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authorJerry Snitselaar <[email protected]>2019-09-02 07:27:35 -0700
committerJarkko Sakkinen <[email protected]>2019-11-12 21:45:36 +0200
commit5af4f1d5cb4dc875db4bf678c7168c3cc02e3afa (patch)
tree6d0cce2452b16557e5eedbb27ce6924ce64f4875 /scripts/gdb/linux/utils.py
parent15d0b22c01e6320241fe4d570e02de2935b842bf (diff)
tpm_tis: override durations for STM tpm with firmware 1.2.8.28
There was revealed a bug in the STM TPM chipset used in Dell R415s. Bug is observed so far only on chipset firmware 1.2.8.28 (1.2 TPM, device-id 0x0, rev-id 78). After some number of operations chipset hangs and stays in inconsistent state: tpm_tis 00:09: Operation Timed out tpm_tis 00:09: tpm_transmit: tpm_send: error -5 Durations returned by the chip are the same like on other firmware revisions but apparently with specifically 1.2.8.28 fw durations should be reset to 2 minutes to enable tpm chip work properly. No working way of updating firmware was found. This patch adds implementation of ->update_durations method that matches only STM devices with specific firmware version. Cc: Peter Huewe <[email protected]> Cc: Jarkko Sakkinen <[email protected]> Cc: Jason Gunthorpe <[email protected]> Signed-off-by: Alexey Klimov <[email protected]> Signed-off-by: Jerry Snitselaar <[email protected]> Reviewed-by: Jarkko Sakkinen <[email protected]> Tested-by: Jarkko Sakkinen <[email protected]> (!update_durations path) Signed-off-by: Jarkko Sakkinen <[email protected]> (!update_durations path)
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