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path: root/drivers/base/firmware_loader/fallback_table.c
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Diffstat (limited to 'drivers/base/firmware_loader/fallback_table.c')
-rw-r--r--drivers/base/firmware_loader/fallback_table.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c
new file mode 100644
index 000000000..e5ac098d0
--- /dev/null
+++ b/drivers/base/firmware_loader/fallback_table.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/types.h>
+#include <linux/kconfig.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <linux/security.h>
+#include <linux/highmem.h>
+#include <linux/umh.h>
+#include <linux/sysctl.h>
+
+#include "fallback.h"
+#include "firmware.h"
+
+/*
+ * firmware fallback configuration table
+ */
+
+struct firmware_fallback_config fw_fallback_config = {
+ .force_sysfs_fallback = IS_ENABLED(CONFIG_FW_LOADER_USER_HELPER_FALLBACK),
+ .loading_timeout = 60,
+ .old_timeout = 60,
+};
+EXPORT_SYMBOL_NS_GPL(fw_fallback_config, FIRMWARE_LOADER_PRIVATE);
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table firmware_config_table[] = {
+ {
+ .procname = "force_sysfs_fallback",
+ .data = &fw_fallback_config.force_sysfs_fallback,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_douintvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "ignore_sysfs_fallback",
+ .data = &fw_fallback_config.ignore_sysfs_fallback,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = proc_douintvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ { }
+};
+
+static struct ctl_table_header *firmware_config_sysct_table_header;
+int register_firmware_config_sysctl(void)
+{
+ firmware_config_sysct_table_header =
+ register_sysctl("kernel/firmware_config",
+ firmware_config_table);
+ if (!firmware_config_sysct_table_header)
+ return -ENOMEM;
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(register_firmware_config_sysctl, FIRMWARE_LOADER_PRIVATE);
+
+void unregister_firmware_config_sysctl(void)
+{
+ unregister_sysctl_table(firmware_config_sysct_table_header);
+ firmware_config_sysct_table_header = NULL;
+}
+EXPORT_SYMBOL_NS_GPL(unregister_firmware_config_sysctl, FIRMWARE_LOADER_PRIVATE);
+
+#endif /* CONFIG_SYSCTL */