redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

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 <lenb@kernel.org>
Reported-by: Wendy Wang <wendy.wang@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Chen Yu 2016-12-21 17:24:55 +08:00 committed by Greg Kroah-Hartman
parent a0244a8df1
commit 8a18f4284e
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/base/platform.c
View File

@ -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;
}