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| Started by | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| First post | 2017-05-14 20:50 +0200 |
| Last post | 2017-05-15 16:50 +0200 |
| Articles | 3 — 3 participants |
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[patch 11/18] iommu/of: Adjust system_state check Thomas Gleixner <tglx@linutronix.de> - 2017-05-14 20:50 +0200
Re: [patch 11/18] iommu/of: Adjust system_state check Robin Murphy <robin.murphy@arm.com> - 2017-05-15 12:50 +0200
Re: [patch 11/18] iommu/of: Adjust system_state check Joerg Roedel <joro@8bytes.org> - 2017-05-15 16:50 +0200
| From | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| Date | 2017-05-14 20:50 +0200 |
| Subject | [patch 11/18] iommu/of: Adjust system_state check |
| Message-ID | <tH6KB-5j9-1@gated-at.bofh.it> |
To enable smp_processor_id() and might_sleep() debug checks earlier, it's required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING. Adjust the system_state check in of_iommu_driver_present() to handle the extra states. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: iommu@lists.linux-foundation.org --- drivers/iommu/of_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -103,7 +103,7 @@ static bool of_iommu_driver_present(stru * it never will be. We don't want to defer indefinitely, nor attempt * to dereference __iommu_of_table after it's been freed. */ - if (system_state > SYSTEM_BOOTING) + if (system_state >= SYSTEM_RUNNING) return false; return of_match_node(&__iommu_of_table, np);
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| From | Robin Murphy <robin.murphy@arm.com> |
|---|---|
| Date | 2017-05-15 12:50 +0200 |
| Message-ID | <tHlJE-6Zt-11@gated-at.bofh.it> |
| In reply to | #1641183 |
On 14/05/17 19:27, Thomas Gleixner wrote: > To enable smp_processor_id() and might_sleep() debug checks earlier, it's > required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING. > > Adjust the system_state check in of_iommu_driver_present() to handle the > extra states. FWIW, Acked-by: Robin Murphy <robin.murphy@arm.com> > Signed-off-by: Thomas Gleixner <tglx@linutronix.de> > Cc: Joerg Roedel <joro@8bytes.org> > Cc: iommu@lists.linux-foundation.org > --- > drivers/iommu/of_iommu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- a/drivers/iommu/of_iommu.c > +++ b/drivers/iommu/of_iommu.c > @@ -103,7 +103,7 @@ static bool of_iommu_driver_present(stru > * it never will be. We don't want to defer indefinitely, nor attempt > * to dereference __iommu_of_table after it's been freed. > */ > - if (system_state > SYSTEM_BOOTING) > + if (system_state >= SYSTEM_RUNNING) > return false; > > return of_match_node(&__iommu_of_table, np); >
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| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Date | 2017-05-15 16:50 +0200 |
| Message-ID | <tHptU-XY-25@gated-at.bofh.it> |
| In reply to | #1641183 |
On Sun, May 14, 2017 at 08:27:27PM +0200, Thomas Gleixner wrote: > To enable smp_processor_id() and might_sleep() debug checks earlier, it's > required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING. > > Adjust the system_state check in of_iommu_driver_present() to handle the > extra states. > > Signed-off-by: Thomas Gleixner <tglx@linutronix.de> > Cc: Joerg Roedel <joro@8bytes.org> > Cc: iommu@lists.linux-foundation.org Acked-by: Joerg Roedel <jroedel@suse.de>
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