drivers/mtd/mtdoops.c

22 #include <linux/mtd/mtd.h>
58 	struct mtd_info *mtd;
85 	struct mtd_info *mtd = cxt->mtd;
86 	u32 start_page_offset = mtd_div_by_eb(offset, mtd) * mtd->erasesize;
88 	u32 erase_pages = mtd->erasesize / record_size;
94 	erase.len = mtd->erasesize;
96 	ret = mtd_erase(mtd, &erase);
113 	struct mtd_info *mtd = cxt->mtd;
117 	if (!mtd)
120 	mod = (cxt->nextpage * record_size) % mtd->erasesize;
122 		cxt->nextpage = cxt->nextpage + ((mtd->erasesize - mod) / record_size);
127 	while ((ret = mtd_block_isbad(mtd, cxt->nextpage * record_size)) > 0) {
132 		cxt->nextpage = cxt->nextpage + (mtd->erasesize / record_size);
135 		if (i == cxt->oops_pages / (mtd->erasesize / record_size)) {
156 		ret = mtd_block_markbad(mtd, cxt->nextpage * record_size);
201 	struct mtd_info *mtd = cxt->mtd;
216 		ret = mtd_panic_write(mtd, cxt->nextpage * record_size,
223 		ret = mtd_write(mtd, cxt->nextpage * record_size,
247 	struct mtd_info *mtd = cxt->mtd;
254 		if (mtd_block_isbad(mtd, page * record_size))
258 		ret = mtd_read(mtd, page * record_size, sizeof(hdr),
329 static void mtdoops_notify_add(struct mtd_info *mtd)
332 	u64 mtdoops_pages = div_u64(mtd->size, record_size);
335 	if (!strcmp(mtd->name, mtddev))
336 		cxt->mtd_index = mtd->index;
338 	if (mtd->index != cxt->mtd_index || cxt->mtd_index < 0)
341 	if (mtd->size < mtd->erasesize * 2) {
343 		       mtd->index);
346 	if (mtd->erasesize < record_size) {
348 		       mtd->index);
351 	if (mtd->size > MTDOOPS_MAX_MTD_SIZE) {
352 		pr_err("mtd%d is too large (limit is %d MiB)\n",
353 		       mtd->index, MTDOOPS_MAX_MTD_SIZE / 1024 / 1024);
377 	cxt->mtd = mtd;
378 	cxt->oops_pages = (int)mtd->size / record_size;
380 	pr_info("Attached to MTD device %d\n", mtd->index);
383 static void mtdoops_notify_remove(struct mtd_info *mtd)
387 	if (mtd->index != cxt->mtd_index || cxt->mtd_index < 0)
393 	cxt->mtd = NULL;
411 		pr_err("mtd device (mtddev=name/number) must be supplied\n");