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| author | Dongliang Mu <mudongliangabcd@gmail.com> | 2021-09-25 23:14:32 +0800 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2021-10-07 20:39:17 +0200 |
| commit | 4ed2f3545c2e5acfbccd7f85fea5b1a82e9862d7 (patch) | |
| tree | 25adad4715b32445511c268ef990900c524d6f92 /drivers | |
| parent | 13f995ceb4e0d669e293aedaaaea07e7b8a5792a (diff) | |
| download | linux-stable-4ed2f3545c2e5acfbccd7f85fea5b1a82e9862d7.tar.gz linux-stable-4ed2f3545c2e5acfbccd7f85fea5b1a82e9862d7.tar.bz2 linux-stable-4ed2f3545c2e5acfbccd7f85fea5b1a82e9862d7.zip | |
memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/memory/fsl_ifc.c | 13 |
1 files 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); |