platform/x86/intel/tpmi/plr: Make char[] longer to silence warning

JIRA: https://issues.redhat.com/browse/RHEL-79669

commit 3bc0183
Author: Ilpo Järvinen <[email protected]>
Date:   Tue Dec 10 16:01:14 2024 +0200

    platform/x86/intel/tpmi/plr: Make char[] longer to silence warning

    W=1 build triggers this warning:

    drivers/platform/x86/intel/plr_tpmi.c:315:55: error: ‘snprintf’ output
    may be truncated before the last format character
    [-Werror=format-truncation=]
      315 |                 snprintf(name, sizeof(name), "domain%d", i);
          |                                                       ^
    drivers/platform/x86/intel/plr_tpmi.c:315:17: note: ‘snprintf’ output
    between 8 and 17 bytes into a destination of size 16
      315 |                 snprintf(name, sizeof(name), "domain%d", i);

    Inspecting the code tells that maximum i in intel_plr_probe() will fit
    into u8 because it comes from:

    struct intel_tpmi_pfs_entry {
            ...
            u64 num_entries:8;

    ...but compiler does not know that. Saving one byte in name[] at the
    expense of a warning with W=1 seems a bad trade so simply make it
    name[17].

    Link: https://lore.kernel.org/r/[email protected]
    Signed-off-by: Ilpo Järvinen <[email protected]>
    Reviewed-by: Ilpo Järvinen <[email protected]>

Signed-off-by: David Arcari <[email protected]>

Author: darcari

drivers/platform/x86/intel/plr_tpmi.c

@@ -262,7 +262,7 @@ static int intel_plr_probe(struct auxiliary_device *auxdev, const struct auxilia
 	struct resource *res;
 	struct tpmi_plr *plr;
 	void __iomem *base;
-	char name[16];
+	char name[17];
 	int err;
 
 	plat_info = tpmi_get_platform_data(auxdev);