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Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull irq fixes from Thomas Gleixner:
 "A set of small fixes for the irq subsystem:

   - Cure a data ordering problem with chained interrupts

   - Three small fixlets for the mbigen irq chip"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Fix chained interrupt data ordering
  irqchip/mbigen: Fix the clear register offset calculation
  irqchip/mbigen: Fix potential NULL dereferencing
  irqchip/mbigen: Fix memory mapping code
This commit is contained in:
Linus Torvalds 2017-05-21 11:45:26 -07:00
commit e7a3d62749
2 changed files with 11 additions and 8 deletions
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17
drivers/irqchip/irq-mbigen.c
View File

@ -106,10 +106,7 @@ static inline void get_mbigen_type_reg(irq_hw_number_t hwirq,
static inline void get_mbigen_clear_reg(irq_hw_number_t hwirq,
u32 *mask, u32 *addr)
{
unsigned int ofst;
hwirq -= RESERVED_IRQ_PER_MBIGEN_CHIP;
ofst = hwirq / 32 * 4;
unsigned int ofst = (hwirq / 32) * 4;
*mask = 1 << (hwirq % 32);
*addr = ofst + REG_MBIGEN_CLEAR_OFFSET;
@ -337,9 +334,15 @@ static int mbigen_device_probe(struct platform_device *pdev)
mgn_chip->pdev = pdev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mgn_chip->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(mgn_chip->base))
return PTR_ERR(mgn_chip->base);
if (!res)
return -EINVAL;
mgn_chip->base = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (!mgn_chip->base) {
dev_err(&pdev->dev, "failed to ioremap %pR\n", res);
return -ENOMEM;
}
if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node)
err = mbigen_of_create_domain(pdev, mgn_chip);

2
kernel/irq/chip.c
View File

@ -880,8 +880,8 @@ irq_set_chained_handler_and_data(unsigned int irq, irq_flow_handler_t handle,
if (!desc)
return;
__irq_do_set_handler(desc, handle, 1, NULL);
desc->irq_common_data.handler_data = data;
__irq_do_set_handler(desc, handle, 1, NULL);
irq_put_desc_busunlock(desc, flags);
}