[PATCH 07/16] mmc: core: do away with is_done_rcv

Linus Walleij
2017-02-09T15:33:54Z

The "is_done_rcv" in the context info for the host is no longer
needed: it is clear from context (ha!) that as long as we are
waiting for the asynchronous request to come to completion,
we are not done receiving data, and when the finalization work
has run and completed the completion, we are indeed done.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/mmc/core/core.c | 40 ++++++++++++++++------------------------
include/linux/mmc/host.h | 2 --
2 files changed, 16 insertions(+), 26 deletions(-)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8ecf61e51662..fcb40ade9b82 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -416,10 +416,8 @@ EXPORT_SYMBOL(mmc_start_bkops);
static void mmc_wait_data_done(struct mmc_request *mrq)
{
struct mmc_host *host = mrq->host;
- struct mmc_context_info *context_info = &host->context_info;
struct mmc_async_req *areq = host->areq;

- context_info->is_done_rcv = true;
/* Schedule a work to deal with finalizing this request */
kthread_queue_work(&host->req_done_worker, &areq->finalization_work);
}
@@ -551,7 +549,7 @@ EXPORT_SYMBOL(mmc_wait_for_req_done);
bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq)
{
if (host->areq)
- return host->context_info.is_done_rcv;
+ return completion_done(&host->areq->complete);
else
return completion_done(&mrq->completion);
}
@@ -600,29 +598,24 @@ void mmc_finalize_areq(struct kthread_work *work)
struct mmc_async_req *areq =
container_of(work, struct mmc_async_req, finalization_work);
struct mmc_host *host = areq->host;
- struct mmc_context_info *context_info = &host->context_info;
enum mmc_blk_status status = MMC_BLK_SUCCESS;
+ struct mmc_command *cmd;

- if (context_info->is_done_rcv) {
- struct mmc_command *cmd;
-
- context_info->is_done_rcv = false;
- cmd = areq->mrq->cmd;
+ cmd = areq->mrq->cmd;

- if (!cmd->error || !cmd->retries ||
- mmc_card_removed(host->card)) {
- status = areq->err_check(host->card,
- areq);
- } else {
- mmc_retune_recheck(host);
- pr_info("%s: req failed (CMD%u): %d, retrying...\n",
- mmc_hostname(host),
- cmd->opcode, cmd->error);
- cmd->retries--;
- cmd->error = 0;
- __mmc_start_request(host, areq->mrq);
- return; /* wait for done/new event again */
- }
+ if (!cmd->error || !cmd->retries ||
+ mmc_card_removed(host->card)) {
+ status = areq->err_check(host->card,
+ areq);
+ } else {
+ mmc_retune_recheck(host);
+ pr_info("%s: req failed (CMD%u): %d, retrying...\n",
+ mmc_hostname(host),
+ cmd->opcode, cmd->error);
+ cmd->retries--;
+ cmd->error = 0;
+ __mmc_start_request(host, areq->mrq);
+ return; /* wait for done/new event again */
}

mmc_retune_release(host);
@@ -2993,7 +2986,6 @@ void mmc_unregister_pm_notifier(struct mmc_host *host)
void mmc_init_context_info(struct mmc_host *host)
{
host->context_info.is_new_req = false;
- host->context_info.is_done_rcv = false;
host->context_info.is_waiting_last_req = false;
}

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index c5f61f2f2310..cbb40682024a 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -194,12 +194,10 @@ struct mmc_slot {

/**
* mmc_context_info - synchronization details for mmc context
- * @is_done_rcv wake up reason was done request
* @is_new_req wake up reason was new request
* @is_waiting_last_req mmc context waiting for single running request
*/
struct mmc_context_info {
- bool is_done_rcv;
bool is_new_req;
bool is_waiting_last_req;
};
--
2.9.3