linux-kernel - Re: [PATCH 4/6] dmaengine: pl330: add new items for pl330 private data

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Message-ID: <201601041321.VfNTPznW%fengguang.wu@intel.com>
Date:	Mon, 4 Jan 2016 13:43:31 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Wang Hongcheng <annie.wang@....com>
Cc:	kbuild-all@...org, Andy Shevchenko <andy.shevchenko@...il.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, dmaengine@...r.kernel.org,
	Borislav Petkov <bp@...en8.de>, Huang Rui <ray.huang@....com>,
	Wan Zongshun <vincent.wan@....com>, Ken Xue <ken.xue@....com>,
	Robin Murphy <robin.murphy@....com>,
	Graeme Gregory <gg@...mlogic.co.uk>, Tony Li <tony.li@....com>,
	Xiangliang Yu <Xiangliang.Yu@....com>,
	Wang Hongcheng <annie.wang@....com>
Subject: Re: [PATCH 4/6] dmaengine: pl330: add new items for pl330 private
 data

Hi Wang,

[auto build test WARNING on v4.4-rc8]
[cannot apply to tty/tty-testing pm/linux-next next-20151231]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Wang-Hongcheng/8250-AMD-Carrizo-UART-PL300-DMA-enablement/20160104-133639
config: x86_64-randconfig-x013-01040119 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

>> drivers/acpi/acpi_apd.c:41:34: warning: 'amd_pl330' defined but not used [-Wunused-variable]
    static struct dma_pl330_platdata amd_pl330 = {
                                     ^

vim +/amd_pl330 +41 drivers/acpi/acpi_apd.c

    25	#include <linux/amba/pl330.h>
    26	
    27	#include "internal.h"
    28	
    29	ACPI_MODULE_NAME("acpi_apd");
    30	struct apd_private_data;
    31	
    32	/**
    33	 * ACPI_APD_SYSFS : add device attributes in sysfs
    34	 * ACPI_APD_PM : attach power domain to device
    35	 */
    36	#define ACPI_APD_SYSFS	BIT(0)
    37	#define ACPI_APD_PM	BIT(1)
    38	
    39	static u8 peri_id[2] = { 0, 1 };
    40	
  > 41	static struct dma_pl330_platdata amd_pl330 = {
    42		.nr_valid_peri = 2,
    43		.peri_id = peri_id,
    44		.mcbuf_sz = 0,
    45		.flags = IRQF_SHARED,
    46	};
    47	/**
    48	 * struct apd_device_desc - a descriptor for apd device
    49	 * @flags: device flags like %ACPI_APD_SYSFS, %ACPI_APD_PM

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