x86/apic/uv: Avoid unused variable warning

When CONFIG_PROC_FS is disabled, the compiler warns about an unused
variable:

arch/x86/kernel/apic/x2apic_uv_x.c: In function 'uv_setup_proc_files':
arch/x86/kernel/apic/x2apic_uv_x.c:1546:8: error: unused variable 'name' [-Werror=unused-variable]
  char *name = hubless ? "hubless" : "hubbed";

Simplify the code so this variable is no longer needed.

Fixes: 8785968bce1c ("x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191212140419.315264-1-arnd@arndb.de

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index d5b51a7..ad53b2a 100644 (file)
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1493,65 +1493,34 @@ static void check_efi_reboot(void)
 }
 
 /* Setup user proc fs files */
-static int proc_hubbed_show(struct seq_file *file, void *data)
+static int __maybe_unused proc_hubbed_show(struct seq_file *file, void *data)
 {
        seq_printf(file, "0x%x\n", uv_hubbed_system);
        return 0;
 }
 
-static int proc_hubless_show(struct seq_file *file, void *data)
+static int __maybe_unused proc_hubless_show(struct seq_file *file, void *data)
 {
        seq_printf(file, "0x%x\n", uv_hubless_system);
        return 0;
 }
 
-static int proc_oemid_show(struct seq_file *file, void *data)
+static int __maybe_unused proc_oemid_show(struct seq_file *file, void *data)
 {
        seq_printf(file, "%s/%s\n", oem_id, oem_table_id);
        return 0;
 }
 
-static int proc_hubbed_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, proc_hubbed_show, (void *)NULL);
-}
-
-static int proc_hubless_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, proc_hubless_show, (void *)NULL);
-}
-
-static int proc_oemid_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, proc_oemid_show, (void *)NULL);
-}
-
-/* (struct is "non-const" as open function is set at runtime) */
-static struct file_operations proc_version_fops = {
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
-
-static const struct file_operations proc_oemid_fops = {
-       .open           = proc_oemid_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
-
 static __init void uv_setup_proc_files(int hubless)
 {
        struct proc_dir_entry *pde;
-       char *name = hubless ? "hubless" : "hubbed";
 
        pde = proc_mkdir(UV_PROC_NODE, NULL);
-       proc_create("oemid", 0, pde, &proc_oemid_fops);
-       proc_create(name, 0, pde, &proc_version_fops);
+       proc_create_single("oemid", 0, pde, proc_oemid_show);
        if (hubless)
-               proc_version_fops.open = proc_hubless_open;
+               proc_create_single("hubless", 0, pde, proc_hubless_show);
        else
-               proc_version_fops.open = proc_hubbed_open;
+               proc_create_single("hubbed", 0, pde, proc_hubbed_show);
 }
 
 /* Initialize UV hubless systems */