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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-01-18 01:28:15 +0900 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-03-05 13:04:27 +0100 |
| commit | 9b3ab55dbabd8bc8ac226a603f02ad39e6202521 (patch) | |
| tree | 63f410f63ecb9fe3c3e8f3560450e0d46b72f8d7 /drivers/mmc/host | |
| parent | b12a7a28f860c3ab078ae306e13a659ec70b3c33 (diff) | |
| download | linux-9b3ab55dbabd8bc8ac226a603f02ad39e6202521.tar.gz linux-9b3ab55dbabd8bc8ac226a603f02ad39e6202521.tar.bz2 linux-9b3ab55dbabd8bc8ac226a603f02ad39e6202521.zip | |
mmc: tmio: clear force_pio flag before starting data transfer
Currently, force_pio is cleared when the driver exits. Then, it
resulted in clearing it in multiple places since MMC drivers in
general have multiple exit points.
tmio_mmc_reset_work - bails out on timeout
tmio_process_mrq - error out when it cannot send a command
tmio_mmc_finish_request - successful exit
This is error-prone since we may miss to cover all bail-out points.
To simplify the code, the data structure should be initialized just
before used since we have a single entrance. force_pio is only used
for data transfer, so tmio_mmc_start_data() will be a suitable place
to clear this flag.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_core.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 75f0d6e273b5..bcc9fcd5f559 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -278,7 +278,6 @@ static void tmio_mmc_reset_work(struct work_struct *work) host->cmd = NULL; host->data = NULL; - host->force_pio = false; spin_unlock_irqrestore(&host->lock, flags); @@ -759,6 +758,7 @@ static int tmio_mmc_start_data(struct tmio_mmc_host *host, tmio_mmc_init_sg(host, data); host->data = data; + host->force_pio = false; /* Set transfer length / blocksize */ sd_ctrl_write16(host, CTL_SD_XFER_LEN, data->blksz); @@ -850,7 +850,6 @@ static void tmio_process_mrq(struct tmio_mmc_host *host, return; fail: - host->force_pio = false; host->mrq = NULL; mrq->cmd->error = ret; mmc_request_done(host->mmc, mrq); @@ -900,7 +899,6 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host) if (host->cmd != mrq->sbc) { host->cmd = NULL; host->data = NULL; - host->force_pio = false; host->mrq = NULL; } |