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
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