mirror of https://gitee.com/openkylin/linux.git
UBI: remove data_offset
'data_offset' parameter does not really make sense and it is not needed. Get rid of it. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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@ -50,13 +50,11 @@
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* struct mtd_dev_param - MTD device parameter description data structure.
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* @name: MTD device name or number string
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* @vid_hdr_offs: VID header offset
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* @data_offs: data offset
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*/
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struct mtd_dev_param
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{
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char name[MTD_PARAM_LEN_MAX];
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int vid_hdr_offs;
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int data_offs;
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};
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/* Numbers of elements set in the @mtd_dev_param array */
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@ -512,7 +510,7 @@ static int io_init(struct ubi_device *ubi)
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return -EINVAL;
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}
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if (ubi->vid_hdr_offset < 0 || ubi->leb_start < ubi->vid_hdr_offset)
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if (ubi->vid_hdr_offset < 0)
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return -EINVAL;
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/*
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@ -562,10 +560,8 @@ static int io_init(struct ubi_device *ubi)
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}
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/* Similar for the data offset */
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if (ubi->leb_start == 0) {
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ubi->leb_start = ubi->vid_hdr_offset + ubi->vid_hdr_alsize;
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ubi->leb_start = ALIGN(ubi->leb_start, ubi->min_io_size);
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}
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ubi->leb_start = ubi->vid_hdr_offset + ubi->vid_hdr_alsize;
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ubi->leb_start = ALIGN(ubi->leb_start, ubi->min_io_size);
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dbg_msg("vid_hdr_offset %d", ubi->vid_hdr_offset);
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dbg_msg("vid_hdr_aloffset %d", ubi->vid_hdr_aloffset);
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@ -626,7 +622,6 @@ static int io_init(struct ubi_device *ubi)
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* ubi_attach_mtd_dev - attach an MTD device.
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* @mtd_dev: MTD device description object
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* @vid_hdr_offset: VID header offset
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* @data_offset: data offset
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*
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* This function attaches an MTD device to UBI. It first treats @mtd_dev as the
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* MTD device name, and tries to open it by this name. If it is unable to open,
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@ -637,8 +632,7 @@ static int io_init(struct ubi_device *ubi)
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* Note, the invocations of this function has to be serialized by the
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* @ubi_devices_mutex.
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*/
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int ubi_attach_mtd_dev(struct mtd_info *mtd, int vid_hdr_offset,
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int data_offset)
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int ubi_attach_mtd_dev(struct mtd_info *mtd, int vid_hdr_offset)
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{
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struct ubi_device *ubi;
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int i, err;
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@ -674,10 +668,9 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int vid_hdr_offset,
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ubi->mtd = mtd;
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ubi->ubi_num = i;
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ubi->vid_hdr_offset = vid_hdr_offset;
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ubi->leb_start = data_offset;
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dbg_msg("attaching mtd%d to ubi%d: VID header offset %d data offset %d",
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mtd->index, ubi->ubi_num, vid_hdr_offset, data_offset);
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dbg_msg("attaching mtd%d to ubi%d: VID header offset %d",
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mtd->index, ubi->ubi_num, vid_hdr_offset);
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err = io_init(ubi);
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if (err)
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@ -942,7 +935,7 @@ static int __init ubi_init(void)
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}
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mutex_lock(&ubi_devices_mutex);
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err = ubi_attach_mtd_dev(mtd, p->vid_hdr_offs, p->data_offs);
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err = ubi_attach_mtd_dev(mtd, p->vid_hdr_offs);
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mutex_unlock(&ubi_devices_mutex);
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if (err < 0) {
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put_mtd_device(mtd);
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@ -1094,13 +1087,9 @@ static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp)
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if (tokens[1])
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p->vid_hdr_offs = bytes_str_to_int(tokens[1]);
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if (tokens[2])
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p->data_offs = bytes_str_to_int(tokens[2]);
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if (p->vid_hdr_offs < 0)
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return p->vid_hdr_offs;
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if (p->data_offs < 0)
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return p->data_offs;
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mtd_devs += 1;
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return 0;
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@ -1108,16 +1097,15 @@ static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp)
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module_param_call(mtd, ubi_mtd_param_parse, NULL, NULL, 000);
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MODULE_PARM_DESC(mtd, "MTD devices to attach. Parameter format: "
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"mtd=<name|num>[,<vid_hdr_offs>,<data_offs>]. "
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"mtd=<name|num>[,<vid_hdr_offs>].\n"
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"Multiple \"mtd\" parameters may be specified.\n"
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"MTD devices may be specified by their number or name. "
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"Optional \"vid_hdr_offs\" and \"data_offs\" parameters "
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"specify UBI VID header position and data starting "
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"position to be used by UBI.\n"
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"Example: mtd=content,1984,2048 mtd=4 - attach MTD device"
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"with name content using VID header offset 1984 and data "
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"start 2048, and MTD device number 4 using default "
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"offsets");
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"MTD devices may be specified by their number or name.\n"
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"Optional \"vid_hdr_offs\" parameter specifies UBI VID "
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"header position and data starting position to be used "
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"by UBI.\n"
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"Example: mtd=content,1984 mtd=4 - attach MTD device"
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"with name \"content\" using VID header offset 1984, and "
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"MTD device number 4 with default VID header offset.");
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MODULE_VERSION(__stringify(UBI_VERSION));
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MODULE_DESCRIPTION("UBI - Unsorted Block Images");
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@ -483,8 +483,7 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum,
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struct ubi_vid_hdr *vid_hdr);
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/* build.c */
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int ubi_attach_mtd_dev(struct mtd_info *mtd, int vid_hdr_offset,
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int data_offset);
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int ubi_attach_mtd_dev(struct mtd_info *mtd, int vid_hdr_offset);
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int ubi_detach_mtd_dev(int ubi_num, int anyway);
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struct ubi_device *ubi_get_device(int ubi_num);
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void ubi_put_device(struct ubi_device *ubi);
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