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f586dd67ac
Boot tested on Comtrend AR-5387un: https://gist.github.com/Noltari/57e5030455da8dc38e61f8c3a5922254 Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> [jonas.gorski: make 4.19 an optional testing version; add gcc 8.3 fix] Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
204 lines
5.8 KiB
Diff
204 lines
5.8 KiB
Diff
From 51559154375fff4a94bbbc249fdd9248a80827b3 Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jonas.gorski@gmail.com>
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Date: Tue, 18 Dec 2018 10:19:02 +0100
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Subject: [PATCH] MIPS: BCM63XX: drop unused and broken DSP platform device
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Trying to register the DSP platform device results in a null pointer
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access:
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[ 0.124184] CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 804e305c, ra == 804e6f20
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[ 0.135208] Oops[#1]:
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[ 0.137514] CPU: 0 PID: 1 Comm: swapper Not tainted 4.14.87
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...
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[ 0.197117] epc : 804e305c bcm63xx_dsp_register+0x80/0xa4
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[ 0.202838] ra : 804e6f20 board_register_devices+0x258/0x390
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...
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This happens because it tries to copy the passed platform data over the
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platform_device's unpopulated platform_data.
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Since this code has been broken since its submission, no driver was ever
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submitted for it, and apparently nobody was using it, just remove it
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instead of trying to fix it.
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Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.")
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Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
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---
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arch/mips/bcm63xx/Makefile | 6 +--
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arch/mips/bcm63xx/boards/board_bcm963xx.c | 20 --------
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arch/mips/bcm63xx/dev-dsp.c | 56 ----------------------
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.../include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h | 14 ------
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.../mips/include/asm/mach-bcm63xx/board_bcm963xx.h | 5 --
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5 files changed, 3 insertions(+), 98 deletions(-)
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delete mode 100644 arch/mips/bcm63xx/dev-dsp.c
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delete mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h
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--- a/arch/mips/bcm63xx/Makefile
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+++ b/arch/mips/bcm63xx/Makefile
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@@ -1,8 +1,8 @@
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# SPDX-License-Identifier: GPL-2.0
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obj-y += clk.o cpu.o cs.o gpio.o irq.o nvram.o prom.o reset.o \
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- setup.o timer.o dev-dsp.o dev-enet.o dev-flash.o \
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- dev-pcmcia.o dev-rng.o dev-spi.o dev-hsspi.o dev-uart.o \
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- dev-wdt.o dev-usb-usbd.o
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+ setup.o timer.o dev-enet.o dev-flash.o dev-pcmcia.o \
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+ dev-rng.o dev-spi.o dev-hsspi.o dev-uart.o dev-wdt.o \
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+ dev-usb-usbd.o
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obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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obj-y += boards/
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--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
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+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
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@@ -23,7 +23,6 @@
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#include <bcm63xx_nvram.h>
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#include <bcm63xx_dev_pci.h>
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#include <bcm63xx_dev_enet.h>
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-#include <bcm63xx_dev_dsp.h>
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#include <bcm63xx_dev_flash.h>
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#include <bcm63xx_dev_hsspi.h>
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#include <bcm63xx_dev_pcmcia.h>
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@@ -289,14 +288,6 @@ static struct board_info __initdata boar
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.has_pccard = 1,
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.has_ehci0 = 1,
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- .has_dsp = 1,
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- .dsp = {
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- .gpio_rst = 6,
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- .gpio_int = 34,
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- .cs = 2,
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- .ext_irq = 2,
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- },
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-
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.leds = {
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{
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.name = "adsl-fail",
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@@ -401,14 +392,6 @@ static struct board_info __initdata boar
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.has_ohci0 = 1,
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- .has_dsp = 1,
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- .dsp = {
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- .gpio_rst = 6,
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- .gpio_int = 34,
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- .ext_irq = 2,
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- .cs = 2,
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- },
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-
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.leds = {
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{
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.name = "adsl-fail",
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@@ -898,9 +881,6 @@ int __init board_register_devices(void)
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if (board.has_usbd)
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bcm63xx_usbd_register(&board.usbd);
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- if (board.has_dsp)
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- bcm63xx_dsp_register(&board.dsp);
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-
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/* Generate MAC address for WLAN and register our SPROM,
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* do this after registering enet devices
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*/
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--- a/arch/mips/bcm63xx/dev-dsp.c
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+++ /dev/null
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@@ -1,56 +0,0 @@
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-/*
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- * Broadcom BCM63xx VoIP DSP registration
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- *
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- * This file is subject to the terms and conditions of the GNU General Public
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- * License. See the file "COPYING" in the main directory of this archive
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- * for more details.
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- *
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- * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org>
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- */
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-
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-#include <linux/init.h>
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-#include <linux/kernel.h>
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-#include <linux/platform_device.h>
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-
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-#include <bcm63xx_cpu.h>
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-#include <bcm63xx_dev_dsp.h>
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-#include <bcm63xx_regs.h>
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-#include <bcm63xx_io.h>
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-
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-static struct resource voip_dsp_resources[] = {
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- {
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- .start = -1, /* filled at runtime */
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- .end = -1, /* filled at runtime */
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- .flags = IORESOURCE_MEM,
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- },
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- {
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- .start = -1, /* filled at runtime */
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- .flags = IORESOURCE_IRQ,
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- },
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-};
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-
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-static struct platform_device bcm63xx_voip_dsp_device = {
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- .name = "bcm63xx-voip-dsp",
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- .id = -1,
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- .num_resources = ARRAY_SIZE(voip_dsp_resources),
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- .resource = voip_dsp_resources,
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-};
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-
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-int __init bcm63xx_dsp_register(const struct bcm63xx_dsp_platform_data *pd)
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-{
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- struct bcm63xx_dsp_platform_data *dpd;
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- u32 val;
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-
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- /* Get the memory window */
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- val = bcm_mpi_readl(MPI_CSBASE_REG(pd->cs - 1));
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- val &= MPI_CSBASE_BASE_MASK;
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- voip_dsp_resources[0].start = val;
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- voip_dsp_resources[0].end = val + 0xFFFFFFF;
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- voip_dsp_resources[1].start = pd->ext_irq;
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-
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- /* copy given platform data */
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- dpd = bcm63xx_voip_dsp_device.dev.platform_data;
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- memcpy(dpd, pd, sizeof (*pd));
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-
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- return platform_device_register(&bcm63xx_voip_dsp_device);
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-}
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--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h
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+++ /dev/null
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@@ -1,14 +0,0 @@
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-/* SPDX-License-Identifier: GPL-2.0 */
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-#ifndef __BCM63XX_DSP_H
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-#define __BCM63XX_DSP_H
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-
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-struct bcm63xx_dsp_platform_data {
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- unsigned gpio_rst;
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- unsigned gpio_int;
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- unsigned cs;
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- unsigned ext_irq;
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-};
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-
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-int __init bcm63xx_dsp_register(const struct bcm63xx_dsp_platform_data *pd);
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-
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-#endif /* __BCM63XX_DSP_H */
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--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
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+++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
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@@ -7,7 +7,6 @@
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#include <linux/leds.h>
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#include <bcm63xx_dev_enet.h>
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#include <bcm63xx_dev_usb_usbd.h>
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-#include <bcm63xx_dev_dsp.h>
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/*
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* flash mapping
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@@ -31,7 +30,6 @@ struct board_info {
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unsigned int has_ohci0:1;
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unsigned int has_ehci0:1;
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unsigned int has_usbd:1;
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- unsigned int has_dsp:1;
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unsigned int has_uart0:1;
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unsigned int has_uart1:1;
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@@ -43,9 +41,6 @@ struct board_info {
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/* USB config */
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struct bcm63xx_usbd_platform_data usbd;
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- /* DSP config */
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- struct bcm63xx_dsp_platform_data dsp;
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-
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/* GPIO LEDs */
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struct gpio_led leds[5];
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