Commit e7b7af6e authored by Roland Dreier's avatar Roland Dreier Committed by Nicholas Bellinger

target: Fix target_core_register_fabric() for built-in fabric modules

If we try to create a fabric directory in configfs for one of the
default hard-coded fabric modules (iscsi and loopback), and that
fabric is actually built into the kernel, then the operation will
spuriously fail because request_module() (for the code that's already
linked into the kernel) fails.

Fix this by running the autoprobing code only if an initial
target_core_get_fabric() fails.
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent b1a5ad00
......@@ -126,6 +126,12 @@ static struct config_group *target_core_register_fabric(
pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
" %s\n", group, name);
tf = target_core_get_fabric(name);
if (!tf) {
pr_err("target_core_register_fabric() trying autoload for %s\n",
name);
/*
* Below are some hardcoded request_module() calls to automatically
* local fabric modules when the following is called:
......@@ -136,6 +142,7 @@ static struct config_group *target_core_register_fabric(
* registered, but simply provids auto loading logic for modules with
* mkdir(2) system calls with known TCM fabric modules.
*/
if (!strncmp(name, "iscsi", 5)) {
/*
* Automatically load the LIO Target fabric module when the
......@@ -165,6 +172,8 @@ static struct config_group *target_core_register_fabric(
}
tf = target_core_get_fabric(name);
}
if (!tf) {
pr_err("target_core_get_fabric() failed for %s\n",
name);
......
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