diff options
author | Gary R Hook <gary.hook@amd.com> | 2016-04-18 09:21:44 -0500 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-04-20 17:50:06 +0800 |
commit | 58ea8abf490415c390e0cc671e875510c9b66318 (patch) | |
tree | 20a3e546b2fcf9e65410dd4ce9b088e7b2ceaecb /drivers/crypto/ccp/ccp-dev-v3.c | |
parent | 5343e674f32fb82b7a80a24b5a84eee62d3fe624 (diff) |
crypto: ccp - Register the CCP as a DMA resource
The CCP has the ability to provide DMA services to the
kernel using pass-through mode of the device. Register
these services as general purpose DMA channels.
Changes since v2:
- Add a Signed-off-by
Changes since v1:
- Allocate memory for a string in ccp_dmaengine_register
- Ensure register/unregister calls are properly ordered
- Verified all changed files are listed in the diffstat
- Undo some superfluous changes
- Added a cc:
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/ccp-dev-v3.c')
-rw-r--r-- | drivers/crypto/ccp/ccp-dev-v3.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-dev-v3.c b/drivers/crypto/ccp/ccp-dev-v3.c index 7d5eab49179e..597fc50bdaa6 100644 --- a/drivers/crypto/ccp/ccp-dev-v3.c +++ b/drivers/crypto/ccp/ccp-dev-v3.c @@ -406,6 +406,11 @@ static int ccp_init(struct ccp_device *ccp) goto e_kthread; } + /* Register the DMA engine support */ + ret = ccp_dmaengine_register(ccp); + if (ret) + goto e_hwrng; + ccp_add_device(ccp); /* Enable interrupts */ @@ -413,6 +418,9 @@ static int ccp_init(struct ccp_device *ccp) return 0; +e_hwrng: + hwrng_unregister(&ccp->hwrng); + e_kthread: for (i = 0; i < ccp->cmd_q_count; i++) if (ccp->cmd_q[i].kthread) @@ -436,6 +444,9 @@ static void ccp_destroy(struct ccp_device *ccp) /* Remove this device from the list of available units first */ ccp_del_device(ccp); + /* Unregister the DMA engine */ + ccp_dmaengine_unregister(ccp); + /* Unregister the RNG */ hwrng_unregister(&ccp->hwrng); |