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3ac709c113
Fix drivers misusing dev_to_shost Some drivers were using dev_to_shost to go from a struct device to the corresponding shost. Unfortunately, dev_to_shost only looks up the tree to find an shost (it's designed to go from a scsi_device or a scsi_target to the parent scsi_host), and these drivers were calling it with the parent of the scsi_host. I've fixed this by saving a pointer to the Scsi_Host in the drvdata, which matches what most scsi drivers do. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*
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* Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux.
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*
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* Based on work by Alan Hourihane and Kars de Jong
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*
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* Rewritten to use 53c700.c by Richard Hirst <richard@sleepie.demon.co.uk>
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*/
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#include <linux/module.h>
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#include <linux/blkdev.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <asm/bvme6000hw.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_spi.h>
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#include "53c700.h"
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MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>");
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MODULE_DESCRIPTION("BVME6000 NCR53C710 driver");
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MODULE_LICENSE("GPL");
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static struct scsi_host_template bvme6000_scsi_driver_template = {
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.name = "BVME6000 NCR53c710 SCSI",
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.proc_name = "BVME6000",
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.this_id = 7,
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.module = THIS_MODULE,
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};
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static struct platform_device *bvme6000_scsi_device;
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static __devinit int
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bvme6000_probe(struct device *dev)
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{
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struct Scsi_Host * host = NULL;
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struct NCR_700_Host_Parameters *hostdata;
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if (!MACH_IS_BVME6000)
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goto out;
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hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
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if (hostdata == NULL) {
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printk(KERN_ERR "bvme6000-scsi: "
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"Failed to allocate host data\n");
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goto out;
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}
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memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
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/* Fill in the required pieces of hostdata */
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hostdata->base = (void __iomem *)BVME_NCR53C710_BASE;
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hostdata->clock = 40; /* XXX - depends on the CPU clock! */
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hostdata->chip710 = 1;
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hostdata->dmode_extra = DMODE_FC2;
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hostdata->dcntl_extra = EA_710;
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hostdata->ctest7_extra = CTEST7_TT1;
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/* and register the chip */
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host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata, dev);
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if (!host) {
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printk(KERN_ERR "bvme6000-scsi: No host detected; "
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"board configuration problem?\n");
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goto out_free;
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}
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host->base = BVME_NCR53C710_BASE;
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host->this_id = 7;
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host->irq = BVME_IRQ_SCSI;
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if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi",
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host)) {
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printk(KERN_ERR "bvme6000-scsi: request_irq failed\n");
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goto out_put_host;
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}
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dev_set_drvdata(dev, host);
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scsi_scan_host(host);
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return 0;
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out_put_host:
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scsi_host_put(host);
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out_free:
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kfree(hostdata);
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out:
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return -ENODEV;
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}
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static __devexit int
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bvme6000_device_remove(struct device *dev)
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{
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struct Scsi_Host *host = dev_get_drvdata(dev);
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struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
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scsi_remove_host(host);
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NCR_700_release(host);
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kfree(hostdata);
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free_irq(host->irq, host);
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return 0;
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}
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static struct device_driver bvme6000_scsi_driver = {
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.name = "bvme6000-scsi",
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.bus = &platform_bus_type,
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.probe = bvme6000_probe,
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.remove = __devexit_p(bvme6000_device_remove),
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};
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static int __init bvme6000_scsi_init(void)
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{
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int err;
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err = driver_register(&bvme6000_scsi_driver);
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if (err)
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return err;
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bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi",
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-1, NULL, 0);
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if (IS_ERR(bvme6000_scsi_device)) {
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driver_unregister(&bvme6000_scsi_driver);
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return PTR_ERR(bvme6000_scsi_device);
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}
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return 0;
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}
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static void __exit bvme6000_scsi_exit(void)
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{
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platform_device_unregister(bvme6000_scsi_device);
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driver_unregister(&bvme6000_scsi_driver);
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}
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module_init(bvme6000_scsi_init);
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module_exit(bvme6000_scsi_exit);
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