mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
100 lines
2.7 KiB
Diff
100 lines
2.7 KiB
Diff
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
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+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
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@@ -28,10 +28,18 @@
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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+#include <linux/notifier.h>
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+#include <linux/reboot.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/cfi.h>
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#include <linux/mtd/compatmac.h>
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+#ifndef container_of
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+#define container_of(ptr, type, member) ({ \
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+ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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+ (type *)( (char *)__mptr - offsetof(type,member) );})
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+#endif
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+
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// debugging, turns off buffer write mode #define FORCE_WORD_WRITE
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static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
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@@ -45,6 +53,7 @@ static int cfi_intelext_lock(struct mtd_
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static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
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static int cfi_intelext_suspend (struct mtd_info *);
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static void cfi_intelext_resume (struct mtd_info *);
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+static int cfi_intelext_reboot(struct notifier_block *nb, unsigned long val, void *v);
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static void cfi_intelext_destroy(struct mtd_info *);
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@@ -288,6 +297,9 @@ static struct mtd_info *cfi_intelext_set
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map->fldrv = &cfi_intelext_chipdrv;
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MOD_INC_USE_COUNT;
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mtd->name = map->name;
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+ mtd->reboot_notifier.notifier_call = cfi_intelext_reboot;
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+ register_reboot_notifier(&mtd->reboot_notifier);
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+
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return mtd;
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setup_err:
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@@ -1961,10 +1973,40 @@ static void cfi_intelext_resume(struct m
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}
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}
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+
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+static void cfi_intelext_reset(struct mtd_info *mtd)
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+{
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+ struct map_info *map = mtd->priv;
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+ struct cfi_private *cfi = map->fldrv_priv;
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+ int i;
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+ struct flchip *chip;
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+
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+ cfi_intelext_sync(mtd);
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+ for (i=0; i<cfi->numchips; i++) {
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+ chip = &cfi->chips[i];
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+
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+ spin_lock(chip->mutex);
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+ cfi_write(map, CMD(0xFF), 0);
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+ chip->state = FL_READY;
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+ spin_unlock(chip->mutex);
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+ }
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+}
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+
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+static int cfi_intelext_reboot(struct notifier_block *nb, unsigned long val, void *v)
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+{
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+ struct mtd_info *mtd;
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+
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+ mtd = container_of(nb, struct mtd_info, reboot_notifier);
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+ cfi_intelext_reset(mtd);
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+ return NOTIFY_DONE;
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+}
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+
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static void cfi_intelext_destroy(struct mtd_info *mtd)
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{
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struct map_info *map = mtd->priv;
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struct cfi_private *cfi = map->fldrv_priv;
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+ cfi_intelext_reset(mtd);
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+ unregister_reboot_notifier(&mtd->reboot_notifier);
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kfree(cfi->cmdset_priv);
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kfree(cfi->cfiq);
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kfree(cfi);
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--- a/include/linux/mtd/mtd.h
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+++ b/include/linux/mtd/mtd.h
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@@ -10,6 +10,7 @@
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#include <linux/version.h>
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#include <linux/types.h>
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#include <linux/mtd/compatmac.h>
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+#include <linux/notifier.h>
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#include <linux/module.h>
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#include <linux/uio.h>
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@@ -217,6 +218,8 @@ struct mtd_info {
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int (*suspend) (struct mtd_info *mtd);
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void (*resume) (struct mtd_info *mtd);
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+ struct notifier_block reboot_notifier;
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+
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void *priv;
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};
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