[RK3288] 外接USB设备出现丢数

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.c
old mode
new mode
index ce24a7e..458edaa
--- a/kernel/drivers/irqchip/irq-gic.c
+++ b/kernel/drivers/irqchip/irq-gic.c
@@ -, +, @@ 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)!=) && (gic_irq(d)!=))
+               writel_relaxed(val | bit, reg);
        raw_spin_unlock(&irq_controller_lock);

        return IRQ_SET_MASK_OK;
@@ -, +, @@ static void __init gic_dist_init(struct gic_chip_data *gic)
        for (i = ; i < gic_irqs; i += )
                writel_relaxed(cpumask, base + GIC_DIST_TARGET + i *  / );

+       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_DEBUGGER
diff --git a/kernel/drivers/usb/dwc_otg_310/common_port/dwc_list.h b/kernel/drivers/usb/dwc_otg_310/common_port/dwc_list.h
old mode
new mode
index 46f1da3..7b75033
--- a/kernel/drivers/usb/dwc_otg_310/common_port/dwc_list.h
+++ b/kernel/drivers/usb/dwc_otg_310/common_port/dwc_list.h
@@ -, +, @@ struct {                                                           \
        (head)->cqh_last = (elm);                                       \
 } while ()

+#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 ()
+
 #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/usb/dwc_otg_310/dwc_otg_hcd_intr.c b/kernel/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
old mode
new mode
index 0e05b13..a1a067f
--- a/kernel/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
+++ b/kernel/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
@@ -, +, @@ static void release_channel(dwc_otg_hcd_t *hcd,
        dwc_otg_transaction_type_e tr_type;
        int free_qtd;
        int continue_trans = ;
+       dwc_hc_t *hc_tmp = NULL;

        DWC_DEBUGPL(DBG_HCDV, "  %s: channel %d, halt_status %d\n",
                    __func__, hc->hc_num, halt_status);
@@ -, +, @@ 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: