const struct intel_lpss *lpss)
 
        intel_lpss_deassert_reset(lpss);
 
+       intel_lpss_set_remap_addr(lpss);
+
        if (!intel_lpss_has_idma(lpss))
                return;
 
-       intel_lpss_set_remap_addr(lpss);
-
        /* Make sure that SPI multiblock DMA transfers are re-enabled */
        if (lpss->type == LPSS_DEV_SPI)
                writel(value, lpss->priv + LPSS_PRIV_SSP_REG);