| .. | .. |
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| 29 | 29 | MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver"); |
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| 30 | 30 | |
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| 31 | 31 | static struct iucv_path *smsg_path; |
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| 32 | | -/* dummy device used as trigger for PM functions */ |
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| 33 | | -static struct device *smsg_dev; |
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| 34 | 32 | |
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| 35 | 33 | static DEFINE_SPINLOCK(smsg_list_lock); |
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| 36 | 34 | static LIST_HEAD(smsg_list); |
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| 37 | | -static int iucv_path_connected; |
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| 38 | 35 | |
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| 39 | 36 | static int smsg_path_pending(struct iucv_path *, u8 *, u8 *); |
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| 40 | 37 | static void smsg_message_pending(struct iucv_path *, struct iucv_message *); |
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| .. | .. |
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| 124 | 121 | kfree(cb); |
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| 125 | 122 | } |
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| 126 | 123 | |
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| 127 | | -static int smsg_pm_freeze(struct device *dev) |
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| 128 | | -{ |
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| 129 | | -#ifdef CONFIG_PM_DEBUG |
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| 130 | | - printk(KERN_WARNING "smsg_pm_freeze\n"); |
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| 131 | | -#endif |
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| 132 | | - if (smsg_path && iucv_path_connected) { |
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| 133 | | - iucv_path_sever(smsg_path, NULL); |
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| 134 | | - iucv_path_connected = 0; |
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| 135 | | - } |
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| 136 | | - return 0; |
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| 137 | | -} |
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| 138 | | - |
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| 139 | | -static int smsg_pm_restore_thaw(struct device *dev) |
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| 140 | | -{ |
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| 141 | | - int rc; |
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| 142 | | - |
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| 143 | | -#ifdef CONFIG_PM_DEBUG |
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| 144 | | - printk(KERN_WARNING "smsg_pm_restore_thaw\n"); |
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| 145 | | -#endif |
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| 146 | | - if (smsg_path && !iucv_path_connected) { |
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| 147 | | - memset(smsg_path, 0, sizeof(*smsg_path)); |
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| 148 | | - smsg_path->msglim = 255; |
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| 149 | | - smsg_path->flags = 0; |
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| 150 | | - rc = iucv_path_connect(smsg_path, &smsg_handler, "*MSG ", |
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| 151 | | - NULL, NULL, NULL); |
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| 152 | | -#ifdef CONFIG_PM_DEBUG |
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| 153 | | - if (rc) |
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| 154 | | - printk(KERN_ERR |
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| 155 | | - "iucv_path_connect returned with rc %i\n", rc); |
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| 156 | | -#endif |
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| 157 | | - if (!rc) |
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| 158 | | - iucv_path_connected = 1; |
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| 159 | | - cpcmd("SET SMSG IUCV", NULL, 0, NULL); |
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| 160 | | - } |
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| 161 | | - return 0; |
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| 162 | | -} |
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| 163 | | - |
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| 164 | | -static const struct dev_pm_ops smsg_pm_ops = { |
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| 165 | | - .freeze = smsg_pm_freeze, |
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| 166 | | - .thaw = smsg_pm_restore_thaw, |
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| 167 | | - .restore = smsg_pm_restore_thaw, |
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| 168 | | -}; |
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| 169 | | - |
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| 170 | 124 | static struct device_driver smsg_driver = { |
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| 171 | 125 | .owner = THIS_MODULE, |
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| 172 | 126 | .name = SMSGIUCV_DRV_NAME, |
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| 173 | 127 | .bus = &iucv_bus, |
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| 174 | | - .pm = &smsg_pm_ops, |
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| 175 | 128 | }; |
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| 176 | 129 | |
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| 177 | 130 | static void __exit smsg_exit(void) |
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| 178 | 131 | { |
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| 179 | 132 | cpcmd("SET SMSG OFF", NULL, 0, NULL); |
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| 180 | | - device_unregister(smsg_dev); |
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| 181 | 133 | iucv_unregister(&smsg_handler, 1); |
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| 182 | 134 | driver_unregister(&smsg_driver); |
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| 183 | 135 | } |
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| .. | .. |
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| 205 | 157 | NULL, NULL, NULL); |
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| 206 | 158 | if (rc) |
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| 207 | 159 | goto out_free_path; |
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| 208 | | - else |
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| 209 | | - iucv_path_connected = 1; |
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| 210 | | - smsg_dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
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| 211 | | - if (!smsg_dev) { |
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| 212 | | - rc = -ENOMEM; |
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| 213 | | - goto out_free_path; |
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| 214 | | - } |
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| 215 | | - dev_set_name(smsg_dev, "smsg_iucv"); |
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| 216 | | - smsg_dev->bus = &iucv_bus; |
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| 217 | | - smsg_dev->parent = iucv_root; |
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| 218 | | - smsg_dev->release = (void (*)(struct device *))kfree; |
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| 219 | | - smsg_dev->driver = &smsg_driver; |
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| 220 | | - rc = device_register(smsg_dev); |
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| 221 | | - if (rc) |
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| 222 | | - goto out_put; |
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| 223 | 160 | |
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| 224 | 161 | cpcmd("SET SMSG IUCV", NULL, 0, NULL); |
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| 225 | 162 | return 0; |
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| 226 | 163 | |
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| 227 | | -out_put: |
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| 228 | | - put_device(smsg_dev); |
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| 229 | 164 | out_free_path: |
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| 230 | 165 | iucv_path_free(smsg_path); |
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| 231 | 166 | smsg_path = NULL; |
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