From 18ea8e01b08c0f2ad5bcbc608a66ecc2bbedd370 Mon Sep 17 00:00:00 2001 From: Oussama Ghorbel Date: Mon, 28 Nov 2016 16:20:59 +0100 Subject: [PATCH 2/2] usb: dwc_otg: enable fiq stat This patch relies on the following patch: 'arm: add stat support to fiq' Signed-off-by: Oussama Ghorbel --- drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c | 5 +++++ drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c | 7 +++++-- 2 files changed, 10 insertions(+), 2 deletions(-) Index: linux-5.10.52-rt47/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c =================================================================== --- linux-5.10.52-rt47.orig/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c +++ linux-5.10.52-rt47/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c @@ -51,6 +51,7 @@ */ #include "dwc_otg_fiq_fsm.h" +#include char buffer[1000*16]; @@ -1235,6 +1236,7 @@ static int notrace noinline fiq_fsm_do_h return handled; } +extern struct fiq_handler dwc_usb_fh; /** * dwc_otg_fiq_fsm() - Flying State Machine (monster) FIQ @@ -1264,6 +1266,9 @@ void notrace dwc_otg_fiq_fsm(struct fiq_ /* Ensure peripheral reads issued prior to FIQ entry are complete */ dsb(sy); + if (dwc_usb_fh.fiq_kstat) + fiq_kstat_this_cpu_inc(&dwc_usb_fh); + gintsts_handled.d32 = 0; haint_handled.d32 = 0; Index: linux-5.10.52-rt47/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c =================================================================== --- linux-5.10.52-rt47.orig/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c +++ linux-5.10.52-rt47/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c @@ -433,7 +433,7 @@ irqreturn_t fiq_irq_handler(int irq, voi } #else -static struct fiq_handler fh = { +struct fiq_handler dwc_usb_fh = { .name = "usb_fiq", }; @@ -450,7 +450,10 @@ static void hcd_init_fiq(void *cookie) struct pt_regs regs; int irq; - if (claim_fiq(&fh)) { + if (fiq_kstat_enable(&dwc_usb_fh)) + DWC_ERROR("Can't enable fiq kstat"); + + if (claim_fiq(&dwc_usb_fh)) { DWC_ERROR("Can't claim FIQ"); BUG(); }