[SCSI] Add scsi_dev_info_list_del_keyed()
For scsi_dh.c to use devinfo lists, we have to be able to remove entries
before rmmod.
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 43fad4c..82e9e5c 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -382,6 +382,91 @@
EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
/**
+ * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
+ * @vendor: vendor string
+ * @model: model (product) string
+ * @key: specify list to use
+ *
+ * Description:
+ * Remove and destroy one dev_info entry for @vendor, @model
+ * in list specified by @key.
+ *
+ * Returns: 0 OK, -error on failure.
+ **/
+int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
+{
+ struct scsi_dev_info_list *devinfo, *found = NULL;
+ struct scsi_dev_info_list_table *devinfo_table =
+ scsi_devinfo_lookup_by_key(key);
+
+ if (IS_ERR(devinfo_table))
+ return PTR_ERR(devinfo_table);
+
+ list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
+ dev_info_list) {
+ if (devinfo->compatible) {
+ /*
+ * Behave like the older version of get_device_flags.
+ */
+ size_t max;
+ /*
+ * XXX why skip leading spaces? If an odd INQUIRY
+ * value, that should have been part of the
+ * scsi_static_device_list[] entry, such as " FOO"
+ * rather than "FOO". Since this code is already
+ * here, and we don't know what device it is
+ * trying to work with, leave it as-is.
+ */
+ max = 8; /* max length of vendor */
+ while ((max > 0) && *vendor == ' ') {
+ max--;
+ vendor++;
+ }
+ /*
+ * XXX removing the following strlen() would be
+ * good, using it means that for a an entry not in
+ * the list, we scan every byte of every vendor
+ * listed in scsi_static_device_list[], and never match
+ * a single one (and still have to compare at
+ * least the first byte of each vendor).
+ */
+ if (memcmp(devinfo->vendor, vendor,
+ min(max, strlen(devinfo->vendor))))
+ continue;
+ /*
+ * Skip spaces again.
+ */
+ max = 16; /* max length of model */
+ while ((max > 0) && *model == ' ') {
+ max--;
+ model++;
+ }
+ if (memcmp(devinfo->model, model,
+ min(max, strlen(devinfo->model))))
+ continue;
+ found = devinfo;
+ } else {
+ if (!memcmp(devinfo->vendor, vendor,
+ sizeof(devinfo->vendor)) &&
+ !memcmp(devinfo->model, model,
+ sizeof(devinfo->model)))
+ found = devinfo;
+ }
+ if (found)
+ break;
+ }
+
+ if (found) {
+ list_del(&found->dev_info_list);
+ kfree(found);
+ return 0;
+ }
+
+ return -ENOENT;
+}
+EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
+
+/**
* scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
* @dev_list: string of device flags to add
*