lkml.org 
[lkml]   [2015]   [Nov]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mmc: sdhci-of-at91: controller is suspended too early
Date
When calling sdhci_add_host(), the controller is already suspended. It
causes to read 0 in registers.
Increment the device's usage counter before calling sdhci_add_host(),
decrement it after and put it in suspend if it is possible.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Fixes: "mmc: sdhci-of-at91: add PM support"
---
drivers/mmc/host/sdhci-of-at91.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 81ab9db..7e7d8f0 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -200,6 +200,7 @@ static int sdhci_at91_probe(struct platform_device *pdev)

sdhci_get_of_property(pdev);

+ pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
@@ -209,6 +210,8 @@ static int sdhci_at91_probe(struct platform_device *pdev)
if (ret)
goto pm_runtime_disable;

+ pm_runtime_put_autosuspend(&pdev->dev);
+
return 0;

pm_runtime_disable:
--
2.5.0


\
 
 \ /
  Last update: 2015-11-26 18:01    [W:0.084 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site