drivers/net/wireless/iwlwifi/iwl-pci.c

   1 /******************************************************************************
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   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
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   8  * Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
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  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
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  17  * General Public License for more details.
  18  *
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  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called LICENSE.GPL.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
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  33  * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
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  37  * modification, are permitted provided that the following conditions
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  44  *    the documentation and/or other materials provided with the
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  48  *    from this software without specific prior written permission.
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  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/module.h>
  64 #include <linux/pci.h>
  65 #include <linux/pci-aspm.h>
  66
  67 #include "iwl-io.h"
  68 #include "iwl-shared.h"
  69 #include "iwl-trans.h"
  70 #include "iwl-csr.h"
  71 #include "iwl-cfg.h"
  72 #include "iwl-drv.h"
  73 #include "iwl-trans.h"
  74
  75 #define IWL_PCI_DEVICE(dev, subdev, cfg) \
  76         .vendor = PCI_VENDOR_ID_INTEL,  .device = (dev), \
  77         .subvendor = PCI_ANY_ID, .subdevice = (subdev), \
  78         .driver_data = (kernel_ulong_t)&(cfg)
  79
  80 /* Hardware specific file defines the PCI IDs table for that hardware module */
  81 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
  82         {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
  83         {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
  84         {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
  85         {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
  86         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
  87         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
  88         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
  89         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
  90         {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
  91         {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
  92         {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
  93         {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
  94         {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
  95         {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
  96         {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
  97         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
  98         {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
  99         {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
 100         {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
 101         {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
 102         {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
 103         {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
 104         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
 105         {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
 106
 107 /* 5300 Series WiFi */
 108         {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
 109         {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
 110         {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
 111         {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
 112         {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
 113         {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
 114         {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
 115         {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
 116         {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
 117         {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
 118         {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
 119         {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
 120
 121 /* 5350 Series WiFi/WiMax */
 122         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
 123         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
 124         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
 125
 126 /* 5150 Series Wifi/WiMax */
 127         {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
 128         {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
 129         {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
 130         {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
 131         {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
 132         {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
 133
 134         {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
 135         {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
 136         {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
 137         {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
 138
 139 /* 6x00 Series */
 140         {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
 141         {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
 142         {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
 143         {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
 144         {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
 145         {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
 146         {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
 147         {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
 148         {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
 149         {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
 150
 151 /* 6x05 Series */
 152         {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
 153         {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
 154         {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
 155         {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
 156         {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
 157         {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
 158         {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
 159         {IWL_PCI_DEVICE(0x0082, 0xC020, iwl6005_2agn_sff_cfg)},
 160         {IWL_PCI_DEVICE(0x0085, 0xC220, iwl6005_2agn_sff_cfg)},
 161         {IWL_PCI_DEVICE(0x0082, 0x4820, iwl6005_2agn_d_cfg)},
 162         {IWL_PCI_DEVICE(0x0082, 0x1304, iwl6005_2agn_mow1_cfg)},/* low 5GHz active */
 163         {IWL_PCI_DEVICE(0x0082, 0x1305, iwl6005_2agn_mow2_cfg)},/* high 5GHz active */
 164
 165 /* 6x30 Series */
 166         {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
 167         {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
 168         {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
 169         {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
 170         {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
 171         {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
 172         {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
 173         {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
 174         {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
 175         {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
 176         {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
 177         {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
 178         {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
 179         {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
 180         {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
 181         {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
 182
 183 /* 6x50 WiFi/WiMax Series */
 184         {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
 185         {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
 186         {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
 187         {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
 188         {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
 189         {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
 190
 191 /* 6150 WiFi/WiMax Series */
 192         {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
 193         {IWL_PCI_DEVICE(0x0885, 0x1307, iwl6150_bg_cfg)},
 194         {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
 195         {IWL_PCI_DEVICE(0x0885, 0x1327, iwl6150_bg_cfg)},
 196         {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
 197         {IWL_PCI_DEVICE(0x0886, 0x1317, iwl6150_bg_cfg)},
 198
 199 /* 1000 Series WiFi */
 200         {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
 201         {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
 202         {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
 203         {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
 204         {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
 205         {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
 206         {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
 207         {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
 208         {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
 209         {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
 210         {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
 211         {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
 212
 213 /* 100 Series WiFi */
 214         {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
 215         {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
 216         {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
 217         {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
 218         {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
 219         {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
 220
 221 /* 130 Series WiFi */
 222         {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
 223         {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
 224         {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
 225         {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
 226         {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
 227         {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
 228
 229 /* 2x00 Series */
 230         {IWL_PCI_DEVICE(0x0890, 0x4022, iwl2000_2bgn_cfg)},
 231         {IWL_PCI_DEVICE(0x0891, 0x4222, iwl2000_2bgn_cfg)},
 232         {IWL_PCI_DEVICE(0x0890, 0x4422, iwl2000_2bgn_cfg)},
 233         {IWL_PCI_DEVICE(0x0890, 0x4822, iwl2000_2bgn_d_cfg)},
 234
 235 /* 2x30 Series */
 236         {IWL_PCI_DEVICE(0x0887, 0x4062, iwl2030_2bgn_cfg)},
 237         {IWL_PCI_DEVICE(0x0888, 0x4262, iwl2030_2bgn_cfg)},
 238         {IWL_PCI_DEVICE(0x0887, 0x4462, iwl2030_2bgn_cfg)},
 239
 240 /* 6x35 Series */
 241         {IWL_PCI_DEVICE(0x088E, 0x4060, iwl6035_2agn_cfg)},
 242         {IWL_PCI_DEVICE(0x088F, 0x4260, iwl6035_2agn_cfg)},
 243         {IWL_PCI_DEVICE(0x088E, 0x4460, iwl6035_2agn_cfg)},
 244         {IWL_PCI_DEVICE(0x088E, 0x4860, iwl6035_2agn_cfg)},
 245
 246 /* 105 Series */
 247         {IWL_PCI_DEVICE(0x0894, 0x0022, iwl105_bgn_cfg)},
 248         {IWL_PCI_DEVICE(0x0895, 0x0222, iwl105_bgn_cfg)},
 249         {IWL_PCI_DEVICE(0x0894, 0x0422, iwl105_bgn_cfg)},
 250         {IWL_PCI_DEVICE(0x0894, 0x0822, iwl105_bgn_d_cfg)},
 251
 252 /* 135 Series */
 253         {IWL_PCI_DEVICE(0x0892, 0x0062, iwl135_bgn_cfg)},
 254         {IWL_PCI_DEVICE(0x0893, 0x0262, iwl135_bgn_cfg)},
 255         {IWL_PCI_DEVICE(0x0892, 0x0462, iwl135_bgn_cfg)},
 256
 257         {0}
 258 };
 259 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
 260
 261 /* PCI registers */
 262 #define PCI_CFG_RETRY_TIMEOUT   0x041
 263
 264 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 265 {
 266         const struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
 267         struct iwl_shared *shrd;
 268         struct iwl_trans *iwl_trans;
 269         int err;
 270
 271         shrd = kzalloc(sizeof(*iwl_trans->shrd), GFP_KERNEL);
 272         if (!shrd) {
 273                 dev_printk(KERN_ERR, &pdev->dev,
 274                            "Couldn't allocate iwl_shared");
 275                 err = -ENOMEM;
 276                 goto out_free_bus;
 277         }
 278
 279 #ifdef CONFIG_IWLWIFI_IDI
 280         iwl_trans = iwl_trans_idi_alloc(shrd, pdev, ent);
 281 #else
 282         iwl_trans = iwl_trans_pcie_alloc(shrd, pdev, ent);
 283 #endif
 284         if (iwl_trans == NULL) {
 285                 err = -ENOMEM;
 286                 goto out_free_bus;
 287         }
 288
 289         shrd->trans = iwl_trans;
 290         pci_set_drvdata(pdev, iwl_trans);
 291
 292         err = iwl_drv_start(shrd, iwl_trans, cfg);
 293         if (err)
 294                 goto out_free_trans;
 295
 296         return 0;
 297
 298 out_free_trans:
 299         iwl_trans_free(iwl_trans);
 300         pci_set_drvdata(pdev, NULL);
 301 out_free_bus:
 302         kfree(shrd);
 303         return err;
 304 }
 305
 306 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
 307 {
 308         struct iwl_trans *iwl_trans = pci_get_drvdata(pdev);
 309         struct iwl_shared *shrd = iwl_trans->shrd;
 310
 311         iwl_drv_stop(shrd);
 312         iwl_trans_free(shrd->trans);
 313
 314         pci_set_drvdata(pdev, NULL);
 315
 316         kfree(shrd);
 317 }
 318
 319 #ifdef CONFIG_PM_SLEEP
 320
 321 static int iwl_pci_suspend(struct device *device)
 322 {
 323         struct pci_dev *pdev = to_pci_dev(device);
 324         struct iwl_trans *iwl_trans = pci_get_drvdata(pdev);
 325
 326         /* Before you put code here, think about WoWLAN. You cannot check here
 327          * whether WoWLAN is enabled or not, and your code will run even if
 328          * WoWLAN is enabled - don't kill the NIC, someone may need it in Sx.
 329          */
 330
 331         return iwl_trans_suspend(iwl_trans);
 332 }
 333
 334 static int iwl_pci_resume(struct device *device)
 335 {
 336         struct pci_dev *pdev = to_pci_dev(device);
 337         struct iwl_trans *iwl_trans = pci_get_drvdata(pdev);
 338
 339         /* Before you put code here, think about WoWLAN. You cannot check here
 340          * whether WoWLAN is enabled or not, and your code will run even if
 341          * WoWLAN is enabled - the NIC may be alive.
 342          */
 343
 344         /*
 345          * We disable the RETRY_TIMEOUT register (0x41) to keep
 346          * PCI Tx retries from interfering with C3 CPU state.
 347          */
 348         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
 349
 350         return iwl_trans_resume(iwl_trans);
 351 }
 352
 353 static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume);
 354
 355 #define IWL_PM_OPS      (&iwl_dev_pm_ops)
 356
 357 #else
 358
 359 #define IWL_PM_OPS      NULL
 360
 361 #endif
 362
 363 static struct pci_driver iwl_pci_driver = {
 364         .name = DRV_NAME,
 365         .id_table = iwl_hw_card_ids,
 366         .probe = iwl_pci_probe,
 367         .remove = __devexit_p(iwl_pci_remove),
 368         .driver.pm = IWL_PM_OPS,
 369 };
 370
 371 int __must_check iwl_pci_register_driver(void)
 372 {
 373         int ret;
 374         ret = pci_register_driver(&iwl_pci_driver);
 375         if (ret)
 376                 pr_err("Unable to initialize PCI module\n");
 377
 378         return ret;
 379 }
 380
 381 void iwl_pci_unregister_driver(void)
 382 {
 383         pci_unregister_driver(&iwl_pci_driver);
 384 }