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authorJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2014-12-12 22:46:34 +0300
committerPeter Huewe <peterhuewe@gmx.de>2015-01-17 16:00:09 +0300
commitafb5abc262e962089ef2d7c2bbf71bb6f53a2a78 (patch)
tree5e59c2de94a0f083634e5ead5cf46c34df79eace /drivers/char/tpm/Makefile
parent87155b7311bfec75b590b823b11f77adf2a16412 (diff)
downloadlinux-afb5abc262e962089ef2d7c2bbf71bb6f53a2a78.tar.xz
tpm: two-phase chip management functions
tpm_register_hardware() and tpm_remove_hardware() are called often before initializing the device. The problem is that the device might not be fully initialized when it comes visible to the user space. This patch resolves the issue by diving initialization into two parts: - tpmm_chip_alloc() creates struct tpm_chip. - tpm_chip_register() sets up the character device and sysfs attributes. The framework takes care of freeing struct tpm_chip by using the devres API. The broken release callback has been wiped. ACPI drivers do not ever get this callback. Regards to Jason Gunthorpe for carefully reviewing this part of the code. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: Jasob Gunthorpe <jason.gunthorpe@obsidianresearch.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Tested-by: Scot Doyle <lkml14@scotdoyle.com> Tested-by: Peter Huewe <peterhuewe@gmx.de> [phuewe: update to upstream changes] Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Diffstat (limited to 'drivers/char/tpm/Makefile')
-rw-r--r--drivers/char/tpm/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/tpm/Makefile b/drivers/char/tpm/Makefile
index 7f54dae847e4..c715596acb7c 100644
--- a/drivers/char/tpm/Makefile
+++ b/drivers/char/tpm/Makefile
@@ -2,7 +2,7 @@
# Makefile for the kernel tpm device drivers.
#
obj-$(CONFIG_TCG_TPM) += tpm.o
-tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o
+tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o tpm-chip.o
tpm-$(CONFIG_ACPI) += tpm_ppi.o
ifdef CONFIG_ACPI