[PATCH v2 2/4] mtd: nand: pxa3xx: Clean pxa_ecc_init() error handling
From: Ezequiel Garcia <hidden>
Date: 2014-03-21 11:34:48
Subsystem:
memory technology devices (mtd), nand flash subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Linus Torvalds
Let's make pxa_ecc_init() return a negative errno on error or zero if succesful, which is standard kernel practice. Also, report the selected ECC strength and step size, which is important information. Signed-off-by: Ezequiel Garcia <ezequiel.garcia-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> --- drivers/mtd/nand/pxa3xx_nand.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 92b3439..cf7d757 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c@@ -1353,7 +1353,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, ecc->mode = NAND_ECC_HW; ecc->size = 512; ecc->strength = 1; - return 1; } else if (strength == 1 && page_size == 512) { info->chunk_size = 512;
@@ -1362,7 +1361,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, ecc->mode = NAND_ECC_HW; ecc->size = 512; ecc->strength = 1; - return 1; /* * Required ECC: 4-bit correction per 512 bytes
@@ -1388,7 +1386,6 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, ecc->size = info->chunk_size; ecc->layout = &ecc_layout_4KB_bch4bit; ecc->strength = 16; - return 1; /* * Required ECC: 8-bit correction per 512 bytes
@@ -1403,8 +1400,15 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, ecc->size = info->chunk_size; ecc->layout = &ecc_layout_4KB_bch8bit; ecc->strength = 16; - return 1; + } else { + dev_err(&info->pdev->dev, + "ECC strength %d at page size %d is not supported\n", + strength, page_size); + return -ENODEV; } + + dev_info(&info->pdev->dev, "ECC strength %d, ECC step size %d\n", + ecc->strength, ecc->size); return 0; }
@@ -1526,12 +1530,8 @@ KEEP_CONFIG: ret = pxa_ecc_init(info, &chip->ecc, (ecc_strength * 512) / ecc_step, mtd->writesize); - if (!ret) { - dev_err(&info->pdev->dev, - "ECC strength %d at page size %d is not supported\n", - ecc_strength, mtd->writesize); - return -ENODEV; - } + if (ret) + return ret; /* calculate addressing information */ if (mtd->writesize >= 2048)
--
1.9.0
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