linux-kernel - [PATCH] firmware_loader: fix build without sysctl

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Date:   Fri, 31 May 2019 03:26:49 +0200
From:   Matteo Croce <mcroce@...hat.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Randy Dunlap <rdunlap@...radead.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] firmware_loader: fix build without sysctl

firmware_config_table has references to the sysctl code which
triggers a build failure when CONFIG_PROC_SYSCTL is not set:

    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x30): undefined reference to `sysctl_vals'
    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x38): undefined reference to `sysctl_vals'
    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x70): undefined reference to `sysctl_vals'
    ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x78): undefined reference to `sysctl_vals'

Put the firmware_config_table struct under #ifdef CONFIG_PROC_SYSCTL.

Fixes: 6a33853c5773 ("proc/sysctl: add shared variables for range check")
Reported-by: Randy Dunlap <rdunlap@...radead.org>
Signed-off-by: Matteo Croce <mcroce@...hat.com>
---
 drivers/base/firmware_loader/fallback_table.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c
index 58d4a1263480..18d646777fb9 100644
--- a/drivers/base/firmware_loader/fallback_table.c
+++ b/drivers/base/firmware_loader/fallback_table.c
@@ -23,6 +23,8 @@ struct firmware_fallback_config fw_fallback_config = {
 };
 EXPORT_SYMBOL_GPL(fw_fallback_config);
 
+#ifdef CONFIG_PROC_SYSCTL
+
 struct ctl_table firmware_config_table[] = {
 	{
 		.procname	= "force_sysfs_fallback",
@@ -45,3 +47,5 @@ struct ctl_table firmware_config_table[] = {
 	{ }
 };
 EXPORT_SYMBOL_GPL(firmware_config_table);
+
+#endif
-- 
2.21.0