From: <gregkh@linuxfoundation.org>
To: dmitry.torokhov@gmail.com,Jonathan.Cameron@huawei.com,Stable@vger.kernel.org,dlechner@baylibre.com
Cc: <stable@vger.kernel.org>
Subject: FAILED: patch "[PATCH] iio: adc: ti-ads7950: do not clobber gpio state in" failed to apply to 6.1-stable tree
Date: Tue, 07 Apr 2026 17:22:51 +0200 [thread overview]
Message-ID: <2026040751-cornstalk-hacking-02be@gregkh> (raw)
The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x d20bbae6e5d408a8a7c2a4344d76dd1ac557a149
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026040751-cornstalk-hacking-02be@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From d20bbae6e5d408a8a7c2a4344d76dd1ac557a149 Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Thu, 5 Mar 2026 11:21:53 -0800
Subject: [PATCH] iio: adc: ti-ads7950: do not clobber gpio state in
ti_ads7950_get()
GPIO state was inadvertently overwritten by the result of spi_sync(),
resulting in ti_ads7950_get() only returning 0 as GPIO state (or error).
Fix this by introducing a separate variable to hold the state.
Fixes: c97dce792dc8 ("iio: adc: ti-ads7950: add GPIO support")
Reported-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
diff --git a/drivers/iio/adc/ti-ads7950.c b/drivers/iio/adc/ti-ads7950.c
index b8cc39fc39fb..cdc624889559 100644
--- a/drivers/iio/adc/ti-ads7950.c
+++ b/drivers/iio/adc/ti-ads7950.c
@@ -427,13 +427,15 @@ static int ti_ads7950_set(struct gpio_chip *chip, unsigned int offset,
static int ti_ads7950_get(struct gpio_chip *chip, unsigned int offset)
{
struct ti_ads7950_state *st = gpiochip_get_data(chip);
+ bool state;
int ret;
mutex_lock(&st->slock);
/* If set as output, return the output */
if (st->gpio_cmd_settings_bitmask & BIT(offset)) {
- ret = (st->cmd_settings_bitmask & BIT(offset)) ? 1 : 0;
+ state = st->cmd_settings_bitmask & BIT(offset);
+ ret = 0;
goto out;
}
@@ -444,7 +446,7 @@ static int ti_ads7950_get(struct gpio_chip *chip, unsigned int offset)
if (ret)
goto out;
- ret = ((st->single_rx >> 12) & BIT(offset)) ? 1 : 0;
+ state = (st->single_rx >> 12) & BIT(offset);
/* Revert back to original settings */
st->cmd_settings_bitmask &= ~TI_ADS7950_CR_GPIO_DATA;
@@ -456,7 +458,7 @@ static int ti_ads7950_get(struct gpio_chip *chip, unsigned int offset)
out:
mutex_unlock(&st->slock);
- return ret;
+ return ret ?: state;
}
static int ti_ads7950_get_direction(struct gpio_chip *chip,
reply other threads:[~2026-04-07 15:26 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2026040751-cornstalk-hacking-02be@gregkh \
--to=gregkh@linuxfoundation.org \
--cc=Jonathan.Cameron@huawei.com \
--cc=Stable@vger.kernel.org \
--cc=dlechner@baylibre.com \
--cc=dmitry.torokhov@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.