CPU：RK3288
系统：Android 5.1
主板外接 USB 接口的外设，经常会出现丢数的现象，这种问题在很多 USB 接口的外设上都遇到过，例如：USB读卡器、USB扫描枪等
有一个共同点是外设在系统中作为一个键盘设备，相当于键盘输入。
直接上RK提供的补丁，此补丁优化很大，但是没有根本解决问题，偶尔还会出现丢数
diff --git a/kernel/drivers/irqchip/irq-gic.c b/kernel/drivers/irqchip/irq-gic.cold mode 100755new mode 100644index ce24a7e..458edaa--- a/kernel/drivers/irqchip/irq-gic.c+++ b/kernel/drivers/irqchip/irq-gic.c@@ -266,6 +266,8 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, bit = gic_cpu_map[cpu] << shift; val = readl_relaxed(reg) & ~mask; writel_relaxed(val | bit, reg);+ if((gic_irq(d)!=57) && (gic_irq(d)!=55))+ writel_relaxed(val | bit, reg); raw_spin_unlock(&irq_controller_lock); return IRQ_SET_MASK_OK;@@ -399,6 +401,11 @@ static void __init gic_dist_init(struct gic_chip_data *gic) for (i = 32; i < gic_irqs; i += 4) writel_relaxed(cpumask, base + GIC_DIST_TARGET + i * 4 / 4); + writel_relaxed(0x01010f01, base + GIC_DIST_TARGET + 0x38);+ writel_relaxed(0xa0a090a0, base + GIC_DIST_PRI + 0x38);+ writel_relaxed(0x0f010101, base + GIC_DIST_TARGET + 0x34);+ writel_relaxed(0x90a0a0a0, base + GIC_DIST_PRI + 0x34);+ gic_dist_config(base, gic_irqs, NULL); #ifdef CONFIG_FIQ_DEBUGGERdiff --git a/kernel/drivers/u***/dwc_otg_310/common_port/dwc_list.h b/kernel/drivers/u***/dwc_otg_310/common_port/dwc_list.hold mode 100755new mode 100644index 46f1da3..7b75033--- a/kernel/drivers/u***/dwc_otg_310/common_port/dwc_list.h+++ b/kernel/drivers/u***/dwc_otg_310/common_port/dwc_list.h@@ -565,6 +565,18 @@ struct { (head)->cqh_last = (elm); } while (0) +#define DWC_CIRCLEQ_INSERT_COM(head, listelm, elm, field, com) do { + DWC_CIRCLEQ_FOREACH(listelm, head, field) { + if ((elm)->com < (listelm)->com) { + DWC_CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field); + break; + } else + continue; + } + if (DWC_CIRCLEQ_PREV(listelm, field) != elm) + DWC_CIRCLEQ_INSERT_TAIL(head, elm, field); +} while (0)+ #define DWC_CIRCLEQ_REMOVE(head, elm, field) do { if ((elm)->field.cqe_next == DWC_CIRCLEQ_END(head)) (head)->cqh_last = (elm)->field.cqe_prev; diff --git a/kernel/drivers/u***/dwc_otg_310/dwc_otg_hcd_intr.c b/kernel/drivers/u***/dwc_otg_310/dwc_otg_hcd_intr.cold mode 100755new mode 100644index 0e05b13..a1a067f--- a/kernel/drivers/u***/dwc_otg_310/dwc_otg_hcd_intr.c+++ b/kernel/drivers/u***/dwc_otg_310/dwc_otg_hcd_intr.c@@ -833,6 +833,7 @@ static void release_channel(dwc_otg_hcd_t *hcd, dwc_otg_transaction_type_e tr_type; int free_qtd; int continue_trans = 1;+ dwc_hc_t *hc_tmp = NULL; DWC_DEBUGPL(DBG_HCDV, " %s: channel %d, halt_status %dn", __func__, hc->hc_num, halt_status);@@ -893,7 +894,7 @@ cleanup: * there's no need to clear the Channel Halted interrupt separately. */ dwc_otg_hc_cleanup(hcd->core_if, hc);- DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);+ DWC_CIRCLEQ_INSERT_COM(&hcd->free_hc_list, hc_tmp, hc, hc_list_entry, hc_num); switch (hc->ep_type) { case DWC_OTG_EP_TYPE_CONTROL:
|
电子发烧友论坛
0
/7 
工商网监
湘ICP备2023018690号
2991
淘帖
78
赞
显身卡
回复
