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authorAzhar Shaikh <azhar.shaikh@intel.com>2016-10-12 10:12:20 -0700
committerLee Jones <lee.jones@linaro.org>2016-11-16 09:50:25 +0000
commit274e43edcda6f709aa67e436b3123e45a6270923 (patch)
tree4c6a3e9c64fe5b6f7d03eebf522846e772866274 /drivers
parent2c8c34167c987e463d62a55384fcec7fa8d03a54 (diff)
mfd: intel-lpss: Do not put device in reset state on suspend
Commit 41a3da2b8e163 ("mfd: intel-lpss: Save register context on suspend") saved the register context while going to suspend and also put the device in reset state. Due to the resetting of device, system cannot enter S3/S0ix states when no_console_suspend flag is enabled. The system and serial console both hang. The resetting of device is not needed while going to suspend. Hence remove this code. Cc: stable@vger.kernel.org Fixes: 41a3da2b8e163 ("mfd: intel-lpss: Save register context on suspend") Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mfd/intel-lpss.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
index 41b113875d64..70c646b0097d 100644
--- a/drivers/mfd/intel-lpss.c
+++ b/drivers/mfd/intel-lpss.c
@@ -502,9 +502,6 @@ int intel_lpss_suspend(struct device *dev)
for (i = 0; i < LPSS_PRIV_REG_COUNT; i++)
lpss->priv_ctx[i] = readl(lpss->priv + i * 4);
- /* Put the device into reset state */
- writel(0, lpss->priv + LPSS_PRIV_RESETS);
-
return 0;
}
EXPORT_SYMBOL_GPL(intel_lpss_suspend);