Hello,
sorry I am completely new to these kind of mailing lists, and quite probably I violate most of the rules for using this mailing list, but I have a serious bug to report and actually no time at all...
/u-boot_2019/drivers/mtd/nand/raw/omap_gpmc.c - function omap_nand_read_prefetch():
Whenever buf % 4 is neither 0 or 2 (i.e. 1 or 3), too few or too many bytes, respectively, are read before the calls to __read_prefetch_align.
Suggested fix:
original:
/* * If the destination buffer is unaligned, start with reading * the overlap byte-wise. */ head = ((uint32_t) buf) % 4; if (head) { omap_nand_read(mtd, buf, head); buf += head; len -= head; }
fixed:
/* * If the destination buffer is unaligned, start with reading * the overlap byte-wise. */ head = ((uint32_t) buf) % 4; if (head) {
head = 4 - head; // randomly equal to head if head == 2 ;-) omap_nand_read(mtd, buf, head); buf += head; len -= head; }
Best regards
Peter Reitinger