[PATCH] Revert "caam: Fix CAAM error on startup"

[Peng Fan]

> Subject: [PATCH] Revert "caam: Fix CAAM error on startup"
> 
> This reverts commit 159b6f0e119962ce5da645f548cefe9196c8778e.
> 
> Since commit 159b6f0e1199 ("caam: Fix CAAM error on startup") the
> following regression was reported by Tim Harvey:
> 
> "I've found that this patch causes a regression on an imx8mm board
> (imx8mm_venice_defconfig) where the first call to caam_rng_read fails
> here in jr_dequeue but if you call it again it works. With some
> debugging added:
> SEC0:  RNG instantiated
> ...
> Hit any key to stop autoboot:  0
> u-boot=> rng list
> RNG #0 - caam-rng
> u-boot=> rng 0 10
> caam_rng_read caam-rng len=16
> run_descriptor_jr_idx idx=0
> Error in SEC deq: -1
> caam_rng_read_one run_descriptor_jr failed: -1 caam_rng_read caam-
> rng caam_rng_read_one failed: -5 Reading RNG failed u-boot=> rng 0
> 10 caam_rng_read caam-rng len=16 run_descriptor_jr_idx idx=0
> 00000000: ad 2e ad c0 2a 12 27 c4 65 82 66 19 be ef f6 07  ....*.'.e.f.....
> 
> If I revert your patch caam_rng_read works initially and on subsequent
> calls."
> 
> " I ran into this when I was testing
> lwIP HTTPS as it causes anything that uses dm_rng to fail the first time
> (such as HTTPS)."
> 
> Revert it for now to avoid the regression.
> 
> Reported-by: Tim Harvey <tharvey at gateworks.com>
> Signed-off-by: Fabio Estevam <festevam at gmail.com>

Acked-by: Peng Fan <peng.fan at nxp.com>