Merging upstream version 6.7.12.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 66 insertions, 35 deletions

diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c
index 488fd45261..677fcb03f9 100644
--- a/drivers/mtd/nand/raw/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c
@@ -303,8 +303,9 @@ static int lpc32xx_nand_device_ready(struct nand_chip *nand_chip)
 	return 0;
 }
 
-static irqreturn_t lpc3xxx_nand_irq(int irq, struct lpc32xx_nand_host *host)
+static irqreturn_t lpc3xxx_nand_irq(int irq, void *data)
 {
+	struct lpc32xx_nand_host *host = data;
 	uint8_t sr;
 
 	/* Clear interrupt flag by reading status */
@@ -780,7 +781,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 		goto release_dma_chan;
 	}
 
-	if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq,
+	if (request_irq(host->irq, &lpc3xxx_nand_irq,
 			IRQF_TRIGGER_HIGH, DRV_NAME, host)) {
 		dev_err(&pdev->dev, "Error requesting NAND IRQ\n");
 		res = -ENXIO;
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 71ec4052e5..b3a881cbcd 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -63,7 +63,7 @@
 #define CMDRWGEN(cmd_dir, ran, bch, short_mode, page_size, pages)	\
 	(								\
 		(cmd_dir)			|			\
-		((ran) << 19)			|			\
+		(ran)				|			\
 		((bch) << 14)			|			\
 		((short_mode) << 13)		|			\
 		(((page_size) & 0x7f) << 6)	|			\
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index bbdcfbe643..ccbd42a427 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -1207,21 +1207,36 @@ static int nand_lp_exec_read_page_op(struct nand_chip *chip, unsigned int page,
 	return nand_exec_op(chip, &op);
 }
 
+static unsigned int rawnand_last_page_of_lun(unsigned int pages_per_lun, unsigned int lun)
+{
+	/* lun is expected to be very small */
+	return (lun * pages_per_lun) + pages_per_lun - 1;
+}
+
 static void rawnand_cap_cont_reads(struct nand_chip *chip)
 {
 	struct nand_memory_organization *memorg;
-	unsigned int pages_per_lun, first_lun, last_lun;
+	unsigned int ppl, first_lun, last_lun;
 
 	memorg = nanddev_get_memorg(&chip->base);
-	pages_per_lun = memorg->pages_per_eraseblock * memorg->eraseblocks_per_lun;
-	first_lun = chip->cont_read.first_page / pages_per_lun;
-	last_lun = chip->cont_read.last_page / pages_per_lun;
+	ppl = memorg->pages_per_eraseblock * memorg->eraseblocks_per_lun;
+	first_lun = chip->cont_read.first_page / ppl;
+	last_lun = chip->cont_read.last_page / ppl;
 
 	/* Prevent sequential cache reads across LUN boundaries */
 	if (first_lun != last_lun)
-		chip->cont_read.pause_page = first_lun * pages_per_lun + pages_per_lun - 1;
+		chip->cont_read.pause_page = rawnand_last_page_of_lun(ppl, first_lun);
 	else
 		chip->cont_read.pause_page = chip->cont_read.last_page;
+
+	if (chip->cont_read.first_page == chip->cont_read.pause_page) {
+		chip->cont_read.first_page++;
+		chip->cont_read.pause_page = min(chip->cont_read.last_page,
+						 rawnand_last_page_of_lun(ppl, first_lun + 1));
+	}
+
+	if (chip->cont_read.first_page >= chip->cont_read.last_page)
+		chip->cont_read.ongoing = false;
 }
 
 static int nand_lp_exec_cont_read_page_op(struct nand_chip *chip, unsigned int page,
@@ -1288,12 +1303,11 @@ static int nand_lp_exec_cont_read_page_op(struct nand_chip *chip, unsigned int p
 	if (!chip->cont_read.ongoing)
 		return 0;
 
-	if (page == chip->cont_read.pause_page &&
-	    page != chip->cont_read.last_page) {
-		chip->cont_read.first_page = chip->cont_read.pause_page + 1;
-		rawnand_cap_cont_reads(chip);
-	} else if (page == chip->cont_read.last_page) {
+	if (page == chip->cont_read.last_page) {
 		chip->cont_read.ongoing = false;
+	} else if (page == chip->cont_read.pause_page) {
+		chip->cont_read.first_page++;
+		rawnand_cap_cont_reads(chip);
 	}
 
 	return 0;
@@ -3460,30 +3474,36 @@ static void rawnand_enable_cont_reads(struct nand_chip *chip, unsigned int page,
 				      u32 readlen, int col)
 {
 	struct mtd_info *mtd = nand_to_mtd(chip);
-	unsigned int end_page, end_col;
+	unsigned int first_page, last_page;
 
 	chip->cont_read.ongoing = false;
 
 	if (!chip->controller->supported_op.cont_read)
 		return;
 
-	end_page = DIV_ROUND_UP(col + readlen, mtd->writesize);
-	end_col = (col + readlen) % mtd->writesize;
+	/*
+	 * Don't bother making any calculations if the length is too small.
+	 * Side effect: avoids possible integer underflows below.
+	 */
+	if (readlen < (2 * mtd->writesize))
+		return;
 
+	/* Derive the page where continuous read should start (the first full page read) */
+	first_page = page;
 	if (col)
-		page++;
+		first_page++;
 
-	if (end_col && end_page)
-		end_page--;
+	/* Derive the page where continuous read should stop (the last full page read) */
+	last_page = page + ((col + readlen) / mtd->writesize) - 1;
 
-	if (page + 1 > end_page)
-		return;
-
-	chip->cont_read.first_page = page;
-	chip->cont_read.last_page = end_page;
-	chip->cont_read.ongoing = true;
-
-	rawnand_cap_cont_reads(chip);
+	/* Configure and enable continuous read when suitable */
+	if (first_page < last_page) {
+		chip->cont_read.first_page = first_page;
+		chip->cont_read.last_page = last_page;
+		chip->cont_read.ongoing = true;
+		/* May reset the ongoing flag */
+		rawnand_cap_cont_reads(chip);
+	}
 }
 
 static void rawnand_cont_read_skip_first_page(struct nand_chip *chip, unsigned int page)
@@ -3492,10 +3512,7 @@ static void rawnand_cont_read_skip_first_page(struct nand_chip *chip, unsigned i
 		return;
 
 	chip->cont_read.first_page++;
-	if (chip->cont_read.first_page == chip->cont_read.pause_page)
-		chip->cont_read.first_page++;
-	if (chip->cont_read.first_page >= chip->cont_read.last_page)
-		chip->cont_read.ongoing = false;
+	rawnand_cap_cont_reads(chip);
 }
 
 /**
@@ -3571,7 +3588,8 @@ static int nand_do_read_ops(struct nand_chip *chip, loff_t from,
 	oob = ops->oobbuf;
 	oob_required = oob ? 1 : 0;
 
-	rawnand_enable_cont_reads(chip, page, readlen, col);
+	if (likely(ops->mode != MTD_OPS_RAW))
+		rawnand_enable_cont_reads(chip, page, readlen, col);
 
 	while (1) {
 		struct mtd_ecc_stats ecc_stats = mtd->ecc_stats;
@@ -5189,6 +5207,15 @@ static void rawnand_late_check_supported_ops(struct nand_chip *chip)
 	if (!nand_has_exec_op(chip))
 		return;
 
+	/*
+	 * For now, continuous reads can only be used with the core page helpers.
+	 * This can be extended later.
+	 */
+	if (!(chip->ecc.read_page == nand_read_page_hwecc ||
+	      chip->ecc.read_page == nand_read_page_syndrome ||
+	      chip->ecc.read_page == nand_read_page_swecc))
+		return;
+
 	rawnand_check_cont_read_support(chip);
 }
 
diff --git a/drivers/mtd/nand/spi/esmt.c b/drivers/mtd/nand/spi/esmt.c
index 31c439a557..4597a82de2 100644
--- a/drivers/mtd/nand/spi/esmt.c
+++ b/drivers/mtd/nand/spi/esmt.c
@@ -104,7 +104,8 @@ static const struct mtd_ooblayout_ops f50l1g41lb_ooblayout = {
 
 static const struct spinand_info esmt_c8_spinand_table[] = {
 	SPINAND_INFO("F50L1G41LB",
-		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01),
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01, 0x7f,
+				0x7f, 0x7f),
 		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
 		     NAND_ECCREQ(1, 512),
 		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
@@ -113,7 +114,8 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
 		     0,
 		     SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
 	SPINAND_INFO("F50D1G41LB",
-		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11),
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11, 0x7f,
+				0x7f, 0x7f),
 		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
 		     NAND_ECCREQ(1, 512),
 		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
@@ -122,7 +124,8 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
 		     0,
 		     SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
 	SPINAND_INFO("F50D2G41KA",
-		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51),
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51, 0x7f,
+				0x7f, 0x7f),
 		     NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
 		     NAND_ECCREQ(8, 512),
 		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,