linux-kernel - [PATCH 5.5 157/257] mtd: rawnand: cadence: reinit completion before executing a new command

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Message-Id: <20200416131346.195994557@linuxfoundation.org>
Date:   Thu, 16 Apr 2020 15:23:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Piotr Sroka <piotrs@...ence.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH 5.5 157/257] mtd: rawnand: cadence: reinit completion before executing a new command

From: Piotr Sroka <piotrs@...ence.com>

commit 0d7d6c8183aadb1dcc13f415941404a7913b46b3 upstream.

Reing the completion object before executing CDMA command to make sure
the 'done' flag is OK.

Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem")
Cc: stable@...r.kernel.org
Signed-off-by: Piotr Sroka <piotrs@...ence.com>
Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
Link: https://lore.kernel.org/linux-mtd/1581328530-29966-4-git-send-email-piotrs@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mtd/nand/raw/cadence-nand-controller.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/mtd/nand/raw/cadence-nand-controller.c
+++ b/drivers/mtd/nand/raw/cadence-nand-controller.c
@@ -997,6 +997,7 @@ static int cadence_nand_cdma_send(struct
 		return status;
 
 	cadence_nand_reset_irq(cdns_ctrl);
+	reinit_completion(&cdns_ctrl->complete);
 
 	writel_relaxed((u32)cdns_ctrl->dma_cdma_desc,
 		       cdns_ctrl->reg + CMD_REG2);