[PATCHv4 6/7] hwspinlock/omap: enable module before reading SYSSTATUS register

Hi again,

On Tue, Jan 14, 2014 at 07:10:52AM -0600, Felipe Balbi wrote:

quoted

diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c
index 9f56fb2..194886e 100644
--- a/drivers/hwspinlock/omap_hwspinlock.c
+++ b/drivers/hwspinlock/omap_hwspinlock.c

@@ -101,10 +101,23 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 	if (!io_base)
 		return -ENOMEM;
 
+	/*
+	 * make sure the module is enabled and clocked before reading
+	 * the module SYSSTATUS register
+	 */
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);

another thing, you need to check return of pm_runtime_get_sync()

-- 
balbi
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