From: Jagdish Gediya Date: Tue, 1 May 2018 19:50:57 +0000 (+0530) Subject: mtd: nand: fsl_ifc: Fix nand waitfunc return value X-Git-Tag: v2018.07-rc1~160^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e8c669a3e6ec9b33aea55e957024f97300b99c1c;p=platform%2Fkernel%2Fu-boot.git mtd: nand: fsl_ifc: Fix nand waitfunc return value As per the IFC hardware manual, Most significant byte in nand_fsr register is the outcome of NAND READ STATUS command. So status value need to be shifted as per the nand framework requirement. Signed-off-by: Jagdish Gediya Reviewed-by: Prabhakar Kushwaha Reviewed-by: York Sun --- diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c index 3cb4875..a47226b 100644 --- a/drivers/mtd/nand/fsl_ifc_nand.c +++ b/drivers/mtd/nand/fsl_ifc_nand.c @@ -700,6 +700,7 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip) struct fsl_ifc_ctrl *ctrl = priv->ctrl; struct fsl_ifc_runtime *ifc = ctrl->regs.rregs; u32 nand_fsr; + int status; if (ctrl->status != IFC_NAND_EVTER_STAT_OPC) return NAND_STATUS_FAIL; @@ -720,10 +721,10 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip) return NAND_STATUS_FAIL; nand_fsr = ifc_in32(&ifc->ifc_nand.nand_fsr); + status = nand_fsr >> 24; /* Chip sometimes reporting write protect even when it's not */ - nand_fsr = nand_fsr | NAND_STATUS_WP; - return nand_fsr; + return status | NAND_STATUS_WP; } static int fsl_ifc_read_page(struct mtd_info *mtd, struct nand_chip *chip,