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From: "Iván Ezequiel Rodriguez" <ivanrwcm25@gmail.com>
To: Bartosz Golaszewski <brgl@kernel.org>
Cc: "Linus Walleij" <linusw@kernel.org>,
	"Kent Gibson" <warthog618@gmail.com>,
	linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Iván Ezequiel Rodriguez" <ivanrwcm25@gmail.com>
Subject: [PATCH v1 0/1] gpio: cdev: EOPNOTSUPP when HTE unavailable
Date: Mon, 31 Aug 2026 12:23:05 -0300	[thread overview]
Message-ID: <20260831152306.166630-1-ivanrwcm25@gmail.com> (raw)

Hi,

When CONFIG_HTE is enabled but hte_ts_get() returns -ENODEV (no HTE
provider for the line), gpiolib-cdev currently propagates -ENODEV to
userspace.

Map that to -EOPNOTSUPP so it matches the errno already returned when
CONFIG_HTE is disabled or GPIO_V2_LINE_FLAG_EVENT_CLOCK_HTE is
otherwise unsupported.

Base: v7.3-rc1

Tested: built with CONFIG_GPIOLIB=y, CONFIG_GPIO_CDEV=y, CONFIG_HTE=y.
QEMU smoke for the HTE ioctl path was skipped (no gpiochip0 in this
guest); the change is a one-line errno remap on the existing error
path.

Thanks,
Iván

Iván Ezequiel Rodriguez (1):
  gpio: cdev: return EOPNOTSUPP when HTE is unavailable

 drivers/gpio/gpiolib-cdev.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
2.43.0

             reply	other threads:[~2026-08-31 15:23 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-31 15:23 Iván Ezequiel Rodriguez [this message]
2026-08-31 15:23 ` [PATCH v1 1/1] gpio: cdev: return EOPNOTSUPP when HTE is unavailable Iván Ezequiel Rodriguez
2026-09-02 10:37   ` Bartosz Golaszewski

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