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authorOlof Johansson <olof@lixom.net>2011-01-06 21:24:01 -0600
committerJames Morris <jmorris@namei.org>2011-01-24 11:29:55 +1100
commite5cce6c13c25d9ac56955a3ae2fd562719848172 (patch)
tree29ed2e65da52bda2d16a77425102f3a8813fcef1 /drivers/char
parentc4ff4b829ef9e6353c0b133b7adb564a68054979 (diff)
downloadlinux-linaro-android-e5cce6c13c25d9ac56955a3ae2fd562719848172.tar.gz
tpm: fix panic caused by "tpm: Autodetect itpm devices"
commit 3f0d3d016d89a5efb8b926d4707eb21fa13f3d27 adds a check for PNP device id to the common tpm_tis_init() function, which in some cases (force=1) will be called without the device being a member of a pnp_dev. Oopsing and panics ensue. Move the test up to before the call to tpm_tis_init(), since it just modifies a global variable anyway. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/tpm/tpm_tis.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index c17a305ecb2..dd21df55689 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -493,9 +493,6 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
"1.2 TPM (device-id 0x%X, rev-id %d)\n",
vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
- if (is_itpm(to_pnp_dev(dev)))
- itpm = 1;
-
if (itpm)
dev_info(dev, "Intel iTPM workaround enabled\n");
@@ -637,6 +634,9 @@ static int __devinit tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
else
interrupts = 0;
+ if (is_itpm(pnp_dev))
+ itpm = 1;
+
return tpm_tis_init(&pnp_dev->dev, start, len, irq);
}