369 	struct erase_info *erase;  in concat_erase()  local
372 	 * Check for proper erase block alignment of the to-be-erased area.  in concat_erase()
373 	 * It is easier to do this based on the super device's erase  in concat_erase()
378 		/* the easy case: device has uniform erase block size */  in concat_erase()
384 		/* device has variable erase size */  in concat_erase()
389 		 * Find the erase region where the to-be-erased area begins:  in concat_erase()
398 		 * offset is aligned to this region's erase size:  in concat_erase()
404 		 * now find the erase region where the to-be-erased area ends:  in concat_erase()
411 		 * check if the ending offset is aligned to this region's erase size  in concat_erase()
419 	erase = kmalloc(sizeof (struct erase_info), GFP_KERNEL);  in concat_erase()
421 	if (!erase)  in concat_erase()
424 	*erase = *instr;  in concat_erase()
433 		if (subdev->size <= erase->addr) {  in concat_erase()
434 			erase->addr -= subdev->size;  in concat_erase()
444 	/* now do the erase: */  in concat_erase()
451 		if (erase->addr + length > subdev->size)  in concat_erase()
452 			erase->len = subdev->size - erase->addr;  in concat_erase()
454 			erase->len = length;  in concat_erase()
456 		length -= erase->len;  in concat_erase()
457 		if ((err = mtd_erase(subdev, erase))) {  in concat_erase()
461 			if (erase->fail_addr != MTD_FAIL_ADDR_UNKNOWN)  in concat_erase()
462 				instr->fail_addr = erase->fail_addr + offset;  in concat_erase()
466 		 * erase->addr specifies the offset of the area to be  in concat_erase()
473 		erase->addr = 0;  in concat_erase()
476 	kfree(erase);  in concat_erase()
770 	 * Combine the erase block size info of the subdevices:  in mtd_concat_create()
773 	 * many changes in erase size we have  in mtd_concat_create()
779 			/* current subdevice has uniform erase size */  in mtd_concat_create()
781 				/* if it differs from the last subdevice's erase size, count it */  in mtd_concat_create()
788 			/* current subdevice has variable erase size */  in mtd_concat_create()
792 				/* walk the list of erase regions, count any changes */  in mtd_concat_create()
808 		 * All subdevices have the same uniform erase size.  in mtd_concat_create()
817 		 * erase block size varies across the subdevices: allocate  in mtd_concat_create()
818 		 * space to store the data describing the variable erase regions  in mtd_concat_create()
832 			    ("memory allocation error while creating erase region list"  in mtd_concat_create()
839 		 * erase region info:  in mtd_concat_create()
845 				/* current subdevice has uniform erase size */  in mtd_concat_create()
864 				/* current subdevice has variable erase size */  in mtd_concat_create()
867 					/* walk the list of erase regions, count any changes */  in mtd_concat_create()