You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.7 KiB
90 lines
2.7 KiB
From 1690e8f8efdeedbd23bb34a3bc5803c34f2d3f66 Mon Sep 17 00:00:00 2001
|
|
From: Gabor Juhos <juhosg@openwrt.org>
|
|
Date: Tue, 29 Jan 2013 16:13:17 +0000
|
|
Subject: [PATCH] MIPS: ath79: simplify MISC IRQ handling
|
|
|
|
commit 9c099c4e79b67d5578ce8142e6214950be4fcf43 upstream.
|
|
|
|
The current code uses multiple if statements for
|
|
demultiplexing the different interrupt sources.
|
|
Additionally, the MISC interrupt controller has
|
|
32 interrupt sources and the current code does not
|
|
handles all of them.
|
|
|
|
Get rid of the if statements and process all interrupt
|
|
sources in a loop to fix these issues.
|
|
|
|
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
|
|
Patchwork: http://patchwork.linux-mips.org/patch/4874/
|
|
Signed-off-by: John Crispin <blogic@openwrt.org>
|
|
---
|
|
arch/mips/ath79/irq.c | 45 +++++++-------------------------
|
|
arch/mips/include/asm/mach-ath79/irq.h | 1 +
|
|
2 files changed, 10 insertions(+), 36 deletions(-)
|
|
|
|
--- a/arch/mips/ath79/irq.c
|
|
+++ b/arch/mips/ath79/irq.c
|
|
@@ -35,44 +35,17 @@ static void ath79_misc_irq_handler(unsig
|
|
pending = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS) &
|
|
__raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE);
|
|
|
|
- if (pending & MISC_INT_UART)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_UART);
|
|
-
|
|
- else if (pending & MISC_INT_DMA)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_DMA);
|
|
-
|
|
- else if (pending & MISC_INT_PERFC)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_PERFC);
|
|
-
|
|
- else if (pending & MISC_INT_TIMER)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_TIMER);
|
|
-
|
|
- else if (pending & MISC_INT_TIMER2)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_TIMER2);
|
|
-
|
|
- else if (pending & MISC_INT_TIMER3)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_TIMER3);
|
|
-
|
|
- else if (pending & MISC_INT_TIMER4)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_TIMER4);
|
|
-
|
|
- else if (pending & MISC_INT_OHCI)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_OHCI);
|
|
-
|
|
- else if (pending & MISC_INT_ERROR)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_ERROR);
|
|
-
|
|
- else if (pending & MISC_INT_GPIO)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_GPIO);
|
|
-
|
|
- else if (pending & MISC_INT_WDOG)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_WDOG);
|
|
+ if (!pending) {
|
|
+ spurious_interrupt();
|
|
+ return;
|
|
+ }
|
|
|
|
- else if (pending & MISC_INT_ETHSW)
|
|
- generic_handle_irq(ATH79_MISC_IRQ_ETHSW);
|
|
+ while (pending) {
|
|
+ int bit = __ffs(pending);
|
|
|
|
- else
|
|
- spurious_interrupt();
|
|
+ generic_handle_irq(ATH79_MISC_IRQ(bit));
|
|
+ pending &= ~BIT(bit);
|
|
+ }
|
|
}
|
|
|
|
static void ar71xx_misc_irq_unmask(struct irq_data *d)
|
|
--- a/arch/mips/include/asm/mach-ath79/irq.h
|
|
+++ b/arch/mips/include/asm/mach-ath79/irq.h
|
|
@@ -14,6 +14,7 @@
|
|
|
|
#define ATH79_MISC_IRQ_BASE 8
|
|
#define ATH79_MISC_IRQ_COUNT 32
|
|
+#define ATH79_MISC_IRQ(_x) (ATH79_MISC_IRQ_BASE + (_x))
|
|
|
|
#define ATH79_PCI_IRQ_BASE (ATH79_MISC_IRQ_BASE + ATH79_MISC_IRQ_COUNT)
|
|
#define ATH79_PCI_IRQ_COUNT 6
|
|
|