[PATCH] mmc: mmci: Add small comment about reset thread

From: Linus Walleij <linus.walleij@linaro.org>
To: linux-mmc@vger.kernel.org, Ulf Hansson <ulf.hansson@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Russell King <linux@armlinux.org.uk>,
	Yann Gautier <yann.gautier@foss.st.com>,
	Ludovic Barre <ludovic.barre@st.com>
Subject: [PATCH] mmc: mmci: Add small comment about reset thread
Date: Tue, 21 Sep 2021 16:33:59 +0200	[thread overview]
Message-ID: <20210921143359.1738149-1-linus.walleij@linaro.org> (raw)

Put a small comment before assigning IRQ_WAKE_THREAD
telling us what is going on.

Cc: Russell King <linux@armlinux.org.uk>
Cc: Yann Gautier <yann.gautier@foss.st.com>
Cc: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/mmc/host/mmci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 3765e2f4ad98..c9cacd4d5b22 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1394,6 +1394,10 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
 	} else if (host->variant->busy_timeout && busy_resp &&
 		   status & MCI_DATATIMEOUT) {
 		cmd->error = -ETIMEDOUT;
+		/*
+		 * This will wake up mmci_irq_thread() which will issue
+		 * a hardware reset of the MMCI block.
+		 */
 		host->irq_action = IRQ_WAKE_THREAD;
 	} else {
 		cmd->resp[0] = readl(base + MMCIRESPONSE0);
-- 
2.31.1

