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Subject[PATCH] x86/platform/uv: avoid unused variable warning
Date
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>
---
arch/x86/kernel/apic/x2apic_uv_x.c | 28 ++++------------------------
1 file changed, 4 insertions(+), 24 deletions(-)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index d5b51a740524..1af416da1f87 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1493,13 +1493,13 @@ 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;
@@ -1511,28 +1511,11 @@ static int proc_oemid_show(struct seq_file *file, void *data)
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,
@@ -1543,15 +1526,12 @@ static const struct file_operations proc_oemid_fops = {
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);
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 */
--
2.20.0
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