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ARM: pxa: Use gpio arrays in palmld_hdd driver 

Use gpio_request_array() / gpio_free_array(), this makes the code
cleaner and less error prone.

This patch also properly frees GPIOs in case ata_host_activate() call fails.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
This commit is contained in:
Marek Vasut 2011-01-15 19:19:05 +01:00 committed by Eric Miao
parent e27af7edda
commit 6b1e3fca6f
1 changed files with 22 additions and 21 deletions
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43
drivers/ata/pata_palmld.c
View File

@ -33,6 +33,11 @@
#define DRV_NAME "pata_palmld"
static struct gpio palmld_hdd_gpios[] = {
{ GPIO_NR_PALMLD_IDE_PWEN, GPIOF_INIT_HIGH, "HDD Power" },
{ GPIO_NR_PALMLD_IDE_RESET, GPIOF_INIT_LOW, "HDD Reset" },
};
static struct scsi_host_template palmld_sht = {
ATA_PIO_SHT(DRV_NAME),
};
@ -52,28 +57,23 @@ static __devinit int palmld_pata_probe(struct platform_device *pdev)
/* allocate host */
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
return -ENOMEM;
if (!host) {
ret = -ENOMEM;
goto err1;
}
/* remap drive's physical memory address */
mem = devm_ioremap(&pdev->dev, PALMLD_IDE_PHYS, 0x1000);
if (!mem)
return -ENOMEM;
if (!mem) {
ret = -ENOMEM;
goto err1;
}
/* request and activate power GPIO, IRQ GPIO */
ret = gpio_request(GPIO_NR_PALMLD_IDE_PWEN, "HDD PWR");
ret = gpio_request_array(palmld_hdd_gpios,
ARRAY_SIZE(palmld_hdd_gpios));
if (ret)
goto err1;
ret = gpio_direction_output(GPIO_NR_PALMLD_IDE_PWEN, 1);
if (ret)
goto err2;
ret = gpio_request(GPIO_NR_PALMLD_IDE_RESET, "HDD RST");
if (ret)
goto err2;
ret = gpio_direction_output(GPIO_NR_PALMLD_IDE_RESET, 0);
if (ret)
goto err3;
/* reset the drive */
gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 0);
@ -96,13 +96,15 @@ static __devinit int palmld_pata_probe(struct platform_device *pdev)
ata_sff_std_ports(&ap->ioaddr);
/* activate host */
return ata_host_activate(host, 0, NULL, IRQF_TRIGGER_RISING,
ret = ata_host_activate(host, 0, NULL, IRQF_TRIGGER_RISING,
&palmld_sht);
if (ret)
goto err2;
return ret;
err3:
gpio_free(GPIO_NR_PALMLD_IDE_RESET);
err2:
gpio_free(GPIO_NR_PALMLD_IDE_PWEN);
gpio_free_array(palmld_hdd_gpios, ARRAY_SIZE(palmld_hdd_gpios));
err1:
return ret;
}
@ -116,8 +118,7 @@ static __devexit int palmld_pata_remove(struct platform_device *dev)
/* power down the HDD */
gpio_set_value(GPIO_NR_PALMLD_IDE_PWEN, 0);
gpio_free(GPIO_NR_PALMLD_IDE_RESET);
gpio_free(GPIO_NR_PALMLD_IDE_PWEN);
gpio_free_array(palmld_hdd_gpios, ARRAY_SIZE(palmld_hdd_gpios));
return 0;
}