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Message-Id: <1246340746.4819.3.camel@subratamodak.linux.ibm.com>
Date: Tue, 30 Jun 2009 11:15:46 +0530
From: Subrata Modak <subrata@...ux.vnet.ibm.com>
To: Scott Wood <scottwood@...escale.com>,
David Woodhouse <dwmw2@...radead.org>
Cc: linux-kernel <linux-kernel@...r.kernel.org>,
Alexander Beregalov <a.beregalov@...il.com>,
linux-next <linux-next@...r.kernel.org>,
Jim Cromie <jim.cromie@...il.com>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Linuxppc-dev <Linuxppc-dev@...abs.org>,
carolyn.j.smith@...ate.tek.com,
Sachin P Sant <sachinp@...ux.vnet.ibm.com>,
Balbir Singh <balbir@...ux.vnet.ibm.com>,
Adrian Bunk <bunk@...nel.org>
Subject: [PATCH] Remove 'SBC8240 Wind River' Device Driver Code
Scott/David,
Your say on this patch below ?
Regards--
Subrata
On Fri, 2009-06-26 at 09:25 -0500, Subrata Modak wrote:
> Hi David/Scott,
>
> Today's next tree(20090626) produced the following build error:
>
> CC [M] drivers/mtd/maps/sbc8240.o
> drivers/mtd/maps/sbc8240.c:31:1: warning: "DEBUG" redefined
> In file included from drivers/mtd/maps/sbc8240.c:23:
> include/linux/mtd/mtd.h:333:1: warning: this is the location of the previous definition
> drivers/mtd/maps/sbc8240.c: In function 'init_sbc8240_mtd':
> drivers/mtd/maps/sbc8240.c:172: warning: passing argument 1 of 'simple_map_init' from incompatible pointer type
> drivers/mtd/maps/sbc8240.c:177: error: 'struct mtd_info' has no member named 'module'
> make[3]: *** [drivers/mtd/maps/sbc8240.o] Error 1
> make[2]: *** [drivers/mtd/maps] Error 2
> make[1]: *** [drivers/mtd] Error 2
> make: *** [drivers] Error 2
>
> I remember reporting this log back in April, when you suggested in removing it:
> http://lkml.org/lkml/2009/4/21/476,
>
> >On Tue, 2009-04-21 at 15:00 -0500, Scott Wood wrote:
> >Subrata Modak wrote:
> > > This is a very old one. DoesnB4t seem to go away. Reported this earlier
> > > on 14th April:
> > > http://lkml.org/lkml/2009/4/14/483,
> > >
> > > CC [M] drivers/mtd/maps/sbc8240.o
> > > drivers/mtd/maps/sbc8240.c:31:1: warning: "DEBUG" redefined
> > > In file included from drivers/mtd/maps/sbc8240.c:23:
> > > include/linux/mtd/mtd.h:339:1: warning: this is the location of the
> > > previous definition
> > > drivers/mtd/maps/sbc8240.c: In function b.init_sbc8240_mtdb.:
> > > drivers/mtd/maps/sbc8240.c:172: error: b.sbc8240_mtdb. undeclared (first
> > > use in this function)
> > > drivers/mtd/maps/sbc8240.c:172: error: (Each undeclared identifier is
> > > reported only once
> > > drivers/mtd/maps/sbc8240.c:172: error: for each function it appears in.)
> > > drivers/mtd/maps/sbc8240.c: In function b.cleanup_sbc8240_mtdb.:
> > > drivers/mtd/maps/sbc8240.c:233: error: b.sbc8240_mtdb. undeclared (first
> > > use in this function)
> >
> > This looks like an arch/ppc orphan. It's not enabled by any defconfig,
> > and it doesn't look like it does anything that physmap_of can't do.
> >
> > I'd just remove it.
> >
> > -Scott
>
> I tried to gather some more info about this driver from the link
> mentioned in Kconfig:
> http://www.windriver.com/products/sbc8240/,
> without much success.
>
> If there are no issues, can you please apply this patch to remove it ?
>
> To: David Woodhouse <dwmw2@...radead.org>,
> To: Scott Wood <scottwood@...escale.com>,
> Cc: Jim Cromie <jim.cromie@...il.com>,
> Cc: carolyn.j.smith@...ate.tek.com,
> Cc: Adrian Bunk <bunk@...nel.org>,
> Cc: Sachin P Sant <sachinp@...ux.vnet.ibm.com>,
> Cc: Balbir Singh <balbir@...ux.vnet.ibm.com>,
> Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
> Cc: linux-kernel <linux-kernel@...r.kernel.org>,
> Cc: Linuxppc-dev <Linuxppc-dev@...abs.org>,
> Cc: linux-next <linux-next@...r.kernel.org>,
> Cc: Alexander Beregalov <a.beregalov@...il.com>
>
>
> Signed-off-by: Subrata Modak <subrata@...ux.vnet.ibm.com>
> Tested-on-PPC64-by: Subrata Modak <subrata@...ux.vnet.ibm.com>
> ---
>
> diff -uprN a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
> --- a/drivers/mtd/maps/Kconfig 2009-06-26 07:36:23.000000000 -0500
> +++ b/drivers/mtd/maps/Kconfig 2009-06-26 07:39:34.000000000 -0500
> @@ -284,13 +284,6 @@ config MTD_L440GX
>
> BE VERY CAREFUL.
>
> -config MTD_SBC8240
> - tristate "Flash device on SBC8240"
> - depends on MTD_JEDECPROBE && 8260
> - help
> - Flash access on the SBC8240 board from Wind River. See
> - <http://www.windriver.com/products/sbc8240/>
> -
> config MTD_TQM8XXL
> tristate "CFI Flash device mapped on TQM8XXL"
> depends on MTD_CFI && TQM8xxL
> diff -uprN a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
> --- a/drivers/mtd/maps/Makefile 2009-06-26 07:36:23.000000000 -0500
> +++ b/drivers/mtd/maps/Makefile 2009-06-26 07:40:03.000000000 -0500
> @@ -50,7 +50,6 @@ obj-$(CONFIG_MTD_UCLINUX) += uclinux.o
> obj-$(CONFIG_MTD_NETtel) += nettel.o
> obj-$(CONFIG_MTD_SCB2_FLASH) += scb2_flash.o
> obj-$(CONFIG_MTD_H720X) += h720x-flash.o
> -obj-$(CONFIG_MTD_SBC8240) += sbc8240.o
> obj-$(CONFIG_MTD_IXP4XX) += ixp4xx.o
> obj-$(CONFIG_MTD_IXP2000) += ixp2000.o
> obj-$(CONFIG_MTD_WRSBC8260) += wr_sbc82xx_flash.o
> diff -uprN a/drivers/mtd/maps/sbc8240.c b/drivers/mtd/maps/sbc8240.c
> --- a/drivers/mtd/maps/sbc8240.c 2009-06-26 07:36:23.000000000 -0500
> +++ b/drivers/mtd/maps/sbc8240.c 1969-12-31 18:00:00.000000000 -0600
> @@ -1,250 +0,0 @@
> -/*
> - * Handle mapping of the flash memory access routines on the SBC8240 board.
> - *
> - * Carolyn Smith, Tektronix, Inc.
> - *
> - * This code is GPLed
> - */
> -
> -/*
> - * The SBC8240 has 2 flash banks.
> - * Bank 0 is a 512 KiB AMD AM29F040B; 8 x 64 KiB sectors.
> - * It contains the U-Boot code (7 sectors) and the environment (1 sector).
> - * Bank 1 is 4 x 1 MiB AMD AM29LV800BT; 15 x 64 KiB sectors, 1 x 32 KiB sector,
> - * 2 x 8 KiB sectors, 1 x 16 KiB sectors.
> - * Both parts are JEDEC compatible.
> - */
> -
> -#include <linux/module.h>
> -#include <linux/types.h>
> -#include <linux/kernel.h>
> -#include <asm/io.h>
> -
> -#include <linux/mtd/mtd.h>
> -#include <linux/mtd/map.h>
> -#include <linux/mtd/cfi.h>
> -
> -#ifdef CONFIG_MTD_PARTITIONS
> -#include <linux/mtd/partitions.h>
> -#endif
> -
> -#define DEBUG
> -
> -#ifdef DEBUG
> -# define debugk(fmt,args...) printk(fmt ,##args)
> -#else
> -# define debugk(fmt,args...)
> -#endif
> -
> -
> -#define WINDOW_ADDR0 0xFFF00000 /* 512 KiB */
> -#define WINDOW_SIZE0 0x00080000
> -#define BUSWIDTH0 1
> -
> -#define WINDOW_ADDR1 0xFF000000 /* 4 MiB */
> -#define WINDOW_SIZE1 0x00400000
> -#define BUSWIDTH1 8
> -
> -#define MSG_PREFIX "sbc8240:" /* prefix for our printk()'s */
> -#define MTDID "sbc8240-%d" /* for mtdparts= partitioning */
> -
> -
> -static struct map_info sbc8240_map[2] = {
> - {
> - .name = "sbc8240 Flash Bank #0",
> - .size = WINDOW_SIZE0,
> - .bankwidth = BUSWIDTH0,
> - },
> - {
> - .name = "sbc8240 Flash Bank #1",
> - .size = WINDOW_SIZE1,
> - .bankwidth = BUSWIDTH1,
> - }
> -};
> -
> -#define NUM_FLASH_BANKS ARRAY_SIZE(sbc8240_map)
> -
> -/*
> - * The following defines the partition layout of SBC8240 boards.
> - *
> - * See include/linux/mtd/partitions.h for definition of the
> - * mtd_partition structure.
> - *
> - * The *_max_flash_size is the maximum possible mapped flash size
> - * which is not necessarily the actual flash size. It must correspond
> - * to the value specified in the mapping definition defined by the
> - * "struct map_desc *_io_desc" for the corresponding machine.
> - */
> -
> -#ifdef CONFIG_MTD_PARTITIONS
> -
> -static struct mtd_partition sbc8240_uboot_partitions [] = {
> - /* Bank 0 */
> - {
> - .name = "U-boot", /* U-Boot Firmware */
> - .offset = 0,
> - .size = 0x00070000, /* 7 x 64 KiB sectors */
> - .mask_flags = MTD_WRITEABLE, /* force read-only */
> - },
> - {
> - .name = "environment", /* U-Boot environment */
> - .offset = 0x00070000,
> - .size = 0x00010000, /* 1 x 64 KiB sector */
> - },
> -};
> -
> -static struct mtd_partition sbc8240_fs_partitions [] = {
> - {
> - .name = "jffs", /* JFFS filesystem */
> - .offset = 0,
> - .size = 0x003C0000, /* 4 * 15 * 64KiB */
> - },
> - {
> - .name = "tmp32",
> - .offset = 0x003C0000,
> - .size = 0x00020000, /* 4 * 32KiB */
> - },
> - {
> - .name = "tmp8a",
> - .offset = 0x003E0000,
> - .size = 0x00008000, /* 4 * 8KiB */
> - },
> - {
> - .name = "tmp8b",
> - .offset = 0x003E8000,
> - .size = 0x00008000, /* 4 * 8KiB */
> - },
> - {
> - .name = "tmp16",
> - .offset = 0x003F0000,
> - .size = 0x00010000, /* 4 * 16KiB */
> - }
> -};
> -
> -/* trivial struct to describe partition information */
> -struct mtd_part_def
> -{
> - int nums;
> - unsigned char *type;
> - struct mtd_partition* mtd_part;
> -};
> -
> -static struct mtd_info *sbc8240_mtd[NUM_FLASH_BANKS];
> -static struct mtd_part_def sbc8240_part_banks[NUM_FLASH_BANKS];
> -
> -
> -#endif /* CONFIG_MTD_PARTITIONS */
> -
> -
> -static int __init init_sbc8240_mtd (void)
> -{
> - static struct _cjs {
> - u_long addr;
> - u_long size;
> - } pt[NUM_FLASH_BANKS] = {
> - {
> - .addr = WINDOW_ADDR0,
> - .size = WINDOW_SIZE0
> - },
> - {
> - .addr = WINDOW_ADDR1,
> - .size = WINDOW_SIZE1
> - },
> - };
> -
> - int devicesfound = 0;
> - int i,j;
> -
> - for (i = 0; i < NUM_FLASH_BANKS; i++) {
> - printk (KERN_NOTICE MSG_PREFIX
> - "Probing 0x%08lx at 0x%08lx\n", pt[i].size, pt[i].addr);
> -
> - sbc8240_map[i].map_priv_1 =
> - (unsigned long) ioremap (pt[i].addr, pt[i].size);
> - if (!sbc8240_map[i].map_priv_1) {
> - printk (MSG_PREFIX "failed to ioremap\n");
> - for (j = 0; j < i; j++) {
> - iounmap((void *) sbc8240_map[j].map_priv_1);
> - sbc8240_map[j].map_priv_1 = 0;
> - }
> - return -EIO;
> - }
> - simple_map_init(&sbc8240_mtd[i]);
> -
> - sbc8240_mtd[i] = do_map_probe("jedec_probe", &sbc8240_map[i]);
> -
> - if (sbc8240_mtd[i]) {
> - sbc8240_mtd[i]->module = THIS_MODULE;
> - devicesfound++;
> - } else {
> - if (sbc8240_map[i].map_priv_1) {
> - iounmap((void *) sbc8240_map[i].map_priv_1);
> - sbc8240_map[i].map_priv_1 = 0;
> - }
> - }
> - }
> -
> - if (!devicesfound) {
> - printk(KERN_NOTICE MSG_PREFIX
> - "No suppported flash chips found!\n");
> - return -ENXIO;
> - }
> -
> -#ifdef CONFIG_MTD_PARTITIONS
> - sbc8240_part_banks[0].mtd_part = sbc8240_uboot_partitions;
> - sbc8240_part_banks[0].type = "static image";
> - sbc8240_part_banks[0].nums = ARRAY_SIZE(sbc8240_uboot_partitions);
> - sbc8240_part_banks[1].mtd_part = sbc8240_fs_partitions;
> - sbc8240_part_banks[1].type = "static file system";
> - sbc8240_part_banks[1].nums = ARRAY_SIZE(sbc8240_fs_partitions);
> -
> - for (i = 0; i < NUM_FLASH_BANKS; i++) {
> -
> - if (!sbc8240_mtd[i]) continue;
> - if (sbc8240_part_banks[i].nums == 0) {
> - printk (KERN_NOTICE MSG_PREFIX
> - "No partition info available, registering whole device\n");
> - add_mtd_device(sbc8240_mtd[i]);
> - } else {
> - printk (KERN_NOTICE MSG_PREFIX
> - "Using %s partition definition\n", sbc8240_part_banks[i].mtd_part->name);
> - add_mtd_partitions (sbc8240_mtd[i],
> - sbc8240_part_banks[i].mtd_part,
> - sbc8240_part_banks[i].nums);
> - }
> - }
> -#else
> - printk(KERN_NOTICE MSG_PREFIX
> - "Registering %d flash banks at once\n", devicesfound);
> -
> - for (i = 0; i < devicesfound; i++) {
> - add_mtd_device(sbc8240_mtd[i]);
> - }
> -#endif /* CONFIG_MTD_PARTITIONS */
> -
> - return devicesfound == 0 ? -ENXIO : 0;
> -}
> -
> -static void __exit cleanup_sbc8240_mtd (void)
> -{
> - int i;
> -
> - for (i = 0; i < NUM_FLASH_BANKS; i++) {
> - if (sbc8240_mtd[i]) {
> - del_mtd_device (sbc8240_mtd[i]);
> - map_destroy (sbc8240_mtd[i]);
> - }
> - if (sbc8240_map[i].map_priv_1) {
> - iounmap ((void *) sbc8240_map[i].map_priv_1);
> - sbc8240_map[i].map_priv_1 = 0;
> - }
> - }
> -}
> -
> -module_init (init_sbc8240_mtd);
> -module_exit (cleanup_sbc8240_mtd);
> -
> -MODULE_LICENSE ("GPL");
> -MODULE_AUTHOR ("Carolyn Smith <carolyn.smith@...tronix.com>");
> -MODULE_DESCRIPTION ("MTD map driver for SBC8240 boards");
> -
>
> ---
> Regards--
> Subrata
>
--
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