From: Ji-Hun Kim <ji_hun.kim@samsung.com>
Date: Wed, 9 May 2018 00:12:36 +0000 (+0900)
Subject: tpm: replace kmalloc() + memcpy() with kmemdup()
X-Git-Tag: v4.18-rc1~99^2~1^2~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=697989164ef699a01012490fa2dd1970b17828e6;p=linux.git

tpm: replace kmalloc() + memcpy() with kmemdup()

Use kmemdup rather than duplicating its implementation.

Signed-off-by: Ji-Hun Kim <ji_hun.kim@samsung.com>
Reviewed-by: James Morris <james.morris@microsoft.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---

diff --git a/drivers/char/tpm/eventlog/of.c b/drivers/char/tpm/eventlog/of.c
index b7cac4794ed2..bba5fba6cb3b 100644
--- a/drivers/char/tpm/eventlog/of.c
+++ b/drivers/char/tpm/eventlog/of.c
@@ -69,14 +69,12 @@ int tpm_read_log_of(struct tpm_chip *chip)
 		return -EIO;
 	}
 
-	log->bios_event_log = kmalloc(size, GFP_KERNEL);
+	log->bios_event_log = kmemdup(__va(base), size, GFP_KERNEL);
 	if (!log->bios_event_log)
 		return -ENOMEM;
 
 	log->bios_event_log_end = log->bios_event_log + size;
 
-	memcpy(log->bios_event_log, __va(base), size);
-
 	if (chip->flags & TPM_CHIP_FLAG_TPM2)
 		return EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;
 	return EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2;