| Message ID | 1495020609-13397-2-git-send-email-sricharan@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index e6e9bec..2ec2f0b 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -237,6 +237,12 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, ops = ERR_PTR(err); } + /* Ignore all other errors apart from EPROBE_DEFER */ + if (IS_ERR(ops) && (PTR_ERR(ops) != -EPROBE_DEFER)) { + dev_info(dev, "Adding to iommu failed: %ld\n", PTR_ERR(ops)); + ops = NULL; + } + return ops; }
While deferring the probe of iommu masters, xlate and add_device callback can pass back error values like -ENODEV, which means iommu cannot be connected with that master for real reasons. So rather than killing the master's probe for such errors, just ignore the errors and let the master work without an iommu. Fixes: 7b07cbefb68d ("iommu: of: Handle IOMMU lookup failure with deferred probing or error") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Magnus Damn <magnus.damn@gmail.com> Signed-off-by: Sricharan R <sricharan@codeaurora.org> --- drivers/iommu/of_iommu.c | 6 ++++++ 1 file changed, 6 insertions(+)