This functions are added for properly controlling primary controller in uart interrupt chained handler.
Signed-off-by: Changhwan Youn <[email protected]> --- arch/arm/plat-samsung/irq-uart.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-samsung/irq-uart.c b/arch/arm/plat-samsung/irq-uart.c index 4e77035..24da4d4 100644 --- a/arch/arm/plat-samsung/irq-uart.c +++ b/arch/arm/plat-samsung/irq-uart.c @@ -23,6 +23,7 @@ #include <plat/irq-uart.h> #include <plat/regs-serial.h> #include <plat/cpu.h> +#include <asm/mach/irq.h> /* Note, we make use of the fact that the parent IRQs, IRQ_UART[0..3] * are consecutive when looking up the interrupt in the demux routines. @@ -86,6 +87,9 @@ static void s3c_irq_demux_uart(unsigned int irq, struct irq_desc *desc) struct s3c_uart_irq *uirq = desc->irq_data.handler_data; u32 pend = __raw_readl(uirq->regs + S3C64XX_UINTP); int base = uirq->base_irq; + struct irq_chip *chip = get_irq_chip(irq); + + chained_irq_enter(chip, desc); if (pend & (1 << 0)) generic_handle_irq(base); @@ -95,6 +99,8 @@ static void s3c_irq_demux_uart(unsigned int irq, struct irq_desc *desc) generic_handle_irq(base + 2); if (pend & (1 << 3)) generic_handle_irq(base + 3); + + chained_irq_exit(chip, desc); } static struct irq_chip s3c_irq_uart = { -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
