From: Dongliang Mu <mudongliangabcd@gmail.com> stable inclusion from stable-5.10.80 commit 20cc0fa1d030aa49e268a23e71c7f1110f3060fa bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 4ed2f3545c2e5acfbccd7f85fea5b1a82e9862d7 ] The error handling code of fsl_ifc_ctrl_probe is problematic. When fsl_ifc_ctrl_init fails or request_irq of fsl_ifc_ctrl_dev->irq fails, it forgets to free the irq and nand_irq. Meanwhile, if request_irq of fsl_ifc_ctrl_dev->nand_irq fails, it will still free nand_irq even if the request_irq is not successful. Fix this by refactoring the error handling code. Fixes: d2ae2e20fbdd ("driver/memory:Move Freescale IFC driver to a common driver") Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com> Link: https://lore.kernel.org/r/20210925151434.8170-1-mudongliangabcd@gmail.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Reviewed-by: Weilong Chen <chenweilong@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/memory/fsl_ifc.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/memory/fsl_ifc.c b/drivers/memory/fsl_ifc.c index d062c2f8250f..75a8c38df939 100644 --- a/drivers/memory/fsl_ifc.c +++ b/drivers/memory/fsl_ifc.c @@ -263,7 +263,7 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) ret = fsl_ifc_ctrl_init(fsl_ifc_ctrl_dev); if (ret < 0) - goto err; + goto err_unmap_nandirq; init_waitqueue_head(&fsl_ifc_ctrl_dev->nand_wait); @@ -272,7 +272,7 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) if (ret != 0) { dev_err(&dev->dev, "failed to install irq (%d)\n", fsl_ifc_ctrl_dev->irq); - goto err_irq; + goto err_unmap_nandirq; } if (fsl_ifc_ctrl_dev->nand_irq) { @@ -281,17 +281,16 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) if (ret != 0) { dev_err(&dev->dev, "failed to install irq (%d)\n", fsl_ifc_ctrl_dev->nand_irq); - goto err_nandirq; + goto err_free_irq; } } return 0; -err_nandirq: - free_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_ctrl_dev); - irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq); -err_irq: +err_free_irq: free_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_dev); +err_unmap_nandirq: + irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq); irq_dispose_mapping(fsl_ifc_ctrl_dev->irq); err: iounmap(fsl_ifc_ctrl_dev->gregs); -- 2.20.1