linux-kernel - [PATCH] mtd: rawnand: stm32_fmc2: increase DMA completion timeouts

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Message-ID: <1561128480-14531-1-git-send-email-christophe.kerello@st.com>
Date:   Fri, 21 Jun 2019 16:48:00 +0200
From:   Christophe Kerello <christophe.kerello@...com>
To:     <miquel.raynal@...tlin.com>, <richard@....at>,
        <dwmw2@...radead.org>, <computersforpeace@...il.com>,
        <marek.vasut@...il.com>, <vigneshr@...com>
CC:     <bbrezillon@...nel.org>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Christophe Kerello <christophe.kerello@...com>,
        Amelie Delaunay <amelie.delaunay@...com>
Subject: [PATCH] mtd: rawnand: stm32_fmc2: increase DMA completion timeouts

When the system is overloaded, DMA data transfer completion occurs after
100ms. Increase the timeouts to let it the time to complete.

Signed-off-by: Amelie Delaunay <amelie.delaunay@...com>
Signed-off-by: Christophe Kerello <christophe.kerello@...com>
---
 drivers/mtd/nand/raw/stm32_fmc2_nand.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 4aabea2..c7f7c6f 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -981,7 +981,7 @@ static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
 
 	/* Wait DMA data transfer completion */
 	if (!wait_for_completion_timeout(&fmc2->dma_data_complete,
-					 msecs_to_jiffies(100))) {
+					 msecs_to_jiffies(500))) {
 		dev_err(fmc2->dev, "data DMA timeout\n");
 		dmaengine_terminate_all(dma_ch);
 		ret = -ETIMEDOUT;
@@ -990,7 +990,7 @@ static int stm32_fmc2_xfer(struct nand_chip *chip, const u8 *buf,
 	/* Wait DMA ECC transfer completion */
 	if (!write_data && !raw) {
 		if (!wait_for_completion_timeout(&fmc2->dma_ecc_complete,
-						 msecs_to_jiffies(100))) {
+						 msecs_to_jiffies(500))) {
 			dev_err(fmc2->dev, "ECC DMA timeout\n");
 			dmaengine_terminate_all(fmc2->dma_ecc_ch);
 			ret = -ETIMEDOUT;
-- 
1.9.1