[PATCH] spi: dw-pci: free previously allocated IRQs if desc->setup() fails

[PATCH] spi: dw-pci: free previously allocated IRQs if desc->setup() fails

[Jay Fang]

Free previously allocated IRQs when return an error code of desc->setup()
which is not always successful. And simplify the code by adding a goto
label.

Fixes: 8f5c285f3ef5 ("SPI: designware: pci: Switch over to MSI interrupts")
CC: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Jay Fang <f.fangjian@huawei.com>
---
 drivers/spi/spi-dw-pci.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
index 2ea7380..271839a 100644
--- a/drivers/spi/spi-dw-pci.c
+++ b/drivers/spi/spi-dw-pci.c
@@ -127,18 +127,16 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		if (desc->setup) {
 			ret = desc->setup(dws);
 			if (ret)
-				return ret;
+				goto err_free_irq_vectors;
 		}
 	} else {
-		pci_free_irq_vectors(pdev);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err_free_irq_vectors;
 	}
 
 	ret = dw_spi_add_host(&pdev->dev, dws);
-	if (ret) {
-		pci_free_irq_vectors(pdev);
-		return ret;
-	}
+	if (ret)
+		goto err_free_irq_vectors;
 
 	/* PCI hook and SPI hook use the same drv data */
 	pci_set_drvdata(pdev, dws);
@@ -152,6 +150,10 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	pm_runtime_allow(&pdev->dev);
 
 	return 0;
+
+err_free_irq_vectors:
+	pci_free_irq_vectors(pdev);
+	return ret;
 }
 
 static void spi_pci_remove(struct pci_dev *pdev)
-- 
2.7.4

Re: [PATCH] spi: dw-pci: free previously allocated IRQs if desc->setup() fails

[Mark Brown]

On Tue, 15 Sep 2020 09:22:49 +0800, Jay Fang wrote:
> Free previously allocated IRQs when return an error code of desc->setup()
> which is not always successful. And simplify the code by adding a goto
> label.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: dw-pci: free previously allocated IRQs if desc->setup() fails
      commit: 9599f341889c87e56bb944659c32490d05e2532f

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