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drivers: Introduce device lookup variants by name

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Add a helper to match the device name for device lookup. Also
reuse this generic exported helper for the existing bus_find_device_by_name().
and add similar variants for driver/class.

Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Harald Freudenberger <freude@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: linux-leds@vger.kernel.org
Cc: linux-rtc@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wpan@vger.kernel.org
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Stefan Schmidt <stefan@datenfreihafen.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20190723221838.12024-2-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose
2019-07-23 23:18:32 +01:00
committed by Greg Kroah-Hartman
parent 5f9e832c13
commit 6cda08a20d
12 changed files with 54 additions and 106 deletions
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11
drivers/rtc/interface.c
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@@ -663,21 +663,12 @@ void rtc_update_irq(struct rtc_device *rtc,
}
EXPORT_SYMBOL_GPL(rtc_update_irq);
static int __rtc_match(struct device *dev, const void *data)
{
const char *name = data;
if (strcmp(dev_name(dev), name) == 0)
return 1;
return 0;
}
struct rtc_device *rtc_class_open(const char *name)
{
struct device *dev;
struct rtc_device *rtc = NULL;
dev = class_find_device(rtc_class, NULL, name, __rtc_match);
dev = class_find_device_by_name(rtc_class, name);
if (dev)
rtc = to_rtc_device(dev);