From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/dma/ipu/ipu_irq.c | 64 +++++++--------------------------------- 1 file changed, 10 insertions(+), 54 deletions(-) (limited to 'kernel/drivers/dma/ipu/ipu_irq.c') diff --git a/kernel/drivers/dma/ipu/ipu_irq.c b/kernel/drivers/dma/ipu/ipu_irq.c index 2e284a443..2bf37e68a 100644 --- a/kernel/drivers/dma/ipu/ipu_irq.c +++ b/kernel/drivers/dma/ipu/ipu_irq.c @@ -265,10 +265,10 @@ int ipu_irq_unmap(unsigned int source) return ret; } -/* Chained IRQ handler for IPU error interrupt */ -static void ipu_irq_err(unsigned int irq, struct irq_desc *desc) +/* Chained IRQ handler for IPU function and error interrupt */ +static void ipu_irq_handler(struct irq_desc *desc) { - struct ipu *ipu = irq_get_handler_data(irq); + struct ipu *ipu = irq_desc_get_handler_data(desc); u32 status; int i, line; @@ -286,43 +286,7 @@ static void ipu_irq_err(unsigned int irq, struct irq_desc *desc) raw_spin_unlock(&bank_lock); while ((line = ffs(status))) { struct ipu_irq_map *map; - - line--; - status &= ~(1UL << line); - - raw_spin_lock(&bank_lock); - map = src2map(32 * i + line); - if (map) - irq = map->irq; - raw_spin_unlock(&bank_lock); - - if (!map) { - pr_err("IPU: Interrupt on unmapped source %u bank %d\n", - line, i); - continue; - } - generic_handle_irq(irq); - } - } -} - -/* Chained IRQ handler for IPU function interrupt */ -static void ipu_irq_fn(unsigned int irq, struct irq_desc *desc) -{ - struct ipu *ipu = irq_desc_get_handler_data(desc); - u32 status; - int i, line; - - for (i = 0; i < IPU_IRQ_NR_FN_BANKS; i++) { - struct ipu_irq_bank *bank = irq_bank + i; - - raw_spin_lock(&bank_lock); - status = ipu_read_reg(ipu, bank->status); - /* Not clearing all interrupts, see above */ - status &= ipu_read_reg(ipu, bank->control); - raw_spin_unlock(&bank_lock); - while ((line = ffs(status))) { - struct ipu_irq_map *map; + unsigned int irq = NO_IRQ; line--; status &= ~(1UL << line); @@ -377,16 +341,12 @@ int __init ipu_irq_attach_irq(struct ipu *ipu, struct platform_device *dev) irq_map[i].irq = irq; irq_map[i].source = -EINVAL; irq_set_handler(irq, handle_level_irq); -#ifdef CONFIG_ARM - set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); -#endif + irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE); } - irq_set_handler_data(ipu->irq_fn, ipu); - irq_set_chained_handler(ipu->irq_fn, ipu_irq_fn); + irq_set_chained_handler_and_data(ipu->irq_fn, ipu_irq_handler, ipu); - irq_set_handler_data(ipu->irq_err, ipu); - irq_set_chained_handler(ipu->irq_err, ipu_irq_err); + irq_set_chained_handler_and_data(ipu->irq_err, ipu_irq_handler, ipu); ipu->irq_base = irq_base; @@ -399,16 +359,12 @@ void ipu_irq_detach_irq(struct ipu *ipu, struct platform_device *dev) irq_base = ipu->irq_base; - irq_set_chained_handler(ipu->irq_fn, NULL); - irq_set_handler_data(ipu->irq_fn, NULL); + irq_set_chained_handler_and_data(ipu->irq_fn, NULL, NULL); - irq_set_chained_handler(ipu->irq_err, NULL); - irq_set_handler_data(ipu->irq_err, NULL); + irq_set_chained_handler_and_data(ipu->irq_err, NULL, NULL); for (irq = irq_base; irq < irq_base + CONFIG_MX3_IPU_IRQS; irq++) { -#ifdef CONFIG_ARM - set_irq_flags(irq, 0); -#endif + irq_set_status_flags(irq, IRQ_NOREQUEST); irq_set_chip(irq, NULL); irq_set_chip_data(irq, NULL); } -- cgit 1.2.3-korg