From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Nithishvelan M <mnithishvelan@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Nuno Sa <nuno.sa@analog.com>,
Michael Hennerich <Michael.Hennerich@analog.com>,
David Lechner <dlechner@baylibre.com>,
Andy Shevchenko <andy@kernel.org>,
linux-iio@vger.kernel.org, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] staging: iio: impedance-analyzer: ad5933: use guard(mutex) in ad5933_show()
Date: Mon, 19 Oct 2026 22:09:12 +0300 [thread overview]
Message-ID: <atZq2GstK_rxOgbj@ashevche-desk.local> (raw)
In-Reply-To: <20261019150248.416-1-mnithishvelan@gmail.com>
On Mon, Oct 19, 2026 at 03:02:48PM +0000, Nithishvelan M wrote:
> Use guard(mutex) to automatically manage the state lock in
> ad5933_show(). This simplifies the function by allowing direct returns
> from each switch case, eliminating the mutable return variables and
> manual mutex_unlock() calls.
...
> case AD5933_IN_PGA_GAIN:
> - len = sysfs_emit(buf, "%s\n",
> - (st->ctrl_hb & AD5933_CTRL_PGA_GAIN_1) ?
> - "1" : "0.2");
> - break;
> + return sysfs_emit(buf, "%s\n",
> + st->ctrl_hb & AD5933_CTRL_PGA_GAIN_1 ? "1" : "0.2");
You can (re-)use ridx here as well
ridx = st->ctrl_hb & AD5933_CTRL_PGA_GAIN_1;
return sysfs_emit(buf, "%s\n", ridx ? "1" : "0.2");
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-10-19 19:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 15:02 Nithishvelan M
2026-10-19 19:09 ` Andy Shevchenko [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-10-19 5:07 Nithishvelan M
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