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tpm/tpm_tis: Add missing ifdef CONFIG_ACPI for pnp_acpi_device 

This fixes a build failure if CONFIG_PNP is set but CONFIG_ACPI is not:
drivers/char/tpm/tpm_tis.c: In function ?tpm_tis_pnp_init?:
drivers/char/tpm/tpm_tis.c:912:45: error: invalid type argument of
?->? (have ?int?)
   acpi_dev_handle = pnp_acpi_device(pnp_dev)->handle;

If CONFIG_PNPACPI is not set pnp_acpi_device is defined as 0 and thus
accesing the handle is not possible.

Fixes: 0dc5536521 ("tpm: fix raciness of PPI interface lookup")
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: James Morris <james.l.morris@oracle.com>
This commit is contained in:
Peter Huewe 2015-01-22 00:42:50 +01:00 committed by James Morris
parent 9d5a5f65fc
commit 961be7ef69
1 changed files with 2 additions and 0 deletions
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2
drivers/char/tpm/tpm_tis.c
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@ -908,8 +908,10 @@ static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
if (is_itpm(pnp_dev))
itpm = true;
#ifdef CONFIG_ACPI
if (pnp_acpi_device(pnp_dev))
acpi_dev_handle = pnp_acpi_device(pnp_dev)->handle;
#endif
return tpm_tis_init(&pnp_dev->dev, acpi_dev_handle, start, len, irq);
}