From 8a18f4284ec94ec56189e7f14495359d3b892a52 Mon Sep 17 00:00:00 2001 From: Chen Yu Date: Wed, 21 Dec 2016 17:24:55 +0800 Subject: [PATCH] platform: Print the resource range if device failed to claim Sometimes we have the following error message: platform MSFT0101:00: failed to claim resource 1 acpi MSFT0101:00: platform device creation failed: -16 But there is not enough information to figure out which resource range failed to claim. Thus print the resource range at first-place thus /proc/iomem or ioports should tell us who already claimed this resource, then the driver bug or incorrect resource assignment which is running into this conflict can be diagnosed: platform MSFT0101:00: failed to claim resource 1: [mem 0xfed40000-0xfed40fff] acpi MSFT0101:00: platform device creation failed: -16 Suggested-by: Len Brown Reported-by: Wendy Wang Signed-off-by: Chen Yu Reviewed-by: Mika Westerberg Signed-off-by: Greg Kroah-Hartman --- drivers/base/platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/platform.c b/drivers/base/platform.c index c4af00385502..22a6430aadc3 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -396,7 +396,7 @@ int platform_device_add(struct platform_device *pdev) } if (p && insert_resource(p, r)) { - dev_err(&pdev->dev, "failed to claim resource %d\n", i); + dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r); ret = -EBUSY; goto failed; }