From aff374dfe7330be10a20c97bd0b3196c153e9f9e Mon Sep 17 00:00:00 2001
From: Gaurav Singh <gaurav1086@gmail.com>
Date: Tue, 23 Jun 2020 23:31:25 -0400
Subject: [PATCH] platform/x86: intel_pmc_core: fix bound check in pmc_core_mphy_pg_show()
Git-commit: aff374dfe7330be10a20c97bd0b3196c153e9f9e
Patch-mainline: v5.9-rc1
References: jsc#SLE-13387
Check bounds before accessing map[] array.
Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/platform/x86/intel_pmc_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index 5a0a25e9ccc9..338ea5222555 100644
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -795,7 +795,7 @@ static int pmc_core_mphy_pg_show(struct seq_file *s, void *unused)
msleep(10);
val_high = pmc_core_reg_read(pmcdev, SPT_PMC_MFPMC_OFFSET);
- for (index = 0; map[index].name && index < 8; index++) {
+ for (index = 0; index < 8 && map[index].name; index++) {
seq_printf(s, "%-32s\tState: %s\n",
map[index].name,
map[index].bit_mask & val_low ? "Not power gated" :
--
2.16.4