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| author | Simon Sandström <simon@nikanor.nu> | 2019-06-19 08:36:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-20 14:39:16 +0200 |
| commit | a50185cbb383f29543a86ff238fff13ec850dbf9 (patch) | |
| tree | 81da861f9cf9c00c272730ee43412e479143c693 | |
| parent | 0234961dbc1816732025b946ebccf64f08e42b0d (diff) | |
| download | linux-stable-a50185cbb383f29543a86ff238fff13ec850dbf9.tar.gz linux-stable-a50185cbb383f29543a86ff238fff13ec850dbf9.tar.bz2 linux-stable-a50185cbb383f29543a86ff238fff13ec850dbf9.zip | |
staging: kpc2000: simplify error handling in kp2000_pcie_probe
We can get rid of a few iounmaps in the middle of the function by
re-ordering the error handling labels and adding two new labels.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/kpc2000/kpc2000/core.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/staging/kpc2000/kpc2000/core.c b/drivers/staging/kpc2000/kpc2000/core.c index 610ea549d240..cb05cca687e1 100644 --- a/drivers/staging/kpc2000/kpc2000/core.c +++ b/drivers/staging/kpc2000/kpc2000/core.c @@ -351,12 +351,11 @@ static int kp2000_pcie_probe(struct pci_dev *pdev, err = pci_request_region(pcard->pdev, REG_BAR, KP_DRIVER_NAME_KP2000); if (err) { - iounmap(pcard->regs_bar_base); dev_err(&pcard->pdev->dev, "probe: failed to acquire PCI region (%d)\n", err); err = -ENODEV; - goto err_disable_device; + goto err_unmap_regs; } pcard->regs_base_resource.start = reg_bar_phys_addr; @@ -374,7 +373,7 @@ static int kp2000_pcie_probe(struct pci_dev *pdev, dev_err(&pcard->pdev->dev, "probe: DMA_BAR could not remap memory to virtual space\n"); err = -ENODEV; - goto err_unmap_regs; + goto err_release_regs; } dev_dbg(&pcard->pdev->dev, "probe: DMA_BAR virt hardware address start [%p]\n", @@ -384,11 +383,10 @@ static int kp2000_pcie_probe(struct pci_dev *pdev, err = pci_request_region(pcard->pdev, DMA_BAR, "kp2000_pcie"); if (err) { - iounmap(pcard->dma_bar_base); dev_err(&pcard->pdev->dev, "probe: failed to acquire PCI region (%d)\n", err); err = -ENODEV; - goto err_unmap_regs; + goto err_unmap_dma; } pcard->dma_base_resource.start = dma_bar_phys_addr; @@ -400,7 +398,7 @@ static int kp2000_pcie_probe(struct pci_dev *pdev, pcard->sysinfo_regs_base = pcard->regs_bar_base; err = read_system_regs(pcard); if (err) - goto err_unmap_dma; + goto err_release_dma; // Disable all "user" interrupts because they're not used yet. writeq(0xFFFFFFFFFFFFFFFF, @@ -438,14 +436,14 @@ static int kp2000_pcie_probe(struct pci_dev *pdev, if (err) { dev_err(&pcard->pdev->dev, "CANNOT use DMA mask %0llx\n", DMA_BIT_MASK(64)); - goto err_unmap_dma; + goto err_release_dma; } dev_dbg(&pcard->pdev->dev, "Using DMA mask %0llx\n", dma_get_mask(PCARD_TO_DEV(pcard))); err = pci_enable_msi(pcard->pdev); if (err < 0) - goto err_unmap_dma; + goto err_release_dma; rv = request_irq(pcard->pdev->irq, kp2000_irq_handler, IRQF_SHARED, pcard->name, pcard); @@ -478,14 +476,14 @@ err_free_irq: free_irq(pcard->pdev->irq, pcard); err_disable_msi: pci_disable_msi(pcard->pdev); +err_release_dma: + pci_release_region(pdev, DMA_BAR); err_unmap_dma: iounmap(pcard->dma_bar_base); - pci_release_region(pdev, DMA_BAR); - pcard->dma_bar_base = NULL; +err_release_regs: + pci_release_region(pdev, REG_BAR); err_unmap_regs: iounmap(pcard->regs_bar_base); - pci_release_region(pdev, REG_BAR); - pcard->regs_bar_base = NULL; err_disable_device: pci_disable_device(pcard->pdev); err_remove_ida: |