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crypto: ccp - use -ENOSPC for transient busy indication 

Replace -EBUSY with -ENOSPC when reporting transient busy
indication in the absence of backlog.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef 2017-10-18 08:00:34 +01:00 committed by Herbert Xu
parent 6b80ea389a
commit cfba73d25f
2 changed files with 8 additions and 7 deletions
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8
drivers/crypto/ccp/ccp-crypto-main.c
View File

@ -222,10 +222,11 @@ static int ccp_crypto_enqueue_cmd(struct ccp_crypto_cmd *crypto_cmd)
/* Check if the cmd can/should be queued */
if (req_queue.cmd_count >= CCP_CRYPTO_MAX_QLEN) {
ret = -EBUSY;
if (!(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG))
if (!(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG)) {
ret = -ENOSPC;
goto e_lock;
}
}
/* Look for an entry with the same tfm. If there is a cmd
* with the same tfm in the list then the current cmd cannot
@ -243,9 +244,6 @@ static int ccp_crypto_enqueue_cmd(struct ccp_crypto_cmd *crypto_cmd)
ret = ccp_enqueue_cmd(crypto_cmd->cmd);
if (!ccp_crypto_success(ret))
goto e_lock; /* Error, don't queue it */
if ((ret == -EBUSY) &&
!(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG))
goto e_lock; /* Not backlogging, don't queue it */
}
if (req_queue.cmd_count >= CCP_CRYPTO_MAX_QLEN) {

5
drivers/crypto/ccp/ccp-dev.c
View File

@ -292,9 +292,12 @@ int ccp_enqueue_cmd(struct ccp_cmd *cmd)
i = ccp->cmd_q_count;
if (ccp->cmd_count >= MAX_CMD_QLEN) {
if (cmd->flags & CCP_CMD_MAY_BACKLOG) {
ret = -EBUSY;
if (cmd->flags & CCP_CMD_MAY_BACKLOG)
list_add_tail(&cmd->entry, &ccp->backlog);
} else {
ret = -ENOSPC;
}
} else {
ret = -EINPROGRESS;
ccp->cmd_count++;