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staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core

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[ Upstream commit a389087ee9 ]

Using a fixed 1s timeout for all commands is a bit problematic.

For some commands it means waiting longer than needed for the timeout to
expire, which may not a big issue, but still. For other commands, like for
an erase (CMD38) that uses a R1B response, may require longer timeouts than
1s. In these cases, we may end up treating the command as it failed, while
it just needed some more time to complete successfully.

Fix the problem by respecting the cmd->busy_timeout, which is provided by
the mmc core.

Cc: Rui Miguel Silva <rmfrfs@gmail.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: Alex Elder <elder@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: greybus-dev@lists.linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200414161413.3036-20-ulf.hansson@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ulf Hansson
2020-04-14 18:14:13 +02:00
committed by Greg Kroah-Hartman
parent 59b87f26f7
commit 2c4db6284b
1 changed files with 7 additions and 3 deletions
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10
drivers/staging/greybus/sdio.c
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@@ -411,6 +411,7 @@ static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
struct gb_sdio_command_request request = {0};
struct gb_sdio_command_response response;
struct mmc_data *data = host->mrq->data;
unsigned int timeout_ms;
u8 cmd_flags;
u8 cmd_type;
int i;
@@ -469,9 +470,12 @@ static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
request.data_blksz = cpu_to_le16(data->blksz);
}
ret = gb_operation_sync(host->connection, GB_SDIO_TYPE_COMMAND,
&request, sizeof(request), &response,
sizeof(response));
timeout_ms = cmd->busy_timeout ? cmd->busy_timeout :
GB_OPERATION_TIMEOUT_DEFAULT;
ret = gb_operation_sync_timeout(host->connection, GB_SDIO_TYPE_COMMAND,
&request, sizeof(request), &response,
sizeof(response), timeout_ms);
if (ret < 0)
goto out;