[PATCH] ARM: locomo: fix locomo irq handling
From: Russell King <hidden>
Date: 2016-09-03 08:22:45
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Accidentally booting Collie on Assabet reveals that the locomo driver incorrectly overwrites gpio-sa1100's chip data for its parent interrupt, leading to oops in sa1100_gpio_unmask() and sa1100_update_edge_regs(). Fix locomo to use the handler data rather than chip data for its parent interrupt. Signed-off-by: Russell King <redacted> --- arch/arm/common/locomo.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 0e97b4b871f9..6c7b06854fce 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c@@ -140,7 +140,7 @@ static struct locomo_dev_info locomo_devices[] = { static void locomo_handler(struct irq_desc *desc) { - struct locomo *lchip = irq_desc_get_chip_data(desc); + struct locomo *lchip = irq_desc_get_handler_data(desc); int req, i; /* Acknowledge the parent IRQ */
@@ -200,8 +200,7 @@ static void locomo_setup_irq(struct locomo *lchip) * Install handler for IRQ_LOCOMO_HW. */ irq_set_irq_type(lchip->irq, IRQ_TYPE_EDGE_FALLING); - irq_set_chip_data(lchip->irq, lchip); - irq_set_chained_handler(lchip->irq, locomo_handler); + irq_set_chained_handler_and_data(lchip->irq, locomo_handler, lchip); /* Install handlers for IRQ_LOCOMO_* */ for ( ; irq <= lchip->irq_base + 3; irq++) {
--
2.1.0