[PATCH][next] efi/tpm: fix sanity check of unsigned tbl_size being less than zero

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

Currently the check for tbl_size being less than zero is always false
because tbl_size is unsigned. Fix this by making it a signed int.

Addresses-Coverity: ("Unsigned compared against 0")
Fixes: e658c82be556 ("efi/tpm: Only set 'efi_tpm_final_log_size' after 
successful event log parsing")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 drivers/firmware/efi/tpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/tpm.c b/drivers/firmware/efi/tpm.c
index 703469c1ab8e..ebd7977653a8 100644
--- a/drivers/firmware/efi/tpm.c
+++ b/drivers/firmware/efi/tpm.c
@@ -40,7 +40,7 @@ int __init efi_tpm_eventlog_init(void)
 {
        struct linux_efi_tpm_eventlog *log_tbl;
        struct efi_tcg2_final_events_table *final_tbl;
-       unsigned int tbl_size;
+       int tbl_size;
        int ret = 0;
 
        if (efi.tpm_log == EFI_INVALID_TABLE_ADDR) {
-- 
2.20.1