From 4bfacee94f309346bef0b598ea091088b9150af9 Mon Sep 17 00:00:00 2001 From: Karl Mehltretter Date: Sun, 12 Jul 2026 20:32:34 +0200 Subject: [PATCH] tpm: atmel: depend on X86 tpm_atmel probes for the chip at fixed x86 Super-I/O ports (0x4e) with inb()/outb(), so it only works on x86. TCG_ATMEL nevertheless depends only on HAS_IOPORT_MAP/HAS_IOPORT, which arm and arm64 also satisfy. There the probe is useless, and on platforms whose unbacked I/O access faults it oopses in init_atmel() at boot (e.g. arm/versatile): Unable to handle kernel paging request at virtual address fee0004e PC is at init_atmel+0x34/0x244 TCG_NSC and TCG_TIS already "depends on X86" (commit 2f592f2a7d74 ("TPM: NSC and TIS drivers X86 dependency fix")); TCG_ATMEL was missed. Add the same dependency. Signed-off-by: Karl Mehltretter Reviewed-by: Jarkko Sakkinen Link: https://lore.kernel.org/r/20260712183234.23125-1-kmehltretter@gmail.com Signed-off-by: Jarkko Sakkinen --- drivers/char/tpm/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig index 8a8f692b6088..5f672f2c01b0 100644 --- a/drivers/char/tpm/Kconfig +++ b/drivers/char/tpm/Kconfig @@ -163,8 +163,7 @@ config TCG_NSC config TCG_ATMEL tristate "Atmel TPM Interface" - depends on HAS_IOPORT_MAP - depends on HAS_IOPORT + depends on X86 help If you have a TPM security chip from Atmel say Yes and it will be accessible from within Linux. To compile this driver