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Message-ID: <87oa3qbl9b.fsf@free-electrons.com>
Date: Wed, 14 Sep 2016 16:37:20 +0200
From: Gregory CLEMENT <gregory.clement@...e-electrons.com>
To: Arnd Bergmann <arnd@...db.de>
Cc: Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
linux-arm-kernel@...ts.infradead.org,
Russell King <linux@...linux.org.uk>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] ARM: mvebu/orion: remove NO_IRQ check from device init
Hi Arnd,
On mar., sept. 06 2016, Arnd Bergmann <arnd@...db.de> wrote:
> For most devices, we know in advance whether they have an
> interrupt line or not, so we can avoid passing NO_IRQ and
> instead split fill_resources() into two interfaces, with
> only the new fill_resources_irq() function taking an irq
> argument, which it then can use unconditionally.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Applied on mvebu/soc
Thanks,
Gregory
> ---
> arch/arm/plat-orion/common.c | 52 ++++++++++++++++++++++++--------------------
> 1 file changed, 29 insertions(+), 23 deletions(-)
>
> diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c
> index 7757f71fe709..7b9b70785a54 100644
> --- a/arch/arm/plat-orion/common.c
> +++ b/arch/arm/plat-orion/common.c
> @@ -52,21 +52,27 @@ void __init orion_clkdev_init(struct clk *tclk)
> static void fill_resources(struct platform_device *device,
> struct resource *resources,
> resource_size_t mapbase,
> - resource_size_t size,
> - unsigned int irq)
> + resource_size_t size)
> {
> device->resource = resources;
> device->num_resources = 1;
> resources[0].flags = IORESOURCE_MEM;
> resources[0].start = mapbase;
> resources[0].end = mapbase + size;
> +}
>
> - if (irq != NO_IRQ) {
> - device->num_resources++;
> - resources[1].flags = IORESOURCE_IRQ;
> - resources[1].start = irq;
> - resources[1].end = irq;
> - }
> +static void fill_resources_irq(struct platform_device *device,
> + struct resource *resources,
> + resource_size_t mapbase,
> + resource_size_t size,
> + unsigned int irq)
> +{
> + fill_resources(device, resources, mapbase, size);
> +
> + device->num_resources++;
> + resources[1].flags = IORESOURCE_IRQ;
> + resources[1].start = irq;
> + resources[1].end = irq;
> }
>
> /*****************************************************************************
> @@ -93,7 +99,7 @@ static void __init uart_complete(
> data->uartclk = uart_get_clk_rate(clk);
> orion_uart->dev.platform_data = data;
>
> - fill_resources(orion_uart, resources, mapbase, 0xff, irq);
> + fill_resources_irq(orion_uart, resources, mapbase, 0xff, irq);
> platform_device_register(orion_uart);
> }
>
> @@ -305,8 +311,8 @@ void __init orion_ge00_init(struct mv643xx_eth_platform_data *eth_data,
> unsigned int tx_csum_limit)
> {
> fill_resources(&orion_ge00_shared, orion_ge00_shared_resources,
> - mapbase + 0x2000, SZ_16K - 1, NO_IRQ);
> - fill_resources(&orion_ge_mvmdio, orion_ge_mvmdio_resources,
> + mapbase + 0x2000, SZ_16K - 1);
> + fill_resources_irq(&orion_ge_mvmdio, orion_ge_mvmdio_resources,
> mapbase + 0x2004, 0x84 - 1, irq_err);
> orion_ge00_shared_data.tx_csum_limit = tx_csum_limit;
> ge_complete(&orion_ge00_shared_data,
> @@ -357,7 +363,7 @@ void __init orion_ge01_init(struct mv643xx_eth_platform_data *eth_data,
> unsigned int tx_csum_limit)
> {
> fill_resources(&orion_ge01_shared, orion_ge01_shared_resources,
> - mapbase + 0x2000, SZ_16K - 1, NO_IRQ);
> + mapbase + 0x2000, SZ_16K - 1);
> orion_ge01_shared_data.tx_csum_limit = tx_csum_limit;
> ge_complete(&orion_ge01_shared_data,
> orion_ge01_resources, irq, &orion_ge01_shared,
> @@ -406,7 +412,7 @@ void __init orion_ge10_init(struct mv643xx_eth_platform_data *eth_data,
> unsigned long irq)
> {
> fill_resources(&orion_ge10_shared, orion_ge10_shared_resources,
> - mapbase + 0x2000, SZ_16K - 1, NO_IRQ);
> + mapbase + 0x2000, SZ_16K - 1);
> ge_complete(&orion_ge10_shared_data,
> orion_ge10_resources, irq, &orion_ge10_shared,
> NULL,
> @@ -454,7 +460,7 @@ void __init orion_ge11_init(struct mv643xx_eth_platform_data *eth_data,
> unsigned long irq)
> {
> fill_resources(&orion_ge11_shared, orion_ge11_shared_resources,
> - mapbase + 0x2000, SZ_16K - 1, NO_IRQ);
> + mapbase + 0x2000, SZ_16K - 1);
> ge_complete(&orion_ge11_shared_data,
> orion_ge11_resources, irq, &orion_ge11_shared,
> NULL,
> @@ -535,7 +541,7 @@ void __init orion_i2c_init(unsigned long mapbase,
> unsigned long freq_m)
> {
> orion_i2c_pdata.freq_m = freq_m;
> - fill_resources(&orion_i2c, orion_i2c_resources, mapbase,
> + fill_resources_irq(&orion_i2c, orion_i2c_resources, mapbase,
> SZ_32 - 1, irq);
> platform_device_register(&orion_i2c);
> }
> @@ -545,7 +551,7 @@ void __init orion_i2c_1_init(unsigned long mapbase,
> unsigned long freq_m)
> {
> orion_i2c_1_pdata.freq_m = freq_m;
> - fill_resources(&orion_i2c_1, orion_i2c_1_resources, mapbase,
> + fill_resources_irq(&orion_i2c_1, orion_i2c_1_resources, mapbase,
> SZ_32 - 1, irq);
> platform_device_register(&orion_i2c_1);
> }
> @@ -573,14 +579,14 @@ static struct platform_device orion_spi_1 = {
> void __init orion_spi_init(unsigned long mapbase)
> {
> fill_resources(&orion_spi, &orion_spi_resources,
> - mapbase, SZ_512 - 1, NO_IRQ);
> + mapbase, SZ_512 - 1);
> platform_device_register(&orion_spi);
> }
>
> void __init orion_spi_1_init(unsigned long mapbase)
> {
> fill_resources(&orion_spi_1, &orion_spi_1_resources,
> - mapbase, SZ_512 - 1, NO_IRQ);
> + mapbase, SZ_512 - 1);
> platform_device_register(&orion_spi_1);
> }
>
> @@ -738,7 +744,7 @@ void __init orion_ehci_init(unsigned long mapbase,
> enum orion_ehci_phy_ver phy_version)
> {
> orion_ehci_data.phy_version = phy_version;
> - fill_resources(&orion_ehci, orion_ehci_resources, mapbase, SZ_4K - 1,
> + fill_resources_irq(&orion_ehci, orion_ehci_resources, mapbase, SZ_4K - 1,
> irq);
>
> platform_device_register(&orion_ehci);
> @@ -762,7 +768,7 @@ static struct platform_device orion_ehci_1 = {
> void __init orion_ehci_1_init(unsigned long mapbase,
> unsigned long irq)
> {
> - fill_resources(&orion_ehci_1, orion_ehci_1_resources,
> + fill_resources_irq(&orion_ehci_1, orion_ehci_1_resources,
> mapbase, SZ_4K - 1, irq);
>
> platform_device_register(&orion_ehci_1);
> @@ -786,7 +792,7 @@ static struct platform_device orion_ehci_2 = {
> void __init orion_ehci_2_init(unsigned long mapbase,
> unsigned long irq)
> {
> - fill_resources(&orion_ehci_2, orion_ehci_2_resources,
> + fill_resources_irq(&orion_ehci_2, orion_ehci_2_resources,
> mapbase, SZ_4K - 1, irq);
>
> platform_device_register(&orion_ehci_2);
> @@ -816,7 +822,7 @@ void __init orion_sata_init(struct mv_sata_platform_data *sata_data,
> unsigned long irq)
> {
> orion_sata.dev.platform_data = sata_data;
> - fill_resources(&orion_sata, orion_sata_resources,
> + fill_resources_irq(&orion_sata, orion_sata_resources,
> mapbase, 0x5000 - 1, irq);
>
> platform_device_register(&orion_sata);
> @@ -846,7 +852,7 @@ void __init orion_crypto_init(unsigned long mapbase,
> unsigned long sram_size,
> unsigned long irq)
> {
> - fill_resources(&orion_crypto, orion_crypto_resources,
> + fill_resources_irq(&orion_crypto, orion_crypto_resources,
> mapbase, 0xffff, irq);
> orion_crypto.num_resources = 3;
> orion_crypto_resources[2].start = srambase;
> --
> 2.9.0
>
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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