tpm: Add a helper for checking hwrng enabled

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commit cacc6e2293 upstream.

The same checks are repeated in three places to decide whether to use
hwrng.  Consolidate these into a helper.

Also this fixes a case that one of them was missing a check in the
cleanup path.

Fixes: 554b841d47 ("tpm: Disable RNG for all AMD fTPMs")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Mario Limonciello 2023-08-07 23:12:29 -05:00 • committed by Greg Kroah-Hartman

parent d8a7d6136c

commit ccb1700ed6

1 changed files with 14 additions and 5 deletions

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drivers/char/tpm/tpm-chip.c

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