6.6-stable review patch. If anyone has any objections, please let me know.
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From: Haotian Zhang vulab@iscas.ac.cn
[ Upstream commit cdf44f1add4ec9ee80569d5a43e6e9bba0d74c7a ]
The driver calls gpiod_get_optional() in the probe function but never calls gpiod_put() in the remove function or in the probe error path. This leads to a GPIO descriptor resource leak. The lpc32xx_mlc.c driver in the same directory handles this correctly by calling gpiod_put() on both paths.
Add gpiod_put() in the remove function and in the probe error path to fix the resource leak.
Fixes: 6b923db2867c ("mtd: rawnand: lpc32xx_slc: switch to using gpiod API") Signed-off-by: Haotian Zhang vulab@iscas.ac.cn Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/nand/raw/lpc32xx_slc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index 1c5fa855b9f2d..8abad092b0580 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -933,6 +933,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) dma_release_channel(host->dma_chan); enable_wp: lpc32xx_wp_enable(host); + gpiod_put(host->wp_gpio);
return res; } @@ -958,6 +959,7 @@ static void lpc32xx_nand_remove(struct platform_device *pdev) writel(tmp, SLC_CTRL(host->io_base));
lpc32xx_wp_enable(host); + gpiod_put(host->wp_gpio); }
static int lpc32xx_nand_resume(struct platform_device *pdev)