drivers/scsi/scsi_devinfo.c

   1
   2 #include <linux/blkdev.h>
   3 #include <linux/init.h>
   4 #include <linux/kernel.h>
   5 #include <linux/module.h>
   6 #include <linux/moduleparam.h>
   7 #include <linux/proc_fs.h>
   8 #include <linux/seq_file.h>
   9 #include <scsi/scsi_devinfo.h>
  10
  11 #include "scsi.h"
  12 #include <scsi/scsi_host.h>
  13 #include "scsi_priv.h"
  14
  15 /*
  16  * scsi_dev_info_list: structure to hold black/white listed devices.
  17  */
  18 struct scsi_dev_info_list {
  19         struct list_head dev_info_list;
  20         char vendor[8];
  21         char model[16];
  22         unsigned flags;
  23         unsigned compatible; /* for use with scsi_static_device_list entries */
  24 };
  25
  26
  27 static const char spaces[] = "                "; /* 16 of them */
  28 static unsigned scsi_default_dev_flags;
  29 static LIST_HEAD(scsi_dev_info_list);
  30 static __initdata char scsi_dev_flags[256];
  31
  32 /*
  33  * scsi_static_device_list: deprecated list of devices that require
  34  * settings that differ from the default, includes black-listed (broken)
  35  * devices. The entries here are added to the tail of scsi_dev_info_list
  36  * via scsi_dev_info_list_init.
  37  *
  38  * Do not add to this list, use the command line or proc interface to add
  39  * to the scsi_dev_info_list. This table will eventually go away.
  40  */
  41 static struct {
  42         char *vendor;
  43         char *model;
  44         char *revision; /* revision known to be bad, unused */
  45         unsigned flags;
  46 } scsi_static_device_list[] __initdata = {
  47         /*
  48          * The following devices are known not to tolerate a lun != 0 scan
  49          * for one reason or another. Some will respond to all luns,
  50          * others will lock up.
  51          */
  52         {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN},     /* locks up */
  53         {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN},       /* locks up */
  54         {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN},       /* locks up */
  55         {"DENON", "DRD-25X", "V", BLIST_NOLUN},                 /* locks up */
  56         {"HITACHI", "DK312C", "CM81", BLIST_NOLUN},     /* responds to all lun */
  57         {"HITACHI", "DK314C", "CR21", BLIST_NOLUN},     /* responds to all lun */
  58         {"IMS", "CDD521/10", "2.06", BLIST_NOLUN},      /* locks up */
  59         {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN},     /* locks up */
  60         {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN},     /* locks up */
  61         {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN},   /* locks up */
  62         {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN},     /* locks up */
  63         {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN},     /* locks up */
  64         {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN},    /* responds to all lun */
  65         {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
  66         {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN},    /* responds to all lun */
  67         {"RODIME", "RO3000S", "2.33", BLIST_NOLUN},     /* locks up */
  68         {"SUN", "SENA", NULL, BLIST_NOLUN},             /* responds to all luns */
  69         /*
  70          * The following causes a failed REQUEST SENSE on lun 1 for
  71          * aha152x controller, which causes SCSI code to reset bus.
  72          */
  73         {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
  74         /*
  75          * The following causes a failed REQUEST SENSE on lun 1 for
  76          * aha152x controller, which causes SCSI code to reset bus.
  77          */
  78         {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
  79         {"SEAGATE", "ST296", "921", BLIST_NOLUN},       /* responds to all lun */
  80         {"SEAGATE", "ST1581", "6538", BLIST_NOLUN},     /* responds to all lun */
  81         {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
  82         {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
  83         {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
  84         {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
  85         {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN},   /* locks up */
  86         {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN},       /* locks up */
  87         /*
  88          * The following causes a failed REQUEST SENSE on lun 1 for
  89          * seagate controller, which causes SCSI code to reset bus.
  90          */
  91         {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
  92         {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN},        /* responds to all lun */
  93         /*
  94          * The following causes a failed REQUEST SENSE on lun 1 for
  95          * seagate controller, which causes SCSI code to reset bus.
  96          */
  97         {"HP", "C1750A", "3226", BLIST_NOLUN},          /* scanjet iic */
  98         {"HP", "C1790A", "", BLIST_NOLUN},              /* scanjet iip */
  99         {"HP", "C2500A", "", BLIST_NOLUN},              /* scanjet iicx */
 100         {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
 101         {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN},      /* responds to all lun */
 102         {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN},     /* locks up */
 103         {"NEC", "D3856", "0009", BLIST_NOLUN},
 104         {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN},    /* locks up */
 105         {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN},    /* locks up */
 106         {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN},    /* locks up */
 107         {"RELISYS", "Scorpio", NULL, BLIST_NOLUN},      /* responds to all lun */
 108         {"SANKYO", "CP525", "6.64", BLIST_NOLUN},       /* causes failed REQ SENSE, extra reset */
 109         {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
 110         {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN},      /* locks up */
 111         {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN},      /* locks up */
 112         {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN},     /* locks up */
 113         {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN},    /* locks up */
 114
 115         /*
 116          * Other types of devices that have special flags.
 117          */
 118         {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
 119         {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
 120         {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
 121         {"BELKIN", "USB 2 HS-CF", "1.95",  BLIST_FORCELUN},
 122         {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
 123         {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN},
 124         {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN},     /* CMD RAID Controller */
 125         {"CNSI", "G7324", NULL, BLIST_SPARSELUN},       /* Chaparral G7324 RAID */
 126         {"CNSi", "G8324", NULL, BLIST_SPARSELUN},       /* Chaparral G8324 RAID */
 127         {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN},
 128         {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
 129         {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 130         {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 131         {"COMPAQ", "HSV110", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 132         {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
 133         {"DEC", "HSG80", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 134         {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
 135         {"DELL", "PV660F   PSEUDO", NULL, BLIST_SPARSELUN},
 136         {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN},     /* Dell PV 530F */
 137         {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
 138         {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
 139         {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
 140         {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
 141         {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
 142         {"EMULEX", "MD21/S2     ESDI", NULL, BLIST_SINGLELUN},
 143         {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
 144         {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN},
 145         {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN},
 146         {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN},
 147         {"HITACHI", "DF400", "*", BLIST_SPARSELUN},
 148         {"HITACHI", "DF500", "*", BLIST_SPARSELUN},
 149         {"HITACHI", "DF600", "*", BLIST_SPARSELUN},
 150         {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN},       /* HP VA7400 */
 151         {"HP", "OPEN-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP XP Arrays */
 152         {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
 153         {"HP", "HSV100", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 154         {"HP", "C1557A", NULL, BLIST_FORCELUN},
 155         {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
 156         {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
 157         {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
 158         {"IOMEGA", "Io20S         *F", NULL, BLIST_KEY},
 159         {"INSITE", "Floptical   F*8I", NULL, BLIST_KEY},
 160         {"INSITE", "I325VM", NULL, BLIST_KEY},
 161         {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
 162         {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 163         {"Medion", "Flash XL  MMC/SD", "2.6D", BLIST_FORCELUN},
 164         {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
 165         {"MICROP", "4110", NULL, BLIST_NOTQ},
 166         {"MYLEX", "DACARMRB", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
 167         {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
 168         {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 169         {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 170         {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 171         {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 172         {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 173         {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 174         {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 175         {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 176         {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
 177         {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
 178         {"SGI", "RAID3", "*", BLIST_SPARSELUN},
 179         {"SGI", "RAID5", "*", BLIST_SPARSELUN},
 180         {"SGI", "TP9100", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
 181         {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN},
 182         {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
 183         {"SONY", "TSL", NULL, BLIST_FORCELUN},          /* DDS3 & DDS4 autoloaders */
 184         {"SUN", "T300", "*", BLIST_SPARSELUN},
 185         {"SUN", "T4", "*", BLIST_SPARSELUN},
 186         {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
 187         {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
 188         {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
 189         {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN},
 190         {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
 191         {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
 192         {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
 193         { NULL, NULL, NULL, 0 },
 194 };
 195
 196 /*
 197  * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
 198  * devinfo vendor and model strings.
 199  */
 200 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
 201                                 char *from, int compatible)
 202 {
 203         size_t from_length;
 204
 205         from_length = strlen(from);
 206         strncpy(to, from, min(to_length, from_length));
 207         if (from_length < to_length) {
 208                 if (compatible) {
 209                         /*
 210                          * NUL terminate the string if it is short.
 211                          */
 212                         to[from_length] = '\0';
 213                 } else {
 214                         /*
 215                          * space pad the string if it is short.
 216                          */
 217                         strncpy(&to[from_length], spaces,
 218                                 to_length - from_length);
 219                 }
 220         }
 221         if (from_length > to_length)
 222                  printk(KERN_WARNING "%s: %s string '%s' is too long\n",
 223                         __FUNCTION__, name, from);
 224 }
 225
 226 /**
 227  * scsi_dev_info_list_add: add one dev_info list entry.
 228  * @vendor:     vendor string
 229  * @model:      model (product) string
 230  * @strflags:   integer string
 231  * @flag:       if strflags NULL, use this flag value
 232  *
 233  * Description:
 234  *      Create and add one dev_info entry for @vendor, @model, @strflags or
 235  *      @flag. If @compatible, add to the tail of the list, do not space
 236  *      pad, and set devinfo->compatible. The scsi_static_device_list entries
 237  *      are added with @compatible 1 and @clfags NULL.
 238  *
 239  * Returns: 0 OK, -error on failure.
 240  **/
 241 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
 242                             char *strflags, int flags)
 243 {
 244         struct scsi_dev_info_list *devinfo;
 245
 246         devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
 247         if (!devinfo) {
 248                 printk(KERN_ERR "%s: no memory\n", __FUNCTION__);
 249                 return -ENOMEM;
 250         }
 251
 252         scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
 253                             vendor, compatible);
 254         scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
 255                             model, compatible);
 256
 257         if (strflags)
 258                 devinfo->flags = simple_strtoul(strflags, NULL, 0);
 259         else
 260                 devinfo->flags = flags;
 261
 262         devinfo->compatible = compatible;
 263
 264         if (compatible)
 265                 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list);
 266         else
 267                 list_add(&devinfo->dev_info_list, &scsi_dev_info_list);
 268
 269         return 0;
 270 }
 271
 272 /**
 273  * scsi_dev_info_list_add_str: parse dev_list and add to the
 274  * scsi_dev_info_list.
 275  * @dev_list:   string of device flags to add
 276  *
 277  * Description:
 278  *      Parse dev_list, and add entries to the scsi_dev_info_list.
 279  *      dev_list is of the form "vendor:product:flag,vendor:product:flag".
 280  *      dev_list is modified via strsep. Can be called for command line
 281  *      addition, for proc or mabye a sysfs interface.
 282  *
 283  * Returns: 0 if OK, -error on failure.
 284  **/
 285 static int scsi_dev_info_list_add_str(char *dev_list)
 286 {
 287         char *vendor, *model, *strflags, *next;
 288         char *next_check;
 289         int res = 0;
 290
 291         next = dev_list;
 292         if (next && next[0] == '"') {
 293                 /*
 294                  * Ignore both the leading and trailing quote.
 295                  */
 296                 next++;
 297                 next_check = ",\"";
 298         } else {
 299                 next_check = ",";
 300         }
 301
 302         /*
 303          * For the leading and trailing '"' case, the for loop comes
 304          * through the last time with vendor[0] == '\0'.
 305          */
 306         for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
 307              && (res == 0); vendor = strsep(&next, ":")) {
 308                 strflags = NULL;
 309                 model = strsep(&next, ":");
 310                 if (model)
 311                         strflags = strsep(&next, next_check);
 312                 if (!model || !strflags) {
 313                         printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
 314                                " '%s'\n", __FUNCTION__, vendor, model,
 315                                strflags);
 316                         res = -EINVAL;
 317                 } else
 318                         res = scsi_dev_info_list_add(0 /* compatible */, vendor,
 319                                                      model, strflags, 0);
 320         }
 321         return res;
 322 }
 323
 324 /**
 325  * get_device_flags - get device specific flags from the dynamic device
 326  * list. Called during scan time.
 327  * @vendor:     vendor name
 328  * @model:      model name
 329  *
 330  * Description:
 331  *     Search the scsi_dev_info_list for an entry matching @vendor and
 332  *     @model, if found, return the matching flags value, else return
 333  *     the host or global default settings.
 334  **/
 335 int scsi_get_device_flags(struct scsi_device *sdev, unsigned char *vendor,
 336                           unsigned char *model)
 337 {
 338         struct scsi_dev_info_list *devinfo;
 339         unsigned int bflags;
 340
 341         bflags = sdev->sdev_bflags;
 342         if (!bflags)
 343                 bflags = scsi_default_dev_flags;
 344
 345         list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
 346                 if (devinfo->compatible) {
 347                         /*
 348                          * Behave like the older version of get_device_flags.
 349                          */
 350                         size_t max;
 351                         /*
 352                          * XXX why skip leading spaces? If an odd INQUIRY
 353                          * value, that should have been part of the
 354                          * scsi_static_device_list[] entry, such as "  FOO"
 355                          * rather than "FOO". Since this code is already
 356                          * here, and we don't know what device it is
 357                          * trying to work with, leave it as-is.
 358                          */
 359                         max = 8;        /* max length of vendor */
 360                         while ((max > 0) && *vendor == ' ') {
 361                                 max--;
 362                                 vendor++;
 363                         }
 364                         /*
 365                          * XXX removing the following strlen() would be
 366                          * good, using it means that for a an entry not in
 367                          * the list, we scan every byte of every vendor
 368                          * listed in scsi_static_device_list[], and never match
 369                          * a single one (and still have to compare at
 370                          * least the first byte of each vendor).
 371                          */
 372                         if (memcmp(devinfo->vendor, vendor,
 373                                     min(max, strlen(devinfo->vendor))))
 374                                 continue;
 375                         /*
 376                          * Skip spaces again.
 377                          */
 378                         max = 16;       /* max length of model */
 379                         while ((max > 0) && *model == ' ') {
 380                                 max--;
 381                                 model++;
 382                         }
 383                         if (memcmp(devinfo->model, model,
 384                                    min(max, strlen(devinfo->model))))
 385                                 continue;
 386                         return devinfo->flags;
 387                 } else {
 388                         if (!memcmp(devinfo->vendor, vendor,
 389                                      sizeof(devinfo->vendor)) &&
 390                              !memcmp(devinfo->model, model,
 391                                       sizeof(devinfo->model)))
 392                                 return devinfo->flags;
 393                 }
 394         }
 395         return bflags;
 396 }
 397
 398 #ifdef CONFIG_SCSI_PROC_FS
 399 /*
 400  * proc_scsi_dev_info_read: dump the scsi_dev_info_list via
 401  * /proc/scsi/device_info
 402  */
 403 static int proc_scsi_devinfo_read(char *buffer, char **start,
 404                                   off_t offset, int length)
 405 {
 406         struct scsi_dev_info_list *devinfo;
 407         int size, len = 0;
 408         off_t begin = 0;
 409         off_t pos = 0;
 410
 411         list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
 412                 size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n",
 413                         devinfo->vendor, devinfo->model, devinfo->flags);
 414                 len += size;
 415                 pos = begin + len;
 416                 if (pos < offset) {
 417                         len = 0;
 418                         begin = pos;
 419                 }
 420                 if (pos > offset + length)
 421                         goto stop_output;
 422         }
 423
 424 stop_output:
 425         *start = buffer + (offset - begin);     /* Start of wanted data */
 426         len -= (offset - begin);        /* Start slop */
 427         if (len > length)
 428                 len = length;   /* Ending slop */
 429         return (len);
 430 }
 431
 432 /*
 433  * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via
 434  * /proc.
 435  *
 436  * Use: echo "vendor:model:flag" > /proc/scsi/device_info
 437  *
 438  * To add a black/white list entry for vendor and model with an integer
 439  * value of flag to the scsi device info list.
 440  */
 441 static int proc_scsi_devinfo_write(struct file *file, const char __user *buf,
 442                                    unsigned long length, void *data)
 443 {
 444         char *buffer;
 445         int err = length;
 446
 447         if (!buf || length>PAGE_SIZE)
 448                 return -EINVAL;
 449         if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
 450                 return -ENOMEM;
 451         if (copy_from_user(buffer, buf, length)) {
 452                 err =-EFAULT;
 453                 goto out;
 454         }
 455
 456         if (length < PAGE_SIZE)
 457                 buffer[length] = '\0';
 458         else if (buffer[PAGE_SIZE-1]) {
 459                 err = -EINVAL;
 460                 goto out;
 461         }
 462
 463         scsi_dev_info_list_add_str(buffer);
 464
 465 out:
 466         free_page((unsigned long)buffer);
 467         return err;
 468 }
 469 #endif /* CONFIG_SCSI_PROC_FS */
 470
 471 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
 472 MODULE_PARM_DESC(dev_flags,
 473          "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
 474          " list entries for vendor and model with an integer value of flags"
 475          " to the scsi device info list");
 476
 477 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
 478 MODULE_PARM_DESC(default_dev_flags,
 479                  "scsi default device flag integer value");
 480
 481 /**
 482  * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove
 483  *      the scsi_dev_info_list.
 484  **/
 485 void scsi_exit_devinfo(void)
 486 {
 487         struct list_head *lh, *lh_next;
 488         struct scsi_dev_info_list *devinfo;
 489
 490 #ifdef CONFIG_SCSI_PROC_FS
 491         remove_proc_entry("scsi/device_info", 0);
 492 #endif
 493
 494         list_for_each_safe(lh, lh_next, &scsi_dev_info_list) {
 495                 devinfo = list_entry(lh, struct scsi_dev_info_list,
 496                                      dev_info_list);
 497                 kfree(devinfo);
 498         }
 499 }
 500
 501 /**
 502  * scsi_dev_list_init: set up the dynamic device list.
 503  * @dev_list:   string of device flags to add
 504  *
 505  * Description:
 506  *      Add command line @dev_list entries, then add
 507  *      scsi_static_device_list entries to the scsi device info list.
 508  **/
 509 int scsi_init_devinfo(void)
 510 {
 511 #ifdef CONFIG_SCSI_PROC_FS
 512         struct proc_dir_entry *p;
 513 #endif
 514         int error, i;
 515
 516         error = scsi_dev_info_list_add_str(scsi_dev_flags);
 517         if (error)
 518                 return error;
 519
 520         for (i = 0; scsi_static_device_list[i].vendor; i++) {
 521                 error = scsi_dev_info_list_add(1 /* compatibile */,
 522                                 scsi_static_device_list[i].vendor,
 523                                 scsi_static_device_list[i].model,
 524                                 NULL,
 525                                 scsi_static_device_list[i].flags);
 526                 if (error)
 527                         goto out;
 528         }
 529
 530 #ifdef CONFIG_SCSI_PROC_FS
 531         p = create_proc_entry("scsi/device_info", 0, NULL);
 532         if (!p) {
 533                 error = -ENOMEM;
 534                 goto out;
 535         }
 536
 537         p->owner = THIS_MODULE;
 538         p->get_info = proc_scsi_devinfo_read;
 539         p->write_proc = proc_scsi_devinfo_write;
 540 #endif /* CONFIG_SCSI_PROC_FS */
 541
 542  out:
 543         if (error)
 544                 scsi_exit_devinfo();
 545         return error;
 546 }