Commit c0dff1f4 authored Apr 25, 2016 by Jarkko Sakkinen

tpm: check for TPM_CHIP_FLAG_TPM2 before calling tpm2_shutdown()



Fixes: 20e0152393b41 ("tpm: fix crash in tpm_tis deinitialization")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reported-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>

parent 422eac3f

drivers/char/tpm/tpm-chip.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -269,6 +269,7 @@ static void tpm_del_char_device(struct tpm_chip *chip)

		/* Make the driver uncallable. */
		down_write(&chip->ops_sem);
		if (chip->flags & TPM_CHIP_FLAG_TPM2)
		tpm2_shutdown(chip, TPM2_SU_CLEAR);
		chip->ops = NULL;
		up_write(&chip->ops_sem);