From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Rob Herring <robh+dt@kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Vignesh Raghavendra <vigneshr@ti.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Mark Brown <broonie@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Sergei Shtylyov <sergei.shtylyov@gmail.com>,
devicetree@vger.kernel.org, linux-mtd@lists.infradead.org,
linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
Prabhakar <prabhakar.csengg@gmail.com>,
Biju Das <biju.das.jz@bp.renesas.com>
Subject: Re: [PATCH 5/6] memory: renesas-rpc-if: Drop usage of RPCIF_DIRMAP_SIZE macro
Date: Thu, 30 Sep 2021 15:55:15 +0200 [thread overview]
Message-ID: <YVXBwx7rxJLRhlTI@shikoro> (raw)
In-Reply-To: <20210928140721.8805-6-prabhakar.mahadev-lad.rj@bp.renesas.com>
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On Tue, Sep 28, 2021 at 03:07:20PM +0100, Lad Prabhakar wrote:
> RPCIF_DIRMAP_SIZE may differ on various SoC's. Instead of using
> RPCIF_DIRMAP_SIZE macro use resource size to get dirmap size
> which is already part of struct rpcif.
>
> Also make sure we return error in case devm_ioremap_resource()
> fails for dirmap.
>
> Fixes: ca7d8b980b67 ("memory: add Renesas RPC-IF driver")
> Fixes: 59e27d7c94aa ("memory: renesas-rpc-if: fix possible NULL pointer dereference of resource")
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
In general, all fine. I just think this should be split into two
patches:
> @@ -147,8 +147,6 @@
> #define RPCIF_PHYINT 0x0088 /* R/W */
> #define RPCIF_PHYINT_WPVAL BIT(1)
>
> -#define RPCIF_DIRMAP_SIZE 0x4000000
> -
> static const struct regmap_range rpcif_volatile_ranges[] = {
> regmap_reg_range(RPCIF_SMRDR0, RPCIF_SMRDR1),
> regmap_reg_range(RPCIF_SMWDR0, RPCIF_SMWDR1),
> @@ -547,8 +545,8 @@ EXPORT_SYMBOL(rpcif_manual_xfer);
>
> ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf)
> {
> - loff_t from = offs & (RPCIF_DIRMAP_SIZE - 1);
> - size_t size = RPCIF_DIRMAP_SIZE - from;
> + loff_t from = offs & (rpc->size - 1);
> + size_t size = rpc->size - from;
>
> if (len > size)
> len = size;
This is the second patch to split which fixes ca7d8b980b67.
> @@ -244,7 +242,7 @@ int rpcif_sw_init(struct rpcif *rpc, struct device *dev)
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dirmap");
> rpc->dirmap = devm_ioremap_resource(&pdev->dev, res);
> if (IS_ERR(rpc->dirmap))
> - rpc->dirmap = NULL;
> + return PTR_ERR(rpc->dirmap);
> rpc->size = resource_size(res);
>
> rpc->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
This is the first patch to split which fixes 59e27d7c94aa.
Makes sense?
If you agree, you can add my tag already to the new patches:
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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next prev parent reply other threads:[~2021-09-30 13:55 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-28 14:07 [PATCH 0/6] Add SPI Multi I/O Bus Controller support for RZ/G2L Lad Prabhakar
2021-09-28 14:07 ` [PATCH 1/6] dt-bindings: memory: renesas,rpc-if: Add support for the R9A07G044 Lad Prabhakar
2021-10-04 18:30 ` Rob Herring
2021-10-05 14:46 ` Geert Uytterhoeven
2021-09-28 14:07 ` [PATCH 2/6] dt-bindings: memory: renesas,rpc-if: Add optional interrupts property Lad Prabhakar
2021-09-30 13:39 ` Wolfram Sang
2021-10-04 18:30 ` Rob Herring
2021-10-05 15:11 ` Geert Uytterhoeven
2021-09-28 14:07 ` [PATCH 3/6] spi: spi-rpc-if: Check return value of rpcif_sw_init() Lad Prabhakar
2021-09-30 13:41 ` Wolfram Sang
2021-10-05 15:25 ` Geert Uytterhoeven
2021-09-28 14:07 ` [PATCH 4/6] mtd: hyperbus: rpc-if: " Lad Prabhakar
2021-09-30 13:42 ` Wolfram Sang
2021-10-08 9:27 ` Geert Uytterhoeven
2021-09-28 14:07 ` [PATCH 5/6] memory: renesas-rpc-if: Drop usage of RPCIF_DIRMAP_SIZE macro Lad Prabhakar
2021-09-30 13:55 ` Wolfram Sang [this message]
2021-09-30 14:14 ` Lad, Prabhakar
2021-09-30 14:43 ` Wolfram Sang
2021-09-28 14:07 ` [PATCH 6/6] memory: renesas-rpc-if: Add support for RZ/G2L Lad Prabhakar
2021-09-30 14:40 ` Wolfram Sang
2021-10-01 8:02 ` Lad, Prabhakar
2021-10-01 8:54 ` Wolfram Sang
2021-10-01 9:06 ` Lad, Prabhakar
2021-10-01 12:04 ` Wolfram Sang
2021-10-01 12:53 ` Lad, Prabhakar
2021-10-05 9:14 ` Wolfram Sang
2021-09-30 15:01 ` [PATCH 0/6] Add SPI Multi I/O Bus Controller " Wolfram Sang
2021-10-01 8:03 ` Lad, Prabhakar
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