Re: [PATCH v3 7/9] arm64: defconfig: Enable FSL_MC_BUS and FSL_MC_DPIO

On 12/15/2018 11:44 PM, Stefan Wahren wrote:

Hi,

quoted

Olof Johansson [off-list ref] hat am 13. Dezember 2018 um 07:48 geschrieben:


On Fri, Nov 09, 2018 at 06:05:24AM +0000, Horia Geanta wrote:

quoted

On 11/9/2018 3:11 AM, Marc Gonzalez wrote:

quoted

Commit e8342cc7954e ("enable CAAM crypto engine on QorIQ DPAA2 SoCs")
enabled CRYPTO_DEV_FSL_DPAA2_CAAM, which depends on FSL_MC_DPIO,
which is not set. Enable FSL_MC_BUS, and build FSL_MC_DPIO and
CRYPTO_DEV_FSL_DPAA2_CAAM as modules.

Signed-off-by: Marc Gonzalez <redacted>

Reviewed-by: Horia Geantă <horia.geanta@nxp.com>

I had to redo this one, and when I did I noticed that there's also an ethernet
driver. Should that be enabled as well?

this patch in next-20181214 breaks "make modules_install" for arm64/defconfig on my Ubuntu machine:

DEPMOD  4.20.0-rc6-next-20181214
depmod: ERROR: Found 6 modules in dependency cycles!
depmod: ERROR: Cycle detected: caamalg_desc -> dpaa2_caam -> authenc
depmod: ERROR: Cycle detected: caamalg_desc -> dpaa2_caam -> fsl_mc_dpio
depmod: ERROR: Cycle detected: dpaa2_caam -> caamhash_desc -> dpaa2_caam
depmod: ERROR: Cycle detected: caamalg_desc -> dpaa2_caam -> caamhash_desc -> error
depmod: ERROR: Cycle detected: caamalg_desc -> dpaa2_caam -> caamhash_desc -> caamalg_desc

After reverting of this patch the issue disappeared.

Seems there's a dependency cycle b/w dpaa2_caam and caam{alg,hash}_desc, as follows:

A->B
---
dpaa2_caam needs cnstr_* exported by caam{alg,hash}_desc

B->A
---
caam{alg,hash}_desc need caam_imx, caam_little_end:
caam{hash,alg}_desc.c
	--> desc_constr.h (included for descriptors generation functions)
		--> regs.h (included for endianness helpers)
			--> extern bool caam_imx, caam_little_end
caam_imx, caam_little_end are exported by dpaa2_caam - caamalg_qi2.c (when
CONFIG_CRYPTO_DEV_FSL_CAAM=n)

Could we drop this patch, until CAAM driver gets a proper fix (which is not
straightforward)?

Thanks,
Horia

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