tpm: Replace device number bitmap with IDR

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Replace the device number bitmap with IDR. Extend the number of devices we
can create to 64k.
Since an IDR allows us to associate a pointer with an ID, we use this now
to rewrite tpm_chip_find_get() to simply look up the chip pointer by the
given device ID.

Protect the IDR calls with a mutex.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

...

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Stefan Berger 2016-02-29 08:53:02 -05:00 • committed by Jarkko Sakkinen

parent 3897cd9c8d

commit 15516788e5

3 changed files with 48 additions and 42 deletions

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82

drivers/char/tpm/tpm-chip.c

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1

drivers/char/tpm/tpm-interface.c

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5

drivers/char/tpm/tpm.h

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