Re: [PATCH] efi/tpm: fix section mismatch warning

From: Jerry Snitselaar
Date: Thu Apr 30 2020 - 17:15:26 EST


On Wed Apr 29 20, Arnd Bergmann wrote:
Building with gcc-10 causes a harmless warning about a section mismatch:

WARNING: modpost: vmlinux.o(.text.unlikely+0x5e191): Section mismatch in reference from the function tpm2_calc_event_log_size() to the function .init.text:early_memunmap()
The function tpm2_calc_event_log_size() references
the function __init early_memunmap().
This is often because tpm2_calc_event_log_size lacks a __init
annotation or the annotation of early_memunmap is wrong.

Add the missing annotation.

Fixes: e658c82be556 ("efi/tpm: Only set 'efi_tpm_final_log_size' after successful event log parsing")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Minor thing, but should the Fixes be c46f3405692d ("tpm: Reserve the TPM final events table")? Or what am I missing
about e658c82be556 that causes this? Just trying to understand what I did. :)

Regards,
Jerry

---
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 31f9f0e369b9..55b031d2c989 100644
--- a/drivers/firmware/efi/tpm.c
+++ b/drivers/firmware/efi/tpm.c
@@ -16,7 +16,7 @@
int efi_tpm_final_log_size;
EXPORT_SYMBOL(efi_tpm_final_log_size);

-static int tpm2_calc_event_log_size(void *data, int count, void *size_info)
+static int __init tpm2_calc_event_log_size(void *data, int count, void *size_info)
{
struct tcg_pcr_event2_head *header;
int event_size, size = 0;
--
2.26.0