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| author | Harsh Jain <harsh@chelsio.com> | 2017-01-24 10:34:33 +0530 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-02-03 17:45:44 +0800 |
| commit | f5f7bebc91ab378dea5aad5277c4d283e46472d9 (patch) | |
| tree | da94e5d483aa22d9dbb77d8ed573335d84a0373b | |
| parent | 94e1dab1c94715e18bb0bada503de3f3d7593076 (diff) | |
| download | linux-f5f7bebc91ab378dea5aad5277c4d283e46472d9.tar.bz2 | |
crypto: chcr - Check device is allocated before use
Ensure dev is allocated for crypto uld context before using the device
for crypto operations.
Cc: <stable@vger.kernel.org>
Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/chelsio/chcr_core.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/crypto/chelsio/chcr_core.c b/drivers/crypto/chelsio/chcr_core.c index 918da8e6e2d8..1c65f07e1cc9 100644 --- a/drivers/crypto/chelsio/chcr_core.c +++ b/drivers/crypto/chelsio/chcr_core.c @@ -52,6 +52,7 @@ static struct cxgb4_uld_info chcr_uld_info = { int assign_chcr_device(struct chcr_dev **dev) { struct uld_ctx *u_ctx; + int ret = -ENXIO; /* * Which device to use if multiple devices are available TODO @@ -59,15 +60,14 @@ int assign_chcr_device(struct chcr_dev **dev) * must go to the same device to maintain the ordering. */ mutex_lock(&dev_mutex); /* TODO ? */ - u_ctx = list_first_entry(&uld_ctx_list, struct uld_ctx, entry); - if (!u_ctx) { - mutex_unlock(&dev_mutex); - return -ENXIO; + list_for_each_entry(u_ctx, &uld_ctx_list, entry) + if (u_ctx && u_ctx->dev) { + *dev = u_ctx->dev; + ret = 0; + break; } - - *dev = u_ctx->dev; mutex_unlock(&dev_mutex); - return 0; + return ret; } static int chcr_dev_add(struct uld_ctx *u_ctx) @@ -202,10 +202,8 @@ static int chcr_uld_state_change(void *handle, enum cxgb4_state state) static int __init chcr_crypto_init(void) { - if (cxgb4_register_uld(CXGB4_ULD_CRYPTO, &chcr_uld_info)) { + if (cxgb4_register_uld(CXGB4_ULD_CRYPTO, &chcr_uld_info)) pr_err("ULD register fail: No chcr crypto support in cxgb4"); - return -1; - } return 0; } |