linux-kernel - [PATCH 4.2 176/258] mtd: pxa3xx_nand: add a default chunk size

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Message-Id: <20151018014738.409235198@linuxfoundation.org>
Date:	Sat, 17 Oct 2015 18:58:09 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Antoine Tenart <antoine.tenart@...e-electrons.com>,
	Brian Norris <computersforpeace@...il.com>
Subject: [PATCH 4.2 176/258] mtd: pxa3xx_nand: add a default chunk size

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: =?UTF-8?q?Antoine=20T=C3=A9nart?= <antoine.tenart@...e-electrons.com>

commit bc3e00f04cc1fe033a289c2fc2e5c73c0168d360 upstream.

When keeping the configuration set by the bootloader (by using
the marvell,nand-keep-config property), the pxa3xx_nand_detect_config()
function is called and set the chunk size to 512 as a default value if
NDCR_PAGE_SZ is not set.

In the other case, when not keeping the bootloader configuration, no
chunk size is set. Fix this by adding a default chunk size of 512.

Fixes: 70ed85232a93 ("mtd: nand: pxa3xx: Introduce multiple page I/O
support")

Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com>
Acked-by: Robert Jarzmik <robert.jarzmik@...e>
Signed-off-by: Brian Norris <computersforpeace@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mtd/nand/pxa3xx_nand.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1473,6 +1473,9 @@ static int pxa3xx_nand_scan(struct mtd_i
 	if (pdata->keep_config && !pxa3xx_nand_detect_config(info))
 		goto KEEP_CONFIG;
 
+	/* Set a default chunk size */
+	info->chunk_size = 512;
+
 	ret = pxa3xx_nand_sensing(info);
 	if (ret) {
 		dev_info(&info->pdev->dev, "There is no chip on cs %d!\n",


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