d427e836d1
ide_find_port() now depends on ->chipset being set for occupied ide_hwifs[] slots so all host drivers have to initialize hwif->chipset properly. This patch fixes a regression on hosts with > 1 port or with a single port but no devices attached to it for an affected host drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/*
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* ARM default IDE host driver
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*
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* Copyright (C) 2004 Bartlomiej Zolnierkiewicz
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* Based on code by: Russell King, Ian Molton and Alexander Schulz.
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*
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* May be copied or modified under the terms of the GNU General Public License.
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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/ide.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#define DRV_NAME "ide_arm"
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#ifdef CONFIG_ARCH_CLPS7500
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# include <asm/arch/hardware.h>
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#
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# define IDE_ARM_IO (ISASLOT_IO + 0x1f0)
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# define IDE_ARM_IRQ IRQ_ISA_14
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#else
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# define IDE_ARM_IO 0x1f0
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# define IDE_ARM_IRQ IRQ_HARDDISK
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#endif
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static int __init ide_arm_init(void)
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{
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ide_hwif_t *hwif;
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hw_regs_t hw;
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unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
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u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
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if (!request_region(base, 8, DRV_NAME)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
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DRV_NAME, base, base + 7);
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return -EBUSY;
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}
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if (!request_region(ctl, 1, DRV_NAME)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
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DRV_NAME, ctl);
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release_region(base, 8);
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return -EBUSY;
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}
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memset(&hw, 0, sizeof(hw));
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ide_std_init_ports(&hw, base, ctl);
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hw.irq = IDE_ARM_IRQ;
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hw.chipset = ide_generic;
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hwif = ide_find_port();
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if (hwif) {
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ide_init_port_hw(hwif, &hw);
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idx[0] = hwif->index;
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ide_device_add(idx, NULL);
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}
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return 0;
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}
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module_init(ide_arm_init);
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MODULE_LICENSE("GPL");
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