Messages in this thread Patch in this message | | | From | Azhar Shaikh <> | Subject | [PATCH] mfd: intel-lpss: Do not put device in reset state on suspend | Date | Wed, 12 Oct 2016 10:12:20 -0700 |
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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.
Fixes: 41a3da2b8e163 ("mfd: intel-lpss: Save register context on suspend") Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com> --- drivers/mfd/intel-lpss.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 41b1138..70c646b 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); -- 2.10.1
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