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From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: liang.yang@amlogic.com, linux-amlogic@lists.infradead.org,
	linux-mtd@lists.infradead.org, richard@nod.at,
	miquel.raynal@bootlin.com
Cc: jianxin.pan@amlogic.com, bbrezillon@kernel.org,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	linux-kernel@vger.kernel.org, marek.vasut@gmail.com,
	computersforpeace@gmail.com, dwmw2@infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/4] mtd: rawnand: meson: use of_property_count_elems_of_size helper
Date: Fri, 12 Apr 2019 00:00:54 +0200	[thread overview]
Message-ID: <20190411220056.19109-3-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190411220056.19109-1-martin.blumenstingl@googlemail.com>

Use the of_property_count_elems_of_size() helper instead of open-coding
it's logic. As a bonus this will now error out if the "reg" property
values use an incorrect size (anything other than sizeof(u32)).

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/mtd/nand/raw/meson_nand.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index c1a6af57dab5..9a6023638101 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1233,10 +1233,7 @@ meson_nfc_nand_chip_init(struct device *dev,
 	int ret, i;
 	u32 tmp, nsels;
 
-	if (!of_get_property(np, "reg", &nsels))
-		return -EINVAL;
-
-	nsels /= sizeof(u32);
+	nsels = of_property_count_elems_of_size(np, "reg", sizeof(u32));
 	if (!nsels || nsels > MAX_CE_NUM) {
 		dev_err(dev, "invalid register property size\n");
 		return -EINVAL;
-- 
2.21.0


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  parent reply	other threads:[~2019-04-11 22:02 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-11 22:00 [PATCH 0/4] meson-nand: small code improvements Martin Blumenstingl
2019-04-11 22:00 ` [PATCH 1/4] mtd: rawnand: meson: use struct_size macro Martin Blumenstingl
2019-04-15  6:01   ` Liang Yang
2019-04-11 22:00 ` Martin Blumenstingl [this message]
2019-04-15  6:02   ` [PATCH 2/4] mtd: rawnand: meson: use of_property_count_elems_of_size helper Liang Yang
2019-04-11 22:00 ` [PATCH 3/4] mtd: rawnand: meson: use a void pointer for meson_nfc_dma_buffer_setup Martin Blumenstingl
2019-04-15  6:03   ` Liang Yang
2019-04-11 22:00 ` [PATCH 4/4] mtd: rawnand: meson: only initialize the RB completion once Martin Blumenstingl
2019-04-15  6:04   ` Liang Yang
2019-04-18 19:44     ` Martin Blumenstingl
2019-04-19  3:52       ` Liang Yang
2019-04-19  9:00       ` Miquel Raynal
2019-04-18 16:22 ` [PATCH 0/4] meson-nand: small code improvements Miquel Raynal

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