mtd: nand: mxs_nand_spl: don't read useless pages

The patch prevents pages beyond the last from being unnecessarily read.
This occurs when the last page to be read is not the last page of the
last block. Before this change we would have read all the pages up to
the end of the last block.

Suggested-by: Michael Trimarchi <michael@amarulasolutions.com>
Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Acked-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/all/20221120095705.3019295-1-dario.binacchi@amarulasolutions.com

diff --git a/drivers/mtd/nand/raw/mxs_nand_spl.c b/drivers/mtd/nand/raw/mxs_nand_spl.c
index ef03b77..3006629 100644 (file)
--- a/drivers/mtd/nand/raw/mxs_nand_spl.c
+++ b/drivers/mtd/nand/raw/mxs_nand_spl.c
@@ -257,7 +257,7 @@ int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst)
        while (block <= lastblock && size > 0) {
                if (!is_badblock(mtd, mtd->erasesize * block, 1)) {
                        /* Skip bad blocks */
-                       while (page < nand_page_per_block) {
+                       while (page < nand_page_per_block && size) {
                                int curr_page = nand_page_per_block * block + page;
 
                                if (mxs_read_page_ecc(mtd, page_buf, curr_page) < 0) {