On 10/3/2017 9:17 AM, Grygorii Strashko wrote:
Now acking of edge irqs happens the following way: - omap_gpio_irq_handler - "isr" = read irq status - omap_clear_gpio_irqbank(bank, isr_saved & ~level_mask); ^ clear edge status, so irq can be accepted - loop while "isr" generic_handle_irq() - handle_edge_irq() - desc->irq_data.chip->irq_ack(&desc->irq_data); - omap_gpio_ack_irq() it might be that at this moment edge IRQ was triggered again and it will be cleared and IRQ will be lost. Use handle_simple_irq and clear edge interrupts early without disabling them in omap_gpio_irq_handler to avoid loosing interrupts. [1] https://urldefense.proofpoint.com/v2/url?u=https-3A__marc.info_-3Fl-3Dlinux-2Domap-26m-3D149004465313534-26w-3D2&d=DwIBAg&c=RoP1YumCXCgaWHvlZYR8PQcxBKCX5YTpkKY057SbK10&r=XBn1JQGPwR8CsE7xpP3wPlG6DQU7qw8ym65xieNZ4hY&m=-JZAaXlsRBFYNqtZ-2KOemoupa4pL7ka9D3wKn6hX9o&s=c-1XuQUl3_1uYedoNhmY70xCO3fAftWB7cmFxgyC3j4&e= Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx> Signed-off-by: Ladislav Michl <ladis@xxxxxxxxxxxxxx> --- Resend with proper cc list.
This was one of the concern I was thinking when GPIO IRQ conversion was done. Grygorii since you did that conversion, can you please check since I see now that the irq code is becoming increasingly complex. Regards, Santosh -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
