linux-kernel - [PATCH v1 2/8] ACPI: LPSS: Refactor _UID handling to use acpi_dev_uid_to

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Message-Id: <20220907164606.65742-3-andriy.shevchenko@linux.intel.com>
Date:   Wed,  7 Sep 2022 19:46:00 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-efi@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        devel@...ica.org
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, Ard Biesheuvel <ardb@...nel.org>,
        Elie Morisse <syniurge@...il.com>,
        Nehal Shah <nehal-bakulchandra.shah@....com>,
        Shyam Sundar S K <shyam-sundar.s-k@....com>,
        Khalil Blaiech <kblaiech@...dia.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Mark Brown <broonie@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        Wolfram Sang <wsa@...nel.org>
Subject: [PATCH v1 2/8] ACPI: LPSS: Refactor _UID handling to use acpi_dev_uid_to_integer()

ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as
an integer. Use it instead of custom approach.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/acpi/acpi_lpss.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 4f6cba8fe8de..9dc7defcc425 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -167,10 +167,10 @@ static struct pwm_lookup byt_pwm_lookup[] = {
 
 static void byt_pwm_setup(struct lpss_private_data *pdata)
 {
-	struct acpi_device *adev = pdata->adev;
+	u64 uid;
 
 	/* Only call pwm_add_table for the first PWM controller */
-	if (!adev->pnp.unique_id || strcmp(adev->pnp.unique_id, "1"))
+	if (acpi_dev_uid_to_integer(pdata->adev, &uid) || uid != 1)
 		return;
 
 	pwm_add_table(byt_pwm_lookup, ARRAY_SIZE(byt_pwm_lookup));
@@ -180,14 +180,13 @@ static void byt_pwm_setup(struct lpss_private_data *pdata)
 
 static void byt_i2c_setup(struct lpss_private_data *pdata)
 {
-	const char *uid_str = acpi_device_uid(pdata->adev);
 	acpi_handle handle = pdata->adev->handle;
 	unsigned long long shared_host = 0;
 	acpi_status status;
-	long uid = 0;
+	u64 uid;
 
-	/* Expected to always be true, but better safe then sorry */
-	if (uid_str && !kstrtol(uid_str, 10, &uid) && uid) {
+	/* Expected to always be successfull, but better safe then sorry */
+	if (!acpi_dev_uid_to_integer(pdata->adev, &uid) && uid) {
 		/* Detect I2C bus shared with PUNIT and ignore its d3 status */
 		status = acpi_evaluate_integer(handle, "_SEM", NULL, &shared_host);
 		if (ACPI_SUCCESS(status) && shared_host)
@@ -211,10 +210,10 @@ static struct pwm_lookup bsw_pwm_lookup[] = {
 
 static void bsw_pwm_setup(struct lpss_private_data *pdata)
 {
-	struct acpi_device *adev = pdata->adev;
+	u64 uid;
 
 	/* Only call pwm_add_table for the first PWM controller */
-	if (!adev->pnp.unique_id || strcmp(adev->pnp.unique_id, "1"))
+	if (acpi_dev_uid_to_integer(pdata->adev, &uid) || uid != 1)
 		return;
 
 	pwm_add_table(bsw_pwm_lookup, ARRAY_SIZE(bsw_pwm_lookup));
-- 
2.35.1