diff options
4 files changed, 61 insertions, 28 deletions
diff --git a/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c b/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c index e6a6928896..bd0469d5e8 100644 --- a/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c +++ b/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c @@ -39,7 +39,7 @@ #include "routerboot.h" -#define RB_HARDCONFIG_VER "0.06" +#define RB_HARDCONFIG_VER "0.07" #define RB_HC_PR_PFX "[rb_hardconfig] " /* ID values for hardware settings */ @@ -676,10 +676,9 @@ static ssize_t hc_wlan_data_bin_read(struct file *filp, struct kobject *kobj, return count; } -int __init rb_hardconfig_init(struct kobject *rb_kobj) +int rb_hardconfig_init(struct kobject *rb_kobj, struct mtd_info *mtd) { struct kobject *hc_wlan_kobj; - struct mtd_info *mtd; size_t bytes_read, buflen, outlen; const u8 *buf; void *outbuf; @@ -690,20 +689,19 @@ int __init rb_hardconfig_init(struct kobject *rb_kobj) hc_kobj = NULL; hc_wlan_kobj = NULL; - // TODO allow override - mtd = get_mtd_device_nm(RB_MTD_HARD_CONFIG); - if (IS_ERR(mtd)) + ret = __get_mtd_device(mtd); + if (ret) return -ENODEV; hc_buflen = mtd->size; hc_buf = kmalloc(hc_buflen, GFP_KERNEL); if (!hc_buf) { - put_mtd_device(mtd); + __put_mtd_device(mtd); return -ENOMEM; } ret = mtd_read(mtd, 0, hc_buflen, &bytes_read, hc_buf); - put_mtd_device(mtd); + __put_mtd_device(mtd); if (ret) goto fail; @@ -818,8 +816,10 @@ fail: return ret; } -void __exit rb_hardconfig_exit(void) +void rb_hardconfig_exit(void) { kobject_put(hc_kobj); + hc_kobj = NULL; kfree(hc_buf); + hc_buf = NULL; } diff --git a/target/linux/generic/files/drivers/platform/mikrotik/rb_softconfig.c b/target/linux/generic/files/drivers/platform/mikrotik/rb_softconfig.c index 453e1347b2..5acff6aa91 100644 --- a/target/linux/generic/files/drivers/platform/mikrotik/rb_softconfig.c +++ b/target/linux/generic/files/drivers/platform/mikrotik/rb_softconfig.c @@ -56,7 +56,7 @@ #include "routerboot.h" -#define RB_SOFTCONFIG_VER "0.04" +#define RB_SOFTCONFIG_VER "0.05" #define RB_SC_PR_PFX "[rb_softconfig] " #define RB_SC_HAS_WRITE_SUPPORT true @@ -694,9 +694,8 @@ mtdfail: static struct kobj_attribute sc_kattrcommit = __ATTR(commit, RB_SC_RMODE|RB_SC_WMODE, sc_commit_show, sc_commit_store); -int __init rb_softconfig_init(struct kobject *rb_kobj) +int rb_softconfig_init(struct kobject *rb_kobj, struct mtd_info *mtd) { - struct mtd_info *mtd; size_t bytes_read, buflen; const u8 *buf; int i, ret; @@ -705,20 +704,19 @@ int __init rb_softconfig_init(struct kobject *rb_kobj) sc_buf = NULL; sc_kobj = NULL; - // TODO allow override - mtd = get_mtd_device_nm(RB_MTD_SOFT_CONFIG); - if (IS_ERR(mtd)) + ret = __get_mtd_device(mtd); + if (ret) return -ENODEV; sc_buflen = mtd->size; sc_buf = kmalloc(sc_buflen, GFP_KERNEL); if (!sc_buf) { - put_mtd_device(mtd); + __put_mtd_device(mtd); return -ENOMEM; } ret = mtd_read(mtd, 0, sc_buflen, &bytes_read, sc_buf); - put_mtd_device(mtd); + __put_mtd_device(mtd); if (ret) goto fail; @@ -788,8 +786,10 @@ fail: return ret; } -void __exit rb_softconfig_exit(void) +void rb_softconfig_exit(void) { kobject_put(sc_kobj); + sc_kobj = NULL; kfree(sc_buf); + sc_buf = NULL; } diff --git a/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c index 4c8c0bfac5..96f2460916 100644 --- a/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c +++ b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sysfs.h> +#include <linux/mtd/mtd.h> #include "routerboot.h" @@ -160,25 +161,57 @@ fail: return ret; } -static int __init routerboot_init(void) +static void routerboot_mtd_notifier_add(struct mtd_info *mtd) { - rb_kobj = kobject_create_and_add("mikrotik", firmware_kobj); - if (!rb_kobj) - return -ENOMEM; + /* Currently routerboot is only known to live on NOR flash */ + if (mtd->type != MTD_NORFLASH) + return; /* * We ignore the following return values and always register. * These init() routines are designed so that their failed state is * always manageable by the corresponding exit() calls. + * Notifier is called with MTD mutex held: use __get/__put variants. + * TODO: allow partition names override */ - rb_hardconfig_init(rb_kobj); - rb_softconfig_init(rb_kobj); + if (!strcmp(mtd->name, RB_MTD_HARD_CONFIG)) + rb_hardconfig_init(rb_kobj, mtd); + else if (!strcmp(mtd->name, RB_MTD_SOFT_CONFIG)) + rb_softconfig_init(rb_kobj, mtd); +} + +static void routerboot_mtd_notifier_remove(struct mtd_info *mtd) +{ + if (mtd->type != MTD_NORFLASH) + return; + + if (!strcmp(mtd->name, RB_MTD_HARD_CONFIG)) + rb_hardconfig_exit(); + else if (!strcmp(mtd->name, RB_MTD_SOFT_CONFIG)) + rb_softconfig_exit(); +} + +/* Note: using a notifier prevents qualifying init()/exit() functions with __init/__exit */ +static struct mtd_notifier routerboot_mtd_notifier = { + .add = routerboot_mtd_notifier_add, + .remove = routerboot_mtd_notifier_remove, +}; + +static int __init routerboot_init(void) +{ + rb_kobj = kobject_create_and_add("mikrotik", firmware_kobj); + if (!rb_kobj) + return -ENOMEM; + + register_mtd_user(&routerboot_mtd_notifier); return 0; } static void __exit routerboot_exit(void) { + unregister_mtd_user(&routerboot_mtd_notifier); + /* Exit routines are idempotent */ rb_softconfig_exit(); rb_hardconfig_exit(); kobject_put(rb_kobj); // recursive afaict diff --git a/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h index 67d89808d5..e858a524af 100644 --- a/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h +++ b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h @@ -25,11 +25,11 @@ int routerboot_tag_find(const u8 *bufhead, const size_t buflen, const u16 tag_id, u16 *pld_ofs, u16 *pld_len); int routerboot_rle_decode(const u8 *in, size_t inlen, u8 *out, size_t *outlen); -int __init rb_hardconfig_init(struct kobject *rb_kobj); -void __exit rb_hardconfig_exit(void); +int rb_hardconfig_init(struct kobject *rb_kobj, struct mtd_info *mtd); +void rb_hardconfig_exit(void); -int __init rb_softconfig_init(struct kobject *rb_kobj); -void __exit rb_softconfig_exit(void); +int rb_softconfig_init(struct kobject *rb_kobj, struct mtd_info *mtd); +void rb_softconfig_exit(void); ssize_t routerboot_tag_show_string(const u8 *pld, u16 pld_len, char *buf); ssize_t routerboot_tag_show_u32s(const u8 *pld, u16 pld_len, char *buf); |