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Misc irqchip fixes:

Browse Source 
- Fix an endianness bug in the gic-v5 irqchip driver
  - Revert a broken commit from the riscv-imsic irqchip driver
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2026-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc irqchip fixes from Ingo Molnar:

 - Fix an endianness bug in the gic-v5 irqchip driver

 - Revert a broken commit from the riscv-imsic irqchip driver

* tag 'irq-urgent-2026-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "irqchip/riscv-imsic: Embed the vector array in lpriv"
  irqchip/gic-v5: Fix gicv5_its_map_event() ITTE read endianness
This commit is contained in:
Linus Torvalds 2026-01-11 06:36:20 -10:00
commit 88730166f3
3 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/irqchip/irq-gic-v5-its.c
View File

@ -849,7 +849,7 @@ static int gicv5_its_map_event(struct gicv5_its_dev *its_dev, u16 event_id, u32
itte = gicv5_its_device_get_itte_ref(its_dev, event_id);
if (FIELD_GET(GICV5_ITTL2E_VALID, *itte))
if (FIELD_GET(GICV5_ITTL2E_VALID, le64_to_cpu(*itte)))
return -EEXIST;
itt_entry = FIELD_PREP(GICV5_ITTL2E_LPI_ID, lpi) |

10
drivers/irqchip/irq-riscv-imsic-state.c
View File

@ -477,6 +477,7 @@ static void __init imsic_local_cleanup(void)
lpriv = per_cpu_ptr(imsic->lpriv, cpu);
bitmap_free(lpriv->dirty_bitmap);
kfree(lpriv->vectors);
}
free_percpu(imsic->lpriv);
@ -490,8 +491,7 @@ static int __init imsic_local_init(void)
int cpu, i;
/* Allocate per-CPU private state */
imsic->lpriv = __alloc_percpu(struct_size(imsic->lpriv, vectors, global->nr_ids + 1),
__alignof__(*imsic->lpriv));
imsic->lpriv = alloc_percpu(typeof(*imsic->lpriv));
if (!imsic->lpriv)
return -ENOMEM;
@ -511,6 +511,12 @@ static int __init imsic_local_init(void)
timer_setup(&lpriv->timer, imsic_local_timer_callback, TIMER_PINNED);
#endif
/* Allocate vector array */
lpriv->vectors = kcalloc(global->nr_ids + 1, sizeof(*lpriv->vectors),
GFP_KERNEL);
if (!lpriv->vectors)
goto fail_local_cleanup;
/* Setup vector array */
for (i = 0; i <= global->nr_ids; i++) {
vec = &lpriv->vectors[i];

2
drivers/irqchip/irq-riscv-imsic-state.h
View File

@ -40,7 +40,7 @@ struct imsic_local_priv {
#endif
/* Local vector table */
struct imsic_vector vectors[];
struct imsic_vector *vectors;
};
struct imsic_priv {