diff mbox series

mmc: mmci: Add small comment about reset thread

Message ID 20210921143359.1738149-1-linus.walleij@linaro.org
State New
Headers show
Series mmc: mmci: Add small comment about reset thread | expand

Commit Message

Linus Walleij Sept. 21, 2021, 2:33 p.m. UTC
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(+)

-- 
2.31.1

Comments

Ulf Hansson Sept. 23, 2021, 6:50 p.m. UTC | #1
On Tue, 21 Sept 2021 at 16:36, Linus Walleij <linus.walleij@linaro.org> wrote:
>

> 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>


Applied for next, thanks!

Kind regards
Uffe


> ---

>  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

>
diff mbox series

Patch

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);