linux/drivers/crypto/caam
Yanjiang Jin 4842234f83 hwrng: caam - fix rng_unmap_ctx's DMA_UNMAP size problem
Fix rng_unmap_ctx's DMA_UNMAP size problem for caam_rng, else system would
report the below calltrace during cleanup caam_rng.
Since rng_create_sh_desc() creates a fixed descriptor of exactly 4
command-lengths now, also update DESC_RNG_LEN to (4 * CAAM_CMD_SZ).

caam_jr ffe301000.jr: DMA-API: device driver frees DMA memory with different size [device address=0x000000007f080010] [map size=16 bytes] [unmap size=40 bytes]
------------[ cut here ]------------
WARNING: at lib/dma-debug.c:887
Modules linked in:
task: c0000000f7cdaa80 ti: c0000000e5340000 task.ti: c0000000e5340000
NIP: c0000000004f5bc8 LR: c0000000004f5bc4 CTR: c0000000005f69b0
REGS: c0000000e53433c0 TRAP: 0700   Not tainted
MSR: 0000000080029000 <CE,EE,ME>  CR: 24088482  XER: 00000000
SOFTE: 0

GPR00: c0000000004f5bc4 c0000000e5343640 c0000000012af360 000000000000009f
GPR04: 0000000000000000 00000000000000a0 c000000000d02070 c000000015980660
GPR08: c000000000cff360 0000000000000000 0000000000000000 c0000000012da018
GPR12: 00000000000001e3 c000000001fff780 00000000100f0000 0000000000000001
GPR16: 0000000000000002 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 ffffffffffffffff 0000000000000001
GPR24: 0000000000000001 0000000000000001 0000000000000000 0000000000000001
GPR28: c000000001556b90 c000000001565b80 c0000000e5343750 c0000000f9427480
NIP [c0000000004f5bc8] .check_unmap+0x538/0x9c0
LR [c0000000004f5bc4] .check_unmap+0x534/0x9c0
Call Trace:
[c0000000e5343640] [c0000000004f5bc4] .check_unmap+0x534/0x9c0 (unreliable)
[c0000000e53436e0] [c0000000004f60d4] .debug_dma_unmap_page+0x84/0xb0
[c0000000e5343810] [c00000000082f9d4] .caam_cleanup+0x1d4/0x240
[c0000000e53438a0] [c00000000056cc88] .hwrng_unregister+0xd8/0x1c0
Instruction dump:
7c641b78 41de0410 e8a90050 2fa50000 419e0484 e8de0028 e8ff0030 3c62ff90
e91e0030 38638388 48546ed9 60000000 <0fe00000> 3c62ff8f 38637fc8 48546ec5
---[ end trace e43fd1734d6600df ]---

Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-03-09 21:06:17 +11:00
..
Kconfig crypto: caam - Add Platform driver for Job Ring 2013-10-30 12:02:57 +08:00
Makefile crypto: caam - Add Platform driver for Job Ring 2013-10-30 12:02:57 +08:00
caamalg.c crypto: caam - remove dead code 2015-01-26 11:34:23 +11:00
caamhash.c crypto: caam - fix uninitialized edesc->sec4_sg_bytes field 2015-03-09 21:06:17 +11:00
caamrng.c hwrng: caam - fix rng_unmap_ctx's DMA_UNMAP size problem 2015-03-09 21:06:17 +11:00
compat.h crypto: caam - add support for rfc3686(ctr(aes)) 2014-11-06 23:15:04 +08:00
ctrl.c crypto: caam - remove unused local variable 2015-01-26 11:34:24 +11:00
ctrl.h crypto: caam - fix ERA retrieval function 2014-02-09 09:59:27 +08:00
desc.h crypto: caam - remove duplicate FIFOST_CONT_MASK define 2014-06-20 21:27:57 +08:00
desc_constr.h crypto: caam - add support for ctr(aes) 2014-11-06 23:15:04 +08:00
error.c crypto: caam - don't emit ICV check failures to dmesg 2015-01-26 11:34:23 +11:00
error.h crypto: caam - Contain caam_jr_strstatus() ugliness 2014-05-08 21:58:06 +08:00
intern.h crypto: caam - Dynamic allocation of addresses for various memory blocks in CAAM. 2014-09-15 19:44:11 +08:00
jr.c crypto: caam - fix resource clean-up on error path for caam_jr_init 2015-01-26 11:34:25 +11:00
jr.h crypto: caam - Add API's to allocate/free Job Rings 2013-10-30 12:02:57 +08:00
key_gen.c crypto: caam - fix missing dma unmap on error path 2014-11-06 23:10:20 +08:00
key_gen.h crypto: caam - change key gen functions to return signed int 2013-04-25 21:01:43 +08:00
pdb.h crypto: caam - Add define for Adjust Output Frame Length in PDB 2013-05-28 15:37:08 +08:00
regs.h crypto: caam - Dynamic allocation of addresses for various memory blocks in CAAM. 2014-09-15 19:44:11 +08:00
sg_sw_sec4.h crypto: replace scatterwalk_sg_next with sg_next 2015-01-26 11:34:22 +11:00