Commit 2673493f authored by Linus Walleij's avatar Linus Walleij Committed by Ulf Hansson
Browse files

mmc: mmci: Clear busy_status when starting command 



If we are starting a command which can generate a busy
response, then clear the variable host->busy_status
if the variant is using a ->busy_complete callback.

We are lucky that the member is zero by default and
hopefully always gets cleared in the ->busy_complete
callback even on errors, but it's just fragile so
make sure it is always initialized to zero.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230405-pl180-busydetect-fix-v7-1-69a7164f2a61@linaro.org


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent ae6a2c44

drivers/mmc/host/mmci.c

+1 −0
Original line number Diff line number Diff line
@@ -1238,6 +1238,7 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c) 
			c |= host->variant->cmdreg_srsp;

	}



	host->busy_status = 0;

	if (host->variant->busy_timeout && cmd->flags & MMC_RSP_BUSY) {

		if (!cmd->busy_timeout)

			cmd->busy_timeout = 10 * MSEC_PER_SEC;