From: rmk+kernel@armlinux.org.uk (Russell King)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: locomo: fix locomo irq handling
Date: Sat, 03 Sep 2016 09:22:45 +0100 [thread overview]
Message-ID: <E1bg6Dt-0002sJ-Or@rmk-PC.armlinux.org.uk> (raw)
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 <rmk+kernel@armlinux.org.uk>
---
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
reply other threads:[~2016-09-03 8:22 UTC|newest]
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