diff options
| author |   Thorsten Blum <thorsten.blum@linux.dev> | 2025-02-25 14:16:19 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2025-02-25 20:50:55 +0100 |
| commit | 8e8f0306497dea58fb4e8e2558949daae5eeac5c (patch) | |
| tree | 2e8a07716bb0c1b675845676e3ce789d76a00ae1 | |
| parent | selftests/lam: Test get_user() LAM pointer handling (diff) | |
| download | wireguard-linux-8e8f0306497dea58fb4e8e2558949daae5eeac5c.tar.xz wireguard-linux-8e8f0306497dea58fb4e8e2558949daae5eeac5c.zip | |
x86/mtrr: Remove unnecessary strlen() in mtrr_write()
The local variable length already holds the string length after calling
strncpy_from_user(). Using another local variable linlen and calling
strlen() is therefore unnecessary and can be removed. Remove linlen
and strlen() and use length instead.
No change in functionality intended.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250225131621.329699-2-thorsten.blum@linux.dev
| -rw-r--r-- | arch/x86/kernel/cpu/mtrr/if.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c index a5c506f6da7f..4049235b1bfe 100644 --- a/arch/x86/kernel/cpu/mtrr/if.c +++ b/arch/x86/kernel/cpu/mtrr/if.c @@ -99,7 +99,6 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos) char *ptr; char line[LINE_SIZE]; int length; - size_t linelen; memset(line, 0, LINE_SIZE); @@ -108,9 +107,8 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos) if (length < 0) return length; - linelen = strlen(line); - ptr = line + linelen - 1; - if (linelen && *ptr == '\n') + ptr = line + length - 1; + if (length && *ptr == '\n') *ptr = '\0'; if (!strncmp(line, "disable=", 8)) { |