From mboxrd@z Thu Jan 1 00:00:00 1970 From: greg@kroah.com (Greg KH) Date: Sat, 15 Apr 2017 22:50:32 +0200 Subject: [backport v4.9] tpm_tis: use default timeout value if chip reports it as zero In-Reply-To: <20170415152622.14451-1-user@jsakkine-mobl1> References: <20170415152622.14451-1-user@jsakkine-mobl1> Message-ID: <20170415205032.GA17774@kroah.com> To: linux-security-module@vger.kernel.org List-Id: linux-security-module.vger.kernel.org On Sat, Apr 15, 2017 at 06:26:22PM +0300, Jarkko Sakkinen wrote: > From: "Maciej S. Szmigiero" > > Since commit 1107d065fdf1 ("tpm_tis: Introduce intermediate layer for > TPM access") Atmel 3203 TPM on ThinkPad X61S (TPM firmware version 13.9) > no longer works. The initialization proceeds fine until we get and > start using chip-reported timeouts - and the chip reports C and D > timeouts of zero. > > It turns out that until commit 8e54caf407b98e ("tpm: Provide a generic > means to override the chip returned timeouts") we had actually let > default timeout values remain in this case, so let's bring back this > behavior to make chips like Atmel 3203 work again. > > Use a common code that was introduced by that commit so a warning is > printed in this case and /sys/class/tpm/tpm*/timeouts correctly says the > timeouts aren't chip-original. > > Fixes: 1107d065fdf1 ("tpm_tis: Introduce intermediate layer for TPM access") > Cc: stable at vger.kernel.org > Signed-off-by: Maciej S. Szmigiero > Reviewed-by: Jarkko Sakkinen > Signed-off-by: Jarkko Sakkinen What is the git commit id for this patch in Linus's tree? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html