mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 09:12:39 +00:00
111 lines
3.0 KiB
Diff
111 lines
3.0 KiB
Diff
--- a/drivers/mtd/devices/block2mtd.c
|
|
+++ b/drivers/mtd/devices/block2mtd.c
|
|
@@ -10,6 +10,7 @@
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/module.h>
|
|
+#include <linux/delay.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/bio.h>
|
|
@@ -210,13 +211,16 @@ static void block2mtd_free_device(struct
|
|
}
|
|
|
|
|
|
-static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname)
|
|
+static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname, int timeout)
|
|
{
|
|
const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
|
|
- struct block_device *bdev;
|
|
+ struct block_device *bdev = ERR_PTR(-ENODEV);
|
|
struct block2mtd_dev *dev;
|
|
struct mtd_partition *part;
|
|
char *name;
|
|
+#ifndef MODULE
|
|
+ int i;
|
|
+#endif
|
|
|
|
if (!devname)
|
|
return NULL;
|
|
@@ -227,15 +231,20 @@ static struct block2mtd_dev *add_device(
|
|
|
|
/* Get a handle on the device */
|
|
bdev = blkdev_get_by_path(devname, mode, dev);
|
|
+
|
|
#ifndef MODULE
|
|
- if (IS_ERR(bdev)) {
|
|
+ for (i = 0; IS_ERR(bdev) && i <= timeout; i++) {
|
|
+ dev_t devt;
|
|
|
|
- /* We might not have rootfs mounted at this point. Try
|
|
- to resolve the device name by other means. */
|
|
+ if (i)
|
|
+ msleep(1000);
|
|
+ wait_for_device_probe();
|
|
+
|
|
+ devt = name_to_dev_t(devname);
|
|
+ if (!devt)
|
|
+ continue;
|
|
|
|
- dev_t devt = name_to_dev_t(devname);
|
|
- if (devt)
|
|
- bdev = blkdev_get_by_dev(devt, mode, dev);
|
|
+ bdev = blkdev_get_by_dev(devt, mode, dev);
|
|
}
|
|
#endif
|
|
|
|
@@ -361,11 +370,12 @@ static char block2mtd_paramline[80 + 12]
|
|
|
|
static int block2mtd_setup2(const char *val)
|
|
{
|
|
- char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */
|
|
+ char buf[80 + 12 + 80 + 8]; /* 80 for device, 12 for erase size, 80 for name, 8 for timeout */
|
|
char *str = buf;
|
|
- char *token[3];
|
|
+ char *token[4];
|
|
char *name;
|
|
size_t erase_size = PAGE_SIZE;
|
|
+ unsigned long timeout = 0;
|
|
int i, ret;
|
|
|
|
if (strnlen(val, sizeof(buf)) >= sizeof(buf)) {
|
|
@@ -376,7 +386,7 @@ static int block2mtd_setup2(const char *
|
|
strcpy(str, val);
|
|
kill_final_newline(str);
|
|
|
|
- for (i = 0; i < 3; i++)
|
|
+ for (i = 0; i < 4; i++)
|
|
token[i] = strsep(&str, ",");
|
|
|
|
if (str) {
|
|
@@ -405,7 +415,10 @@ static int block2mtd_setup2(const char *
|
|
if (token[2] && (strlen(token[2]) + 1 > 80))
|
|
pr_err("mtd device name too long\n");
|
|
|
|
- add_device(name, erase_size, token[2]);
|
|
+ if (token[3] && kstrtoul(token[3], 0, &timeout))
|
|
+ pr_err("invalid timeout\n");
|
|
+
|
|
+ add_device(name, erase_size, token[2], timeout);
|
|
|
|
return 0;
|
|
}
|
|
@@ -439,7 +452,7 @@ static int block2mtd_setup(const char *v
|
|
|
|
|
|
module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
|
|
-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\"");
|
|
+MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>[,<timeout>]]]\"");
|
|
|
|
static int __init block2mtd_init(void)
|
|
{
|
|
@@ -474,7 +487,7 @@ static void block2mtd_exit(void)
|
|
}
|
|
|
|
|
|
-module_init(block2mtd_init);
|
|
+late_initcall(block2mtd_init);
|
|
module_exit(block2mtd_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|