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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-11-29 11:06:57 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-11-29 11:06:57 -0800 |
commit | 8b7a51ba2637ee53ce90624f5f98aaf8ec9b2bcc (patch) | |
tree | 879c13bb2342da47adbf51810dc72c9d430852b9 /drivers | |
parent | 1214917e008bb8989747b8bf9a721f7a6db8f8d7 (diff) | |
parent | 7032908cd5842af9710de4815a456241b5e6d2d1 (diff) | |
download | linux-stable-8b7a51ba2637ee53ce90624f5f98aaf8ec9b2bcc.tar.gz linux-stable-8b7a51ba2637ee53ce90624f5f98aaf8ec9b2bcc.tar.bz2 linux-stable-8b7a51ba2637ee53ce90624f5f98aaf8ec9b2bcc.zip |
Merge tag 'irq-urgent-2020-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Two fixes for irqchip drivers:
- Save and restore the GICV3 ITS state unconditionally on
suspend/resume to handle firmware which fails to do so.
- Use the correct index into the fwspec parameters to read the irq
trigger type in the EXIU chip driver"
* tag 'irq-urgent-2020-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Unconditionally save/restore the ITS state on suspend
irqchip/exiu: Fix the index of fwspec for IRQ type
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 16 | ||||
-rw-r--r-- | drivers/irqchip/irq-sni-exiu.c | 2 |
2 files changed, 4 insertions, 14 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 0fec31931e11..4069c215328b 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -42,7 +42,6 @@ #define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0) #define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1) #define ITS_FLAGS_WORKAROUND_CAVIUM_23144 (1ULL << 2) -#define ITS_FLAGS_SAVE_SUSPEND_STATE (1ULL << 3) #define RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING (1 << 0) #define RDIST_FLAGS_RD_TABLES_PREALLOCATED (1 << 1) @@ -4741,9 +4740,6 @@ static int its_save_disable(void) list_for_each_entry(its, &its_nodes, entry) { void __iomem *base; - if (!(its->flags & ITS_FLAGS_SAVE_SUSPEND_STATE)) - continue; - base = its->base; its->ctlr_save = readl_relaxed(base + GITS_CTLR); err = its_force_quiescent(base); @@ -4762,9 +4758,6 @@ err: list_for_each_entry_continue_reverse(its, &its_nodes, entry) { void __iomem *base; - if (!(its->flags & ITS_FLAGS_SAVE_SUSPEND_STATE)) - continue; - base = its->base; writel_relaxed(its->ctlr_save, base + GITS_CTLR); } @@ -4784,9 +4777,6 @@ static void its_restore_enable(void) void __iomem *base; int i; - if (!(its->flags & ITS_FLAGS_SAVE_SUSPEND_STATE)) - continue; - base = its->base; /* @@ -4794,7 +4784,10 @@ static void its_restore_enable(void) * don't restore it since writing to CBASER or BASER<n> * registers is undefined according to the GIC v3 ITS * Specification. + * + * Firmware resuming with the ITS enabled is terminally broken. */ + WARN_ON(readl_relaxed(base + GITS_CTLR) & GITS_CTLR_ENABLE); ret = its_force_quiescent(base); if (ret) { pr_err("ITS@%pa: failed to quiesce on resume: %d\n", @@ -5074,9 +5067,6 @@ static int __init its_probe_one(struct resource *res, ctlr |= GITS_CTLR_ImDe; writel_relaxed(ctlr, its->base + GITS_CTLR); - if (GITS_TYPER_HCC(typer)) - its->flags |= ITS_FLAGS_SAVE_SUSPEND_STATE; - err = its_init_domain(handle, its); if (err) goto out_free_tables; diff --git a/drivers/irqchip/irq-sni-exiu.c b/drivers/irqchip/irq-sni-exiu.c index 1d027623c776..abd011fcecf4 100644 --- a/drivers/irqchip/irq-sni-exiu.c +++ b/drivers/irqchip/irq-sni-exiu.c @@ -136,7 +136,7 @@ static int exiu_domain_translate(struct irq_domain *domain, if (fwspec->param_count != 2) return -EINVAL; *hwirq = fwspec->param[0]; - *type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK; + *type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK; } return 0; } |