From: William Breathitt Gray <vilhelm.gray@gmail.com>
To: jic23@kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com, kernel@pengutronix.de,
a.fatoum@pengutronix.de, kamel.bouhara@bootlin.com,
gwendal@chromium.org, alexandre.belloni@bootlin.com,
david@lechnology.com, linux-iio@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, syednwaris@gmail.com,
patrick.havelange@essensium.com, fabrice.gasnier@st.com,
mcoquelin.stm32@gmail.com, alexandre.torgue@st.com,
o.rempel@pengutronix.de, jarkko.nikula@linux.intel.com,
William Breathitt Gray <vilhelm.gray@gmail.com>
Subject: [PATCH v14 01/17] counter: 104-quad-8: Return error when invalid mode during ceiling_write
Date: Tue, 3 Aug 2021 21:06:11 +0900 [thread overview]
Message-ID: <a2147f022829b66839a1db5530a7fada47856847.1627990337.git.vilhelm.gray@gmail.com> (raw)
In-Reply-To: <cover.1627990337.git.vilhelm.gray@gmail.com>
The 104-QUAD-8 only has two count modes where a ceiling value makes
sense: Range Limit and Modulo-N. Outside of these two modes, setting a
ceiling value is an invalid operation -- so let's report it as such by
returning -EINVAL.
Fixes: fc069262261c ("counter: 104-quad-8: Add lock guards - generic interface")
Acked-by: Syed Nayyar Waris <syednwaris@gmail.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
---
drivers/counter/104-quad-8.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/counter/104-quad-8.c b/drivers/counter/104-quad-8.c
index 09a9a77cce06..81f9642777fb 100644
--- a/drivers/counter/104-quad-8.c
+++ b/drivers/counter/104-quad-8.c
@@ -715,12 +715,13 @@ static ssize_t quad8_count_ceiling_write(struct counter_device *counter,
case 1:
case 3:
quad8_preset_register_set(priv, count->id, ceiling);
- break;
+ mutex_unlock(&priv->lock);
+ return len;
}
mutex_unlock(&priv->lock);
- return len;
+ return -EINVAL;
}
static ssize_t quad8_count_preset_enable_read(struct counter_device *counter,
--
2.32.0
next prev parent reply other threads:[~2021-08-03 12:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-03 12:06 [PATCH v14 00/17] Introduce the Counter character device interface William Breathitt Gray
2021-08-03 12:06 ` William Breathitt Gray [this message]
2021-08-08 17:06 ` [PATCH v14 01/17] counter: 104-quad-8: Return error when invalid mode during ceiling_write Jonathan Cameron
2021-08-03 12:06 ` [PATCH v14 02/17] counter: Return error code on invalid modes William Breathitt Gray
2021-08-08 17:07 ` Jonathan Cameron
2021-08-03 12:06 ` [PATCH v14 03/17] counter: Standardize to ERANGE for limit exceeded errors William Breathitt Gray
2021-08-08 17:08 ` Jonathan Cameron
2021-08-03 12:06 ` [PATCH v14 04/17] counter: Rename counter_signal_value to counter_signal_level William Breathitt Gray
2021-08-08 17:10 ` Jonathan Cameron
2021-08-03 12:06 ` [PATCH v14 05/17] counter: Rename counter_count_function to counter_function William Breathitt Gray
2021-08-08 17:15 ` Jonathan Cameron
2021-08-03 12:06 ` [PATCH v14 06/17] counter: Internalize sysfs interface code William Breathitt Gray
2021-08-08 17:23 ` Jonathan Cameron
2021-08-09 3:59 ` William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 07/17] counter: Update counter.h comments to reflect sysfs internalization William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 08/17] docs: counter: Update " William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 09/17] counter: Move counter enums to uapi header William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 10/17] counter: Add character device interface William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 11/17] docs: counter: Document " William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 12/17] tools/counter: Create Counter tools William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 13/17] counter: Implement signalZ_action_component_id sysfs attribute William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 14/17] counter: Implement *_component_id sysfs attributes William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 15/17] counter: Implement events_queue_size sysfs attribute William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 16/17] counter: 104-quad-8: Replace mutex with spinlock William Breathitt Gray
2021-08-03 12:06 ` [PATCH v14 17/17] counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8 William Breathitt Gray
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