Merge tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd

Pull MTD updates from Brian Norris:
 - Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
   David's "ack" for this; I'm sure he approves, but he's been pretty silent
   lately)
 - Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
 - Last (?) round of pxa3xx improvements for supporting Armada 370/XP
 - Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
 - Quad read mode support for SPI NOR driver (m25p80)
 - Update Davinci NAND driver to prepare for use on new platforms
 - Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
 - Miscellaneous NAND device support (new IDs)
 - Add READ RETRY support for Micron MLC NAND
 - Support new GPMI NAND ECC layout device-tree binding
 - Avoid mapping stack/vmalloc() memory for GPMI NAND DMA

* tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd: (151 commits)
  mtd: gpmi: add sanity check when mapping DMA for read_buf/write_buf
  mtd: gpmi: allocate a proper buffer for non ECC read/write
  mtd: m25p80: Set rx_nbits for Quad SPI transfers
  mtd: m25p80: Enable Quad SPI read transfers for s25fl512s
  mtd: s3c2410: Merge plat/regs-nand.h into s3c2410.c
  mtd: mtdram: add missing 'const'
  mtd: m25p80: assign default read command
  mtd: nuc900_nand: remove redundant return value check of platform_get_resource()
  mtd: plat_nand: remove redundant return value check of platform_get_resource()
  mtd: nand: add Intel manufacturer ID
  mtd: nand: add SanDisk manufacturer ID
  mtd: nand: add support for Samsung K9LCG08U0B
  mtd: nand: pxa3xx: Add support for 2048 bytes page size devices
  mtd: m25p80: Use OPCODE_QUAD_READ_4B for 4-byte addressing
  mtd: nand: don't use {read,write}_buf for 8-bit transfers
  mtd: nand: use __packed shorthand
  mtd: nand: support Micron READ RETRY
  mtd: nand: add generic READ RETRY support
  mtd: nand: add ONFI vendor block for Micron
  mtd: nand: localize ECC failures per page
  ...

1 files changed, 20 insertions, 5 deletions

diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 9dfdb06..e9a4835 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -677,7 +677,6 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat,
 		ecc_stat >>= 4;
 	} while (--no_subpages);
 
-	mtd->ecc_stats.corrected += ret;
 	pr_debug("%d Symbol Correctable RS-ECC Error\n", ret);
 
 	return ret;
@@ -1400,12 +1399,15 @@ static int mxcnd_probe(struct platform_device *pdev)
 	int err = 0;
 
 	/* Allocate memory for MTD device structure and private data */
-	host = devm_kzalloc(&pdev->dev, sizeof(struct mxc_nand_host) +
-			NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE, GFP_KERNEL);
+	host = devm_kzalloc(&pdev->dev, sizeof(struct mxc_nand_host),
+			GFP_KERNEL);
 	if (!host)
 		return -ENOMEM;
 
-	host->data_buf = (uint8_t *)(host + 1);
+	/* allocate a temporary buffer for the nand_scan_ident() */
+	host->data_buf = devm_kzalloc(&pdev->dev, PAGE_SIZE, GFP_KERNEL);
+	if (!host->data_buf)
+		return -ENOMEM;
 
 	host->dev = &pdev->dev;
 	/* structures must be linked */
@@ -1512,7 +1514,9 @@ static int mxcnd_probe(struct platform_device *pdev)
 	if (err)
 		return err;
 
-	clk_prepare_enable(host->clk);
+	err = clk_prepare_enable(host->clk);
+	if (err)
+		return err;
 	host->clk_act = 1;
 
 	/*
@@ -1531,6 +1535,15 @@ static int mxcnd_probe(struct platform_device *pdev)
 		goto escan;
 	}
 
+	/* allocate the right size buffer now */
+	devm_kfree(&pdev->dev, (void *)host->data_buf);
+	host->data_buf = devm_kzalloc(&pdev->dev, mtd->writesize + mtd->oobsize,
+					GFP_KERNEL);
+	if (!host->data_buf) {
+		err = -ENOMEM;
+		goto escan;
+	}
+
 	/* Call preset again, with correct writesize this time */
 	host->devtype_data->preset(mtd);
 
@@ -1576,6 +1589,8 @@ static int mxcnd_remove(struct platform_device *pdev)
 	struct mxc_nand_host *host = platform_get_drvdata(pdev);
 
 	nand_release(&host->mtd);
+	if (host->clk_act)
+		clk_disable_unprepare(host->clk);
 
 	return 0;
 }