forked from luck/tmp_suning_uos_patched
ide-pnp: manage I/O resources in driver
* Tell IDE layer to not manage resources by setting hwif->mmio flag. * Use {request,release}_region() for resources management. * Use driver name for resources management. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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7a2199f341
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134d4548a7
@ -18,6 +18,8 @@
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#include <linux/pnp.h>
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#include <linux/ide.h>
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#define DRV_NAME "ide-pnp"
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/* Add your devices here :)) */
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static struct pnp_device_id idepnp_devices[] = {
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/* Generic ESDI/IDE/ATA compatible hard disk controller */
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@ -29,13 +31,29 @@ static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
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{
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hw_regs_t hw;
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ide_hwif_t *hwif;
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unsigned long base, ctl;
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if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
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return -1;
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base = pnp_port_start(dev, 0);
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ctl = pnp_port_start(dev, 1);
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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, pnp_port_start(dev, 0),
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pnp_port_start(dev, 1));
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ide_std_init_ports(&hw, base, ctl);
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hw.irq = pnp_irq(dev, 0);
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hwif = ide_find_port();
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@ -45,6 +63,7 @@ static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
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ide_init_port_data(hwif, index);
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ide_init_port_hw(hwif, &hw);
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hwif->mmio = 1;
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printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
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pnp_set_drvdata(dev, hwif);
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@ -54,6 +73,9 @@ static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
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return 0;
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}
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release_region(ctl, 1);
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release_region(base, 8);
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return -1;
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}
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@ -65,6 +87,9 @@ static void idepnp_remove(struct pnp_dev *dev)
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ide_unregister(hwif->index);
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else
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printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
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release_region(pnp_port_start(dev, 1), 1);
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release_region(pnp_port_start(dev, 0), 8);
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}
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static struct pnp_driver idepnp_driver = {
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