linux/drivers/crypto/caam
Horia Geantă ec360607a2 crypto: caam - fix JR platform device subsequent (re)creations
The way Job Ring platform devices are created and released does not
allow for multiple create-release cycles.

JR0 Platform device creation error
JR0 Platform device creation error
caam 2100000.caam: no queues configured, terminating
caam: probe of 2100000.caam failed with error -12

The reason is that platform devices are created for each job ring:

        for_each_available_child_of_node(nprop, np)
                if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") ||
                    of_device_is_compatible(np, "fsl,sec4.0-job-ring")) {
                        ctrlpriv->jrpdev[ring] =
                                of_platform_device_create(np, NULL, dev);

which sets OF_POPULATED on the device node, but then it cleans these up:

        /* Remove platform devices for JobRs */
        for (ring = 0; ring < ctrlpriv->total_jobrs; ring++) {
                if (ctrlpriv->jrpdev[ring])
                        of_device_unregister(ctrlpriv->jrpdev[ring]);
        }

which leaves OF_POPULATED set.

Use of_platform_populate / of_platform_depopulate instead.
This allows for a bit of driver clean-up, jrpdev is no longer needed.

Logic changes a bit too:
-exit in case of_platform_populate fails, since currently even QI backend
depends on JR; true, we no longer support the case when "some" of the JR
DT nodes are incorrect
-when cleaning up, caam_remove() would also depopulate RTIC in case
it would have been populated somewhere else - not the case for now

Cc: <stable@vger.kernel.org>
Fixes: 313ea293e9 ("crypto: caam - Add Platform driver for Job Ring")
Reported-by: Russell King <rmk+kernel@armlinux.org.uk>
Suggested-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-04-05 21:20:15 +08:00
..
caamalg_desc.c crypto: caam - make aamalg_desc a proper module 2016-12-01 21:06:40 +08:00
caamalg_desc.h crypto: caam - refactor encryption descriptors generation 2016-11-28 21:23:23 +08:00
caamalg.c crypto: caam - fix DMA API leaks for multiple setkey() calls 2017-02-15 13:23:41 +08:00
caamhash.c crypto: caam - fix state buffer DMA (un)mapping 2017-02-15 13:23:43 +08:00
caampkc.c crypto: caam - fix sparse warnings 2016-11-13 17:45:08 +08:00
caampkc.h crypto: caam - add support for RSA algorithm 2016-07-05 23:05:24 +08:00
caamrng.c crypto: caam - trivial code clean-up 2016-11-13 17:45:12 +08:00
compat.h crypto: caam - add support for RSA algorithm 2016-07-05 23:05:24 +08:00
ctrl.c crypto: caam - fix JR platform device subsequent (re)creations 2017-04-05 21:20:15 +08:00
ctrl.h crypto: caam - fix ERA retrieval function 2014-02-09 09:59:27 +08:00
desc_constr.h crypto: caam - pass key buffers with typesafe pointers 2016-12-01 21:06:40 +08:00
desc.h crypto: caam - move sec4_sg_entry to sg_sw_sec4.h 2016-11-13 17:45:14 +08:00
error.c crypto: caam - don't include unneeded headers 2017-02-15 13:23:36 +08:00
error.h crypto: caam - Contain caam_jr_strstatus() ugliness 2014-05-08 21:58:06 +08:00
intern.h crypto: caam - fix JR platform device subsequent (re)creations 2017-04-05 21:20:15 +08:00
jr.c crypto: caam - check return code of dma_set_mask_and_coherent() 2017-02-15 13:23:37 +08:00
jr.h crypto: caam - Add API's to allocate/free Job Rings 2013-10-30 12:02:57 +08:00
Kconfig crypto: caam - make aamalg_desc a proper module 2016-12-01 21:06:40 +08:00
key_gen.c crypto: caam - consolidate split key length computation 2016-11-28 21:23:23 +08:00
key_gen.h crypto: caam - consolidate split key length computation 2016-11-28 21:23:23 +08:00
Makefile crypto: caam - refactor encryption descriptors generation 2016-11-28 21:23:23 +08:00
pdb.h crypto: caam - add support for RSA algorithm 2016-07-05 23:05:24 +08:00
pkc_desc.c crypto: caam - add support for RSA algorithm 2016-07-05 23:05:24 +08:00
regs.h crypto: caam - treat SGT address pointer as u64 2016-10-02 22:33:45 +08:00
sg_sw_sec4.h crypto: caam - replace sg_count() with sg_nents_for_len() 2017-02-15 13:23:39 +08:00