From 025ce02d92b67d6c702676c11f7f1f5e8f0a81fa Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Sun, 27 Mar 2016 12:13:54 -0400 Subject: mtd: maps: make uclinux.c driver more explicitly non-modular The Kconfig for this support is currently declared with: config MTD_UCLINUX bool "Generic uClinux RAM/ROM filesystem support" ...meaning that it currently is not being built as a module by anyone. Lets remove as much of the modular evidence that we can, so that when reading the driver there is less doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. We also replace module.h with moduleparam.h since the file does use a module_param, and leaving it as such is currently the easiest way to remain compatible with existing boot arg use cases. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: David Woodhouse Cc: Greg Ungerer Signed-off-by: Paul Gortmaker Signed-off-by: Brian Norris --- drivers/mtd/maps/uclinux.c | 27 ++++----------------------- 1 file changed, 4 insertions(+), 23 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c index c1af83db5202..00a8190797ec 100644 --- a/drivers/mtd/maps/uclinux.c +++ b/drivers/mtd/maps/uclinux.c @@ -4,11 +4,13 @@ * uclinux.c -- generic memory mapped MTD driver for uclinux * * (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com) + * + * License: GPL */ /****************************************************************************/ -#include +#include #include #include #include @@ -117,27 +119,6 @@ static int __init uclinux_mtd_init(void) return(0); } - -/****************************************************************************/ - -static void __exit uclinux_mtd_cleanup(void) -{ - if (uclinux_ram_mtdinfo) { - mtd_device_unregister(uclinux_ram_mtdinfo); - map_destroy(uclinux_ram_mtdinfo); - uclinux_ram_mtdinfo = NULL; - } - if (uclinux_ram_map.virt) - uclinux_ram_map.virt = 0; -} - -/****************************************************************************/ - -module_init(uclinux_mtd_init); -module_exit(uclinux_mtd_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Greg Ungerer "); -MODULE_DESCRIPTION("Generic MTD for uClinux"); +device_initcall(uclinux_mtd_init); /****************************************************************************/ -- cgit v1.2.3 From e4106a7c8236eb7b91686d36f3bf33ee43db94b4 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 19 Apr 2016 14:33:33 +0200 Subject: mtd: maps: add __init attribute Add __init attribute on functions that are only called from other __init functions and that are not inlined, at least with gcc version 4.8.4 on an x86 machine with allyesconfig. Currently, the functions are put in the .text.unlikely segment. Declaring them as __init will cause them to be put in the .init.text and to disappear after initialization. The result of objdump -x on the functions before the change is as follows: 00000000000001bc l F .text.unlikely 00000000000006a2 ck804xrom_init_one.isra.1 00000000000001aa l F .text.unlikely 0000000000000764 esb2rom_init_one.isra.1 00000000000001db l F .text.unlikely 0000000000000716 ichxrom_init_one.isra.1 And after the change it is as follows: 0000000000000000 l F .init.text 000000000000069d ck804xrom_init_one.isra.1 0000000000000000 l F .init.text 000000000000075f esb2rom_init_one.isra.1 0000000000000000 l F .init.text 0000000000000711 ichxrom_init_one.isra.1 Done with the help of Coccinelle. The semantic patch checks for local static non-init functions that are called from an __init function and are not called from any other function. Note that in each case, the function is stored in the probe field of a pci_driver structure, but this code is under an #if 0. The #if 0s have been unchanged since 2009 at the latest. Signed-off-by: Julia Lawall Signed-off-by: Brian Norris --- drivers/mtd/maps/ck804xrom.c | 4 ++-- drivers/mtd/maps/esb2rom.c | 4 ++-- drivers/mtd/maps/ichxrom.c | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c index 0455166f05fa..4f206a99164c 100644 --- a/drivers/mtd/maps/ck804xrom.c +++ b/drivers/mtd/maps/ck804xrom.c @@ -112,8 +112,8 @@ static void ck804xrom_cleanup(struct ck804xrom_window *window) } -static int ck804xrom_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) +static int __init ck804xrom_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) { static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; u8 byte; diff --git a/drivers/mtd/maps/esb2rom.c b/drivers/mtd/maps/esb2rom.c index 76ed651b515b..9646b0766ce0 100644 --- a/drivers/mtd/maps/esb2rom.c +++ b/drivers/mtd/maps/esb2rom.c @@ -144,8 +144,8 @@ static void esb2rom_cleanup(struct esb2rom_window *window) pci_dev_put(window->pdev); } -static int esb2rom_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) +static int __init esb2rom_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) { static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; struct esb2rom_window *window = &esb2rom_window; diff --git a/drivers/mtd/maps/ichxrom.c b/drivers/mtd/maps/ichxrom.c index 8636bba42200..e17d02ae03f0 100644 --- a/drivers/mtd/maps/ichxrom.c +++ b/drivers/mtd/maps/ichxrom.c @@ -84,8 +84,8 @@ static void ichxrom_cleanup(struct ichxrom_window *window) } -static int ichxrom_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) +static int __init ichxrom_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) { static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; struct ichxrom_window *window = &ichxrom_window; -- cgit v1.2.3