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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-21 11:45:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-21 11:45:26 -0700 |
| commit | e7a3d62749183576854cdc961b8b1cddf1aed71e (patch) | |
| tree | 3f4933ce4735ba563eea155317138e45a217563d | |
| parent | 56f410cf45a1c1f68f77741990e0435b06a07676 (diff) | |
| parent | 2c4569ca26986d18243f282dd727da27e9adae4c (diff) | |
| download | linux-e7a3d62749183576854cdc961b8b1cddf1aed71e.tar.bz2 | |
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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
| -rw-r--r-- | drivers/irqchip/irq-mbigen.c | 17 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 2 |
2 files changed, 11 insertions, 8 deletions
diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c index d2306c821ebb..31d6b5a582d2 100644 --- a/drivers/irqchip/irq-mbigen.c +++ b/drivers/irqchip/irq-mbigen.c @@ -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); diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 686be4b73018..c94da688ee9b 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -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); } |