373e9644c5
Several GPIO functions have been returning -1 to indicate an error instead of returning a proper error code. Change to return -EINVAL for invalid argument(s). Signed-off-by: Ben Dooks <ben-linux@fluff.org>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/* linux/arch/arm/mach-s3c2400/gpio.c
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*
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* Copyright (c) 2006 Lucas Correia Villa Real <lucasvr@gobolinux.org>
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*
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* S3C2400 GPIO support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <mach/regs-gpio.h>
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int s3c2400_gpio_getirq(unsigned int pin)
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{
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if (pin < S3C2410_GPE(0) || pin > S3C2400_GPE(7))
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return -EINVAL; /* not valid interrupts */
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return (pin - S3C2410_GPE(0)) + IRQ_EINT0;
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}
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EXPORT_SYMBOL(s3c2400_gpio_getirq);
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