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path: root/drivers/crypto/omap-des.c
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2021-08-21crypto: omap - Fix inconsistent locking of device listsBen Hutchings1-4/+4
lockdep complains that in omap-aes, the list_lock is taken both with softirqs enabled at probe time, and also in softirq context, which could lead to a deadlock: ================================ WARNING: inconsistent lock state 5.14.0-rc1-00035-gc836005b01c5-dirty #69 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. ksoftirqd/0/7 [HC0[0]:SC1[3]:HE1:SE0] takes: bf00e014 (list_lock){+.?.}-{2:2}, at: omap_aes_find_dev+0x18/0x54 [omap_aes_driver] {SOFTIRQ-ON-W} state was registered at: _raw_spin_lock+0x40/0x50 omap_aes_probe+0x1d4/0x664 [omap_aes_driver] platform_probe+0x58/0xb8 really_probe+0xbc/0x314 __driver_probe_device+0x80/0xe4 driver_probe_device+0x30/0xc8 __driver_attach+0x70/0xf4 bus_for_each_dev+0x70/0xb4 bus_add_driver+0xf0/0x1d4 driver_register+0x74/0x108 do_one_initcall+0x84/0x2e4 do_init_module+0x5c/0x240 load_module+0x221c/0x2584 sys_finit_module+0xb0/0xec ret_fast_syscall+0x0/0x2c 0xbed90b30 irq event stamp: 111800 hardirqs last enabled at (111800): [<c02a21e4>] __kmalloc+0x484/0x5ec hardirqs last disabled at (111799): [<c02a21f0>] __kmalloc+0x490/0x5ec softirqs last enabled at (111776): [<c01015f0>] __do_softirq+0x2b8/0x4d0 softirqs last disabled at (111781): [<c0135948>] run_ksoftirqd+0x34/0x50 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(list_lock); <Interrupt> lock(list_lock); *** DEADLOCK *** 2 locks held by ksoftirqd/0/7: #0: c0f5e8c8 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb+0x6c/0x260 #1: c0f5e8c8 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x2c/0xdc stack backtrace: CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 5.14.0-rc1-00035-gc836005b01c5-dirty #69 Hardware name: Generic AM43 (Flattened Device Tree) [<c010e6e0>] (unwind_backtrace) from [<c010b9d0>] (show_stack+0x10/0x14) [<c010b9d0>] (show_stack) from [<c017c640>] (mark_lock.part.17+0x5bc/0xd04) [<c017c640>] (mark_lock.part.17) from [<c017d9e4>] (__lock_acquire+0x960/0x2fa4) [<c017d9e4>] (__lock_acquire) from [<c0180980>] (lock_acquire+0x10c/0x358) [<c0180980>] (lock_acquire) from [<c093d324>] (_raw_spin_lock_bh+0x44/0x58) [<c093d324>] (_raw_spin_lock_bh) from [<bf00b258>] (omap_aes_find_dev+0x18/0x54 [omap_aes_driver]) [<bf00b258>] (omap_aes_find_dev [omap_aes_driver]) from [<bf00b328>] (omap_aes_crypt+0x94/0xd4 [omap_aes_driver]) [<bf00b328>] (omap_aes_crypt [omap_aes_driver]) from [<c08ac6d0>] (esp_input+0x1b0/0x2c8) [<c08ac6d0>] (esp_input) from [<c08c9e90>] (xfrm_input+0x410/0x1290) [<c08c9e90>] (xfrm_input) from [<c08b6374>] (xfrm4_esp_rcv+0x54/0x11c) [<c08b6374>] (xfrm4_esp_rcv) from [<c0838840>] (ip_protocol_deliver_rcu+0x48/0x3bc) [<c0838840>] (ip_protocol_deliver_rcu) from [<c0838c50>] (ip_local_deliver_finish+0x9c/0xdc) [<c0838c50>] (ip_local_deliver_finish) from [<c0838dd8>] (ip_local_deliver+0x148/0x1b0) [<c0838dd8>] (ip_local_deliver) from [<c0838f5c>] (ip_rcv+0x11c/0x180) [<c0838f5c>] (ip_rcv) from [<c077e3a4>] (__netif_receive_skb_one_core+0x54/0x74) [<c077e3a4>] (__netif_receive_skb_one_core) from [<c077e588>] (netif_receive_skb+0xa8/0x260) [<c077e588>] (netif_receive_skb) from [<c068d6d4>] (cpsw_rx_handler+0x224/0x2fc) [<c068d6d4>] (cpsw_rx_handler) from [<c0688ccc>] (__cpdma_chan_process+0xf4/0x188) [<c0688ccc>] (__cpdma_chan_process) from [<c068a0c0>] (cpdma_chan_process+0x3c/0x5c) [<c068a0c0>] (cpdma_chan_process) from [<c0690e14>] (cpsw_rx_mq_poll+0x44/0x98) [<c0690e14>] (cpsw_rx_mq_poll) from [<c0780810>] (__napi_poll+0x28/0x268) [<c0780810>] (__napi_poll) from [<c0780c64>] (net_rx_action+0xcc/0x204) [<c0780c64>] (net_rx_action) from [<c0101478>] (__do_softirq+0x140/0x4d0) [<c0101478>] (__do_softirq) from [<c0135948>] (run_ksoftirqd+0x34/0x50) [<c0135948>] (run_ksoftirqd) from [<c01583b8>] (smpboot_thread_fn+0xf4/0x1d8) [<c01583b8>] (smpboot_thread_fn) from [<c01546dc>] (kthread+0x14c/0x174) [<c01546dc>] (kthread) from [<c010013c>] (ret_from_fork+0x14/0x38) ... The omap-des and omap-sham drivers appear to have a similar issue. Fix this by using spin_{,un}lock_bh() around device list access in all the probe and remove functions. Signed-off-by: Ben Hutchings <ben.hutchings@mind.be> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-06-11crypto: omap-des - using pm_runtime_resume_and_get instead of ↵Zhang Qilong1-6/+3
pm_runtime_get_sync Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-06-26crypto: omap-des - Fix sparse/compiler warningsHerbert Xu1-3/+3
This patch fixes sparse endianness warnings as well as compiler warnings on 64-bit hosts. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-12-11crypto: omap-des - handle NULL cipher requestTero Kristo1-0/+3
If no data is provided for DES request, just return immediately. No processing is needed in this case. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-12-11crypto: omap-des - avoid unnecessary spam with bad cryptlenTero Kristo1-3/+1
Remove the error print in this case, and just return the error. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-12-11crypto: omap-des - add IV output handlingTero Kristo1-0/+6
Currently omap-des driver does not copy end result IV out at all. This is evident with the additional checks done at the crypto test manager. Fix by copying out the IV values from HW. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-11-17crypto: omap - switch to skcipher APIArd Biesheuvel1-128/+104
Commit 7a7ffe65c8c5 ("crypto: skcipher - Add top-level skcipher interface") dated 20 august 2015 introduced the new skcipher API which is supposed to replace both blkcipher and ablkcipher. While all consumers of the API have been converted long ago, some producers of the ablkcipher remain, forcing us to keep the ablkcipher support routines alive, along with the matching code to expose [a]blkciphers via the skcipher API. So switch this driver to the skcipher API, allowing us to finally drop the ablkcipher code in the near future. Cc: Tony Lindgren <tony@atomide.com> Cc: linux-omap@vger.kernel.org Reviewed-by: Tero Kristo <t-kristo@ti.com> Tested-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-08-22crypto: omap/des - switch to new verification routinesArd Biesheuvel1-19/+8
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-08-09crypto: drivers - Remove dev_err() usage after platform_get_irq()Stephen Boyd1-1/+0
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: <linux-crypto@vger.kernel.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-5/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-18crypto: omap - Forbid 2-key 3DES in FIPS modeHerbert Xu1-5/+24
This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode. It also removes a couple of unnecessary key length checks that are already performed by the crypto API. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-25crypto: clarify name of WEAK_KEY request flagEric Biggers1-1/+1
CRYPTO_TFM_REQ_WEAK_KEY confuses newcomers to the crypto API because it sounds like it is requesting a weak key. Actually, it is requesting that weak keys be forbidden (for algorithms that have the notion of "weak keys"; currently only DES and XTS do). Also it is only one letter away from CRYPTO_TFM_RES_WEAK_KEY, with which it can be easily confused. (This in fact happened in the UX500 driver, though just in some debugging messages.) Therefore, make the intent clear by renaming it to CRYPTO_TFM_REQ_FORBID_WEAK_KEYS. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-11-20crypto: remove useless initializations of cra_listEric Biggers1-1/+0
Some algorithms initialize their .cra_list prior to registration. But this is unnecessary since crypto_register_alg() will overwrite .cra_list when adding the algorithm to the 'crypto_alg_list'. Apparently the useless assignment has just been copy+pasted around. So, remove the useless assignments. Exception: paes_s390.c uses cra_list to check whether the algorithm is registered or not, so I left that as-is for now. This patch shouldn't change any actual behavior. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-02-15crypto: omap - convert to new crypto engine APICorentin LABBE1-6/+18
This patch convert the driver to the new crypto engine API. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-10-07crypto: omap - use of_device_get_match_dataCorentin LABBE1-5/+2
The usage of of_device_get_match_data reduce the code size a bit. Furthermore, it prevents an improbable dereference when of_match_device() return NULL. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-07-18crypto: omap-des - fix error return code in omap_des_probe()Gustavo A. R. Silva1-1/+2
Print and propagate the return value of platform_get_irq on failure. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-10crypto: omap-des - use base omap crypto support libraryTero Kristo1-84/+28
Use the SG alignment APIs from the OMAP crypto support library instead of using own implementations. This reduces the amount of copy-paste code. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-10crypto: omap-des - use runtime_pm autosuspend for clock handlingTero Kristo1-2/+8
Convert the driver to use autosuspend for runtime_pm. This boosts the performance, and optimizes the power consumption for the driver. By default, the timeout value for autosuspend is set to one second. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-10crypto: omap-des - add check for weak keysTero Kristo1-2/+14
OMAP DES crypto accelerator itself is unable to detect weak keys, so add a specific call to the generic des driver to check the key strength if requested. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-09-22crypto: omap-des - fix error return code in omap_des_probe()Wei Yongjun1-1/+3
Fix to return error code -ENOMEM from the crypto_engine_alloc_init() error handling case instead of 0, as done elsewhere in this function. Fixes: f1b77aaca85a ("crypto: omap-des - Integrate with the crypto engine framework") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-09-13crypto: omap-des - fix crypto engine initialization orderTero Kristo1-13/+15
The crypto engine must be initialized before registering algorithms, otherwise the test manager will crash as it attempts to execute tests for the algos while they are being registered. Fixes: f1b77aaca85a ("crypto: omap-des - Integrate with the crypto engine framework") Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-09-07crypto: engine - permit to enqueue ashash_requestCorentin LABBE1-4/+4
The current crypto engine allow only ablkcipher_request to be enqueued. Thus denying any use of it for hardware that also handle hash algo. This patch modify the API for allowing to enqueue ciphers and hash. Since omap-aes/omap-des are the only users, this patch also convert them to the new cryptoengine API. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-09-07crypto: engine - move crypto engine to its own headerCorentin LABBE1-0/+1
This patch move the whole crypto engine API to its own header crypto/engine.h. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-18crypto: omap - Stop using crypto scatterwalk_bytes_sglenHerbert Xu1-4/+10
We already have a generic function sg_nents_for_len which does the same thing. This patch switches omap over to it and also adds error handling in case the SG list is short. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-05-03crypto: omap-des - Use dma_request_chan() for requesting DMA channelPeter Ujfalusi1-51/+17
With the new dma_request_chan() the client driver does not need to look for the DMA resource and it does not need to pass filter_fn anymore. By switching to the new API the driver can now support deferred probing against DMA. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> CC: Herbert Xu <herbert@gondor.apana.org.au> CC: David S. Miller <davem@davemloft.net> CC: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-05-03crypto: omap-des - Integrate with the crypto engine frameworkBaolin Wang1-54/+43
Since the crypto engine framework had been merged, thus this patch integrates with the newly added crypto engine framework to make the crypto hardware engine under utilized as each block needs to be processed before the crypto hardware can start working on the next block. The crypto engine framework can manage and process the requests automatically, so remove the 'queue' and 'queue_task' things in omap des driver. Signed-off-by: Baolin <baolin.wang@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-12-17crypto: omap - Removed unused variable "err"Rahul Pathak1-3/+1
Removed unused variable "err" and directly return "0" Reported by coccicheck - ./drivers/crypto/omap-aes.c:542:5-8: Unneeded variable: "err". Return "0" on line 551 ./drivers/crypto/omap-des.c:530:5-8: Unneeded variable: "err". Return "0" on line 539 Signed-off-by: Rahul Pathak <rpathak@visteon.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-12-14crypto: omap-des - Fix "schedule while atomic" bugSam Protsenko1-0/+1
When using DES module the next bug appears: BUG: scheduling while atomic: kworker/0:1/63/0x00000102 With backtrace as follows: <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< cut here >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [<c0012294>] (dump_backtrace) from [<c00124ac>] (show_stack+0x18/0x1c) [<c0012494>] (show_stack) from [<c0752554>] (dump_stack+0x84/0xc4) [<c07524d0>] (dump_stack) from [<c0750218>] (__schedule_bug+0x54/0x64) [<c07501c4>] (__schedule_bug) from [<c07548a4>] (__schedule+0x4ac/0x53c) [<c07543f8>] (__schedule) from [<c075496c>] (schedule+0x38/0x88) [<c0754934>] (schedule) from [<c03c3984>] (rpm_resume+0x158/0x59c) [<c03c382c>] (rpm_resume) from [<c03c3e1c>] (__pm_runtime_resume+0x54/0x6c) [<c03c3dc8>] (__pm_runtime_resume) from [<c0568ff8>] (omap_des_handle_queue+0x154/0x7bc) [<c0568ea4>] (omap_des_handle_queue) from [<c05696b8>] (omap_des_crypt+0x58/0xbc) [<c0569660>] (omap_des_crypt) from [<c0569730>] (omap_des_cbc_decrypt+0x14/0x18) [<c056971c>] (omap_des_cbc_decrypt) from [<c0297534>] (authenc_verify_ahash_done+0xe0/0xe8) [<c0297454>] (authenc_verify_ahash_done) from [<c056a330>] (omap_sham_finish_req+0x58/0xa8) [<c056a2d8>] (omap_sham_finish_req) from [<c056b714>] (omap_sham_done_task+0x1c0/0x1e0) [<c056b554>] (omap_sham_done_task) from [<c003e53c>] (tasklet_action+0x80/0x118) [<c003e4bc>] (tasklet_action) from [<c003e740>] (__do_softirq+0x11c/0x260) [<c003e624>] (__do_softirq) from [<c003eb64>] (irq_exit+0xc0/0xfc) [<c003eaa4>] (irq_exit) from [<c000f1c4>] (handle_IRQ+0x4c/0x98) [<c000f178>] (handle_IRQ) from [<c0008568>] (gic_handle_irq+0x34/0x64) [<c0008534>] (gic_handle_irq) from [<c0758540>] (__irq_svc+0x40/0x70) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< cut here >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Insight was seen in drivers/crypto/omap-sham.c driver. All credits for this patch go to Grygorii Strashko. Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-06crypto: omap-des - Fix unmapping of dma channelsVutla, Lokesh1-3/+0
dma_unmap_sg() is being called twice after completing the task. Looks like this is a copy paste error when creating des driver. With this the following warn appears during boot: [ 4.210457] ------------[ cut here ]------------ [ 4.215114] WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:1080 check_unmap+0x710/0x9a0() [ 4.222899] omap-des 480a5000.des: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x00000000ab2ce000] [size=8 bytes] [ 4.236785] Modules linked in: [ 4.239860] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.39-02999-g1bc045a-dirty #182 [ 4.247918] [<c001678c>] (unwind_backtrace) from [<c0012574>] (show_stack+0x10/0x14) [ 4.255710] [<c0012574>] (show_stack) from [<c05a37e8>] (dump_stack+0x84/0xb8) [ 4.262977] [<c05a37e8>] (dump_stack) from [<c0046464>] (warn_slowpath_common+0x68/0x8c) [ 4.271107] [<c0046464>] (warn_slowpath_common) from [<c004651c>] (warn_slowpath_fmt+0x30/0x40) [ 4.279854] [<c004651c>] (warn_slowpath_fmt) from [<c02d50a4>] (check_unmap+0x710/0x9a0) [ 4.287991] [<c02d50a4>] (check_unmap) from [<c02d5478>] (debug_dma_unmap_sg+0x90/0x19c) [ 4.296128] [<c02d5478>] (debug_dma_unmap_sg) from [<c04a77d8>] (omap_des_done_task+0x1cc/0x3e4) [ 4.304963] [<c04a77d8>] (omap_des_done_task) from [<c004a090>] (tasklet_action+0x84/0x124) [ 4.313370] [<c004a090>] (tasklet_action) from [<c004a4ac>] (__do_softirq+0xf0/0x20c) [ 4.321235] [<c004a4ac>] (__do_softirq) from [<c004a840>] (irq_exit+0x98/0xec) [ 4.328500] [<c004a840>] (irq_exit) from [<c000f9ac>] (handle_IRQ+0x50/0xb0) [ 4.335589] [<c000f9ac>] (handle_IRQ) from [<c0008688>] (gic_handle_irq+0x28/0x5c) Removing the duplicate call to dma_unmap_sg(). Cc: stable@vger.kernel.org Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-01-26crypto: replace scatterwalk_sg_next with sg_nextCristian Stoica1-2/+2
Modify crypto drivers to use the generic SG helper since both of them are equivalent and the one from crypto is redundant. See also: 468577abe37ff7b453a9ac613e0ea155349203ae reverted in b2ab4a57b018aafbba35bff088218f5cc3d2142e Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-01-08crypto: omap-des - fix BUG_ON conditionAsaf Vertz1-2/+2
dd->total is unsigned so it won't do any good to check for negative value after subtracting instead of that we should check if the subtracted value is bigger than him This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Asaf Vertz <asaf.vertz@tandemg.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-10-20crypto: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-04-16crypto: omap-des - handle error of pm_runtime_get_syncNishanth Menon1-3/+23
pm_runtime_get_sync may not always succeed depending on SoC involved. So handle the error appropriately ensuring usage_count is accurate in case of failure. Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Reported-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Joachim Eastwood <manabian@gmail.com> Acked-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-04-16crypto: omap-des - use devm_ioremap_resource()Jingoo Han1-4/+3
Use devm_ioremap_resource() because devm_request_and_ioremap() is obsoleted by devm_ioremap_resource(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Joel Fernandes <joelf@ti.com> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-03-10crypto: omap-des - make local functions staticJingoo Han1-2/+2
Make omap_des_copy_needed(), omap_des_copy_sgs(), because these functions are used only in this file. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-03-10crypto: omap-des - Use SIMPLE_DEV_PM_OPS macroJingoo Han1-3/+1
Use SIMPLE_DEV_PM_OPS macro in order to make the code simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-02-27crypto: omap-des - Add omap-des driver for OMAP4/AM43xxJoel Fernandes1-0/+1218
Add omap-des driver with platform data for OMAP4/AM43xx. Support added for DES ECB and CBC modes. Also add support for 3DES operation where 3 64-bit keys are used to perform a DES encrypt-decrypt-encrypt (des3_ede) operation on a buffer. Tests have been conducted with the CRYPTO test manager, and functionality is verified at different page length alignments. Signed-off-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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