This is a note to let you know that I've just added the patch titled
regulator: stm32-vrefbuf: fix check on ready flag
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: regulator-stm32-vrefbuf-fix-check-on-ready-flag.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From f63248fac563125fd5a2f0bc780ce7a299872cab Mon Sep 17 00:00:00 2001
From: Fabrice Gasnier fabrice.gasnier@st.com Date: Thu, 8 Feb 2018 14:43:05 +0100 Subject: regulator: stm32-vrefbuf: fix check on ready flag
From: Fabrice Gasnier fabrice.gasnier@st.com
commit f63248fac563125fd5a2f0bc780ce7a299872cab upstream.
stm32_vrefbuf_enable() wrongly checks VRR bit: 0 stands for not ready, 1 for ready. It currently checks the opposite. This makes enable routine to exit immediately without waiting for ready flag.
Fixes: 0cdbf481e927 ("regulator: Add support for stm32-vrefbuf") Signed-off-by: Fabrice Gasnier fabrice.gasnier@st.com Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/regulator/stm32-vrefbuf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/regulator/stm32-vrefbuf.c +++ b/drivers/regulator/stm32-vrefbuf.c @@ -51,7 +51,7 @@ static int stm32_vrefbuf_enable(struct r * arbitrary timeout. */ ret = readl_poll_timeout(priv->base + STM32_VREFBUF_CSR, val, - !(val & STM32_VRR), 650, 10000); + val & STM32_VRR, 650, 10000); if (ret) { dev_err(&rdev->dev, "stm32 vrefbuf timed out!\n"); val = readl_relaxed(priv->base + STM32_VREFBUF_CSR);
Patches currently in stable-queue which might be from fabrice.gasnier@st.com are
queue-4.15/regulator-stm32-vrefbuf-fix-check-on-ready-flag.patch