The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From b9d0a85d6b2e76630cfd4c475ee3af4109bfd87a Mon Sep 17 00:00:00 2001
From: Yue Haibing yuehaibing@huawei.com Date: Wed, 20 Feb 2019 16:25:38 +0800 Subject: [PATCH] tpm: Fix the type of the return value in calc_tpm2_event_size()
calc_tpm2_event_size() has an invalid signature because it returns a 'size_t' where as its signature says that it returns 'int'.
Cc: stable@vger.kernel.org Fixes: 4d23cc323cdb ("tpm: add securityfs support for TPM 2.0 firmware event log") Suggested-by: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Signed-off-by: Yue Haibing yuehaibing@huawei.com Reviewed-by: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Signed-off-by: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Signed-off-by: James Morris james.morris@microsoft.com
diff --git a/drivers/char/tpm/eventlog/tpm2.c b/drivers/char/tpm/eventlog/tpm2.c index d8b77133a83a..f824563fc28d 100644 --- a/drivers/char/tpm/eventlog/tpm2.c +++ b/drivers/char/tpm/eventlog/tpm2.c @@ -37,8 +37,8 @@ * * Returns size of the event. If it is an invalid event, returns 0. */ -static int calc_tpm2_event_size(struct tcg_pcr_event2_head *event, - struct tcg_pcr_event *event_header) +static size_t calc_tpm2_event_size(struct tcg_pcr_event2_head *event, + struct tcg_pcr_event *event_header) { struct tcg_efi_specid_event_head *efispecid; struct tcg_event_field *event_field;