linux-kernel - [PATCH -next] efi/tpm: fix a compilation warning

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Message-Id: <20190611125904.1013-1-cai@lca.pw>
Date:   Tue, 11 Jun 2019 08:59:04 -0400
From:   Qian Cai <cai@....pw>
To:     ard.biesheuvel@...aro.org
Cc:     mjg59@...gle.com, linux-efi@...r.kernel.org, bsz@...ihalf.com,
        jarkko.sakkinen@...ux.intel.com, linux-kernel@...r.kernel.org,
        Qian Cai <cai@....pw>
Subject: [PATCH -next] efi/tpm: fix a compilation warning

The linux-next "tpm: Reserve the TPM final events table" [1] introduced
a compilation warning,

drivers/firmware/efi/tpm.c: In function 'efi_tpm_eventlog_init':
drivers/firmware/efi/tpm.c:80:10: warning: passing argument 1 of
'tpm2_calc_event_log_size' makes pointer from integer without a cast
[-Wint-conversion]
  tbl_size = tpm2_calc_event_log_size(efi.tpm_final_log
drivers/firmware/efi/tpm.c:19:43: note: expected 'void *' but argument
is of type 'long unsigned int'

Fix it by making a necessary cast for the argument 1 of
tpm2_calc_event_log_size().

[1] https://lore.kernel.org/linux-efi/20190520205501.177637-3-matthewgarrett@google.com/

Signed-off-by: Qian Cai <cai@....pw>
---
 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 74d0cd1647b8..1d3f5ca3eaaf 100644
--- a/drivers/firmware/efi/tpm.c
+++ b/drivers/firmware/efi/tpm.c
@@ -75,7 +75,7 @@ int __init efi_tpm_eventlog_init(void)
 		goto out;
 	}
 
-	tbl_size = tpm2_calc_event_log_size(efi.tpm_final_log
+	tbl_size = tpm2_calc_event_log_size((void *)efi.tpm_final_log
 					    + sizeof(final_tbl->version)
 					    + sizeof(final_tbl->nr_events),
 					    final_tbl->nr_events,
-- 
2.20.1 (Apple Git-117)