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From: Nuno Sa <nuno.sa@analog.com>
Date: Thu, 6 Jun 2024 09:22:37 +0200
Subject: [PATCH v3 1/4] dev_printk: add new dev_err_probe() helpers
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Message-ID: <20240606-dev-add_dev_errp_probe-v3-1-51bb229edd79@analog.com>
References: <20240606-dev-add_dev_errp_probe-v3-0-51bb229edd79@analog.com>
In-Reply-To: <20240606-dev-add_dev_errp_probe-v3-0-51bb229edd79@analog.com>
To: Petr Mladek <pmladek@suse.com>, Jonathan Cameron <jic23@kernel.org>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Olivier Moysan
	<olivier.moysan@foss.st.com>,
        Jyoti Bhayana <jbhayana@google.com>,
        Andy
 Shevchenko <andriy.shevchenko@linux.intel.com>,
        Chris Down
	<chris@chrisdown.name>,
        John Ogness <john.ogness@linutronix.de>,
        Greg
 Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andi Shyti
	<andi.shyti@kernel.org>
CC: <linux-kernel@vger.kernel.org>, <linux-iio@vger.kernel.org>

This is similar to dev_err_probe() but for cases where an ERR_PTR() or
ERR_CAST() is to be returned simplifying patterns like:

	dev_err_probe(dev, ret, ...);
	return ERR_PTR(ret)
or
	dev_err_probe(dev, PTR_ERR(ptr), ...);
	return ERR_CAST(ptr)

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
---
 include/linux/dev_printk.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/dev_printk.h b/include/linux/dev_printk.h
index ae80a303c216..ca32b5bb28eb 100644
--- a/include/linux/dev_printk.h
+++ b/include/linux/dev_printk.h
@@ -277,4 +277,12 @@ do {									\
 
 __printf(3, 4) int dev_err_probe(const struct device *dev, int err, const char *fmt, ...);
 
+/* Simple helper for dev_err_probe() when ERR_PTR() is to be returned. */
+#define dev_err_ptr_probe(dev, ___err, fmt, ...) \
+	ERR_PTR(dev_err_probe(dev, ___err, fmt, ##__VA_ARGS__))
+
+/* Simple helper for dev_err_probe() when ERR_CAST() is to be returned. */
+#define dev_err_cast_probe(dev, ___err_ptr, fmt, ...) \
+	ERR_PTR(dev_err_probe(dev, PTR_ERR(___err_ptr), fmt, ##__VA_ARGS__))
+
 #endif /* _DEVICE_PRINTK_H_ */

-- 
2.45.2