The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 234266a5168bbe8220d263e3aa7aa80cf921c483 Mon Sep 17 00:00:00 2001
From: Lukas Wunner lukas@wunner.de Date: Mon, 7 Dec 2020 09:17:16 +0100 Subject: [PATCH] spi: npcm-fiu: Disable clock in probe error path
If the call to devm_spi_register_master() fails on probe of the NPCM FIU SPI driver, the clock "fiu->clk" is erroneously not unprepared and disabled. Fix it.
Fixes: ace55c411b11 ("spi: npcm-fiu: add NPCM FIU controller driver") Signed-off-by: Lukas Wunner lukas@wunner.de Cc: stable@vger.kernel.org # v5.4+ Cc: Tomer Maimon tmaimon77@gmail.com Link: https://lore.kernel.org/r/9ae62f4e1cfe542bec57ac2743e6fca9f9548f55.160728688... Signed-off-by: Mark Brown broonie@kernel.org
diff --git a/drivers/spi/spi-npcm-fiu.c b/drivers/spi/spi-npcm-fiu.c index 1cb9329de945..b62471ab6d7f 100644 --- a/drivers/spi/spi-npcm-fiu.c +++ b/drivers/spi/spi-npcm-fiu.c @@ -677,7 +677,7 @@ static int npcm_fiu_probe(struct platform_device *pdev) struct npcm_fiu_spi *fiu; void __iomem *regbase; struct resource *res; - int id; + int id, ret;
ctrl = devm_spi_alloc_master(dev, sizeof(*fiu)); if (!ctrl) @@ -735,7 +735,11 @@ static int npcm_fiu_probe(struct platform_device *pdev) ctrl->num_chipselect = fiu->info->max_cs; ctrl->dev.of_node = dev->of_node;
- return devm_spi_register_master(dev, ctrl); + ret = devm_spi_register_master(dev, ctrl); + if (ret) + clk_disable_unprepare(fiu->clk); + + return ret; }
static int npcm_fiu_remove(struct platform_device *pdev)