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[PATCH] tpm: check mem start and len

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The memory start and length values obtained from the ACPI entry need to be
checked and filled in with the default values from the specification if
they don't exist.  This patch fills in the default values and uses them
appropriately.

Signed-off-by: Kylie Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Kylene Jo Hall 2006-04-22 02:38:55 -07:00 committed by Linus Torvalds
parent e496f54054
commit b09d53009d
1 changed files with 7 additions and 0 deletions
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7
drivers/char/tpm/tpm_tis.c
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@ -52,6 +52,8 @@ enum tis_int_flags {
};
enum tis_defaults {
TIS_MEM_BASE = 0xFED4000,
TIS_MEM_LEN = 0x5000,
TIS_SHORT_TIMEOUT = 750, /* ms */
TIS_LONG_TIMEOUT = 2000, /* 2 sec */
};
@ -437,6 +439,11 @@ static int __devinit tpm_tis_pnp_init(struct pnp_dev
start = pnp_mem_start(pnp_dev, 0);
len = pnp_mem_len(pnp_dev, 0);
if (!start)
start = TIS_MEM_BASE;
if (!len)
len = TIS_MEM_LEN;
if (!(chip = tpm_register_hardware(&pnp_dev->dev, &tpm_tis)))
return -ENODEV;