The patch spi: fsl-cpm: Correct the free:ing has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-5.4 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From c5923243eb3208ea63b5ed7905610039c4ca5201 Mon Sep 17 00:00:00 2001 From: Linus Walleij <linus.walleij@xxxxxxxxxx> Date: Wed, 13 Nov 2019 02:44:42 +0100 Subject: [PATCH] spi: fsl-cpm: Correct the free:ing The fsl_spi_cpm_free() function does not make the same checks as the error path in fsl_spi_cpm_init() leading to crashes on error. Cc: Fabio Estevam <festevam@xxxxxxxxx> Reported-by: Christophe Leroy <christophe.leroy@xxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Link: https://lore.kernel.org/r/20191113014442.12100-1-linus.walleij@xxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- drivers/spi/spi-fsl-cpm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-fsl-cpm.c b/drivers/spi/spi-fsl-cpm.c index 858f0544289e..54ad0ac121e5 100644 --- a/drivers/spi/spi-fsl-cpm.c +++ b/drivers/spi/spi-fsl-cpm.c @@ -392,7 +392,8 @@ void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) dma_unmap_single(dev, mspi->dma_dummy_rx, SPI_MRBLR, DMA_FROM_DEVICE); dma_unmap_single(dev, mspi->dma_dummy_tx, PAGE_SIZE, DMA_TO_DEVICE); cpm_muram_free(cpm_muram_offset(mspi->tx_bd)); - cpm_muram_free(cpm_muram_offset(mspi->pram)); + if (!(mspi->flags & SPI_CPM1)) + cpm_muram_free(cpm_muram_offset(mspi->pram)); fsl_spi_free_dummy_rx(); } EXPORT_SYMBOL_GPL(fsl_spi_cpm_free); -- 2.20.1