From e4c777fd8c371b2a46b7541fbd92903d700def11 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 26 Jan 2021 17:58:34 +0100 Subject: amba: Make the remove callback return void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit 3fd269e74f2feec973f45ee11d822faeda4fe284 ] All amba drivers return 0 in their remove callback. Together with the driver core ignoring the return value anyhow, it doesn't make sense to return a value here. Change the remove prototype to return void, which makes it explicit that returning an error value doesn't work as expected. This simplifies changing the core remove callback to return void, too. Reviewed-by: Ulf Hansson Reviewed-by: Arnd Bergmann Acked-by: Alexandre Belloni Acked-by: Dmitry Torokhov Acked-by: Krzysztof Kozlowski # for drivers/memory Acked-by: Mark Brown Acked-by: Linus Walleij Acked-by: Suzuki K Poulose # for hwtracing/coresight Acked-By: Vinod Koul # for dmaengine Acked-by: Guenter Roeck # for watchdog Acked-by: Wolfram Sang # for I2C Acked-by: Takashi Iwai # for sound Acked-by: Vladimir Zapolskiy # for memory/pl172 Acked-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20210126165835.687514-5-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Sasha Levin --- drivers/rtc/rtc-pl030.c | 4 +--- drivers/rtc/rtc-pl031.c | 4 +--- 2 files changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers/rtc') diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index ebe03eba8f5f..87c93843d62a 100644 --- a/drivers/rtc/rtc-pl030.c +++ b/drivers/rtc/rtc-pl030.c @@ -137,7 +137,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) return ret; } -static int pl030_remove(struct amba_device *dev) +static void pl030_remove(struct amba_device *dev) { struct pl030_rtc *rtc = amba_get_drvdata(dev); @@ -146,8 +146,6 @@ static int pl030_remove(struct amba_device *dev) free_irq(dev->irq[0], rtc); iounmap(rtc->base); amba_release_regions(dev); - - return 0; } static struct amba_id pl030_ids[] = { diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index d4b2ab786126..2f5581ea26fe 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -280,7 +280,7 @@ static int pl031_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) return 0; } -static int pl031_remove(struct amba_device *adev) +static void pl031_remove(struct amba_device *adev) { struct pl031_local *ldata = dev_get_drvdata(&adev->dev); @@ -289,8 +289,6 @@ static int pl031_remove(struct amba_device *adev) if (adev->irq[0]) free_irq(adev->irq[0], ldata); amba_release_regions(adev); - - return 0; } static int pl031_probe(struct amba_device *adev, const struct amba_id *id) -- cgit v1.2.3 From 33c204266c12512f73ca3b6e1ec3c050e0beaf81 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Sat, 26 Mar 2022 12:42:36 -0700 Subject: rtc: check if __rtc_read_time was successful commit 915593a7a663b2ad08b895a5f3ba8b19d89d4ebf upstream. Clang static analysis reports this issue interface.c:810:8: warning: Passed-by-value struct argument contains uninitialized data now = rtc_tm_to_ktime(tm); ^~~~~~~~~~~~~~~~~~~ tm is set by a successful call to __rtc_read_time() but its return status is not checked. Check if it was successful before setting the enabled flag. Move the decl of err to function scope. Fixes: 2b2f5ff00f63 ("rtc: interface: ignore expired timers when enqueuing new timers") Signed-off-by: Tom Rix Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20220326194236.2916310-1-trix@redhat.com Signed-off-by: Greg Kroah-Hartman --- drivers/rtc/interface.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/rtc') diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 794a4f036b99..146056858135 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -807,9 +807,13 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer) struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue); struct rtc_time tm; ktime_t now; + int err; + + err = __rtc_read_time(rtc, &tm); + if (err) + return err; timer->enabled = 1; - __rtc_read_time(rtc, &tm); now = rtc_tm_to_ktime(tm); /* Skip over expired timers */ @@ -823,7 +827,6 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer) trace_rtc_timer_enqueue(timer); if (!next || ktime_before(timer->node.expires, next->expires)) { struct rtc_wkalrm alarm; - int err; alarm.time = rtc_ktime_to_tm(timer->node.expires); alarm.enabled = 1; -- cgit v1.2.3 From 2e52a294700bec7867450e912e5bf91e3503288e Mon Sep 17 00:00:00 2001 From: Jiasheng Jiang Date: Thu, 3 Mar 2022 16:50:30 +0800 Subject: rtc: wm8350: Handle error for wm8350_register_irq [ Upstream commit 43f0269b6b89c1eec4ef83c48035608f4dcdd886 ] As the potential failure of the wm8350_register_irq(), it should be better to check it and return error if fails. Also, it need not free 'wm_rtc->rtc' since it will be freed automatically. Fixes: 077eaf5b40ec ("rtc: rtc-wm8350: add support for WM8350 RTC") Signed-off-by: Jiasheng Jiang Acked-by: Charles Keepax Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20220303085030.291793-1-jiasheng@iscas.ac.cn Signed-off-by: Sasha Levin --- drivers/rtc/rtc-wm8350.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'drivers/rtc') diff --git a/drivers/rtc/rtc-wm8350.c b/drivers/rtc/rtc-wm8350.c index 2018614f258f..6eaa9321c074 100644 --- a/drivers/rtc/rtc-wm8350.c +++ b/drivers/rtc/rtc-wm8350.c @@ -432,14 +432,21 @@ static int wm8350_rtc_probe(struct platform_device *pdev) return ret; } - wm8350_register_irq(wm8350, WM8350_IRQ_RTC_SEC, + ret = wm8350_register_irq(wm8350, WM8350_IRQ_RTC_SEC, wm8350_rtc_update_handler, 0, "RTC Seconds", wm8350); + if (ret) + return ret; + wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC); - wm8350_register_irq(wm8350, WM8350_IRQ_RTC_ALM, + ret = wm8350_register_irq(wm8350, WM8350_IRQ_RTC_ALM, wm8350_rtc_alarm_handler, 0, "RTC Alarm", wm8350); + if (ret) { + wm8350_free_irq(wm8350, WM8350_IRQ_RTC_SEC, wm8350); + return ret; + } return 0; } -- cgit v1.2.3