linux-kernel - Re: [LINUX PATCH v12 2/2] memory: pl353: Add driver for arm pl353 static memory controller

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Message-ID: <e27c9c14-2b2d-3f8b-0371-9c82a0721b8e@xilinx.com>
Date:   Wed, 5 Dec 2018 15:46:55 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com>,
        <mmayer@...adcom.com>, <f.fainelli@...il.com>,
        <ladis@...ux-mips.org>, <treding@...dia.com>, <digetx@...il.com>,
        <d-gerlach@...com>
CC:     <linus.walleij@...aro.org>, <michal.simek@...inx.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [LINUX PATCH v12 2/2] memory: pl353: Add driver for arm pl353
 static memory controller

On 29. 11. 18 13:57, Naga Sureshkumar Relli wrote:
> Add driver for arm pl353 static memory controller. This controller is used in
> Xilinx Zynq SoC for interfacing the NAND and NOR/SRAM memory devices.
> 
> Signed-off-by: Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  drivers/memory/Kconfig     |   9 +
>  drivers/memory/Makefile    |   1 +
>  drivers/memory/pl353-smc.c | 468 +++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/pl353-smc.h  |  30 +++
>  4 files changed, 508 insertions(+)
>  create mode 100644 drivers/memory/pl353-smc.c
>  create mode 100644 include/linux/pl353-smc.h
> 

Missing changelog which was there in v11
https://lore.kernel.org/patchwork/patch/961604/

> diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
> index 63389f0..2d91b00 100644
> --- a/drivers/memory/Kconfig
> +++ b/drivers/memory/Kconfig
> @@ -145,6 +145,15 @@ config DA8XX_DDRCTL
>  	  Texas Instruments da8xx SoCs. It's used to tweak various memory
>  	  controller configuration options.
>  
> +config PL353_SMC
> +	tristate "ARM PL35X Static Memory Controller(SMC) driver"
> +	default y
> +	depends on ARM
> +	depends on ARM_AMBA
> +	help
> +	  This driver is for the ARM PL351/PL353 Static Memory
> +	  Controller(SMC) module.
> +
>  source "drivers/memory/samsung/Kconfig"
>  source "drivers/memory/tegra/Kconfig"
>  
> diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile
> index a01ab3e..90161de 100644
> --- a/drivers/memory/Makefile
> +++ b/drivers/memory/Makefile
> @@ -19,6 +19,7 @@ obj-$(CONFIG_MVEBU_DEVBUS)	+= mvebu-devbus.o
>  obj-$(CONFIG_JZ4780_NEMC)	+= jz4780-nemc.o
>  obj-$(CONFIG_MTK_SMI)		+= mtk-smi.o
>  obj-$(CONFIG_DA8XX_DDRCTL)	+= da8xx-ddrctl.o
> +obj-$(CONFIG_PL353_SMC)		+= pl353-smc.o
>  
>  obj-$(CONFIG_SAMSUNG_MC)	+= samsung/
>  obj-$(CONFIG_TEGRA_MC)		+= tegra/
> diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c
> new file mode 100644
> index 0000000..6738a84
> --- /dev/null
> +++ b/drivers/memory/pl353-smc.c
> @@ -0,0 +1,468 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * ARM PL353 SMC driver
> + *
> + * Copyright (C) 2012 - 2018 Xilinx, Inc
> + * Author: Punnaiah Choudary Kalluri <punnaiah@...inx.com>
> + * Author: Naga Sureshkumar Relli <nagasure@...inx.com>
> + *

remove line above.

and then fix these two

CHECK: Please use a blank line after function/struct/union/enum declarations
#359: FILE: drivers/memory/pl353-smc.c:299:
+}
+static struct amba_driver pl353_smc_driver;

CHECK: Alignment should match open parenthesis
#369: FILE: drivers/memory/pl353-smc.c:309:
+void pl353_smc_init_nand_interface(struct amba_device *adev,
+					struct device_node *nand_node)

total: 0 errors, 2 warnings, 2 checks, 520 lines checked

NOTE: For some of the reported defects, checkpatch may be able to

and also
this doesn't right too.

drivers/memory/pl353-smc.c:308:6: warning: symbol
'pl353_smc_init_nand_interface' was not declared. Should it be static?
  CC      drivers/memory/pl353-smc.o
drivers/memory/pl353-smc.c:308:6: warning: no previous prototype for
‘pl353_smc_init_nand_interface’ [-Wmissing-prototypes]
 void pl353_smc_init_nand_interface(struct amba_device *adev,
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/memory/pl353-smc.c:439:34: warning: ‘pl353_smc_of_match’ defined
but not used [-Wunused-const-variable=]
 static const struct of_device_id pl353_smc_of_match[] = {

Thanks,
Michal