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dmaengine: dw-edma: Release requested IRQs on failure

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If dw_edma_irq_request() fails to initialize an IRQ handler, any previously
requested IRQs will be left initialized.

Release the previously requested IRQs in the cleanup-on-error path of
dw_edma_irq_request().

Link: https://lore.kernel.org/r/20230113171409.30470-3-Sergey.Semin@baikalelectronics.ru
Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver")
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Serge Semin 2023-01-13 20:13:44 +03:00 committed by Lorenzo Pieralisi
parent 37fe46051d
commit 0278067445
1 changed files with 10 additions and 4 deletions
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14
drivers/dma/dw-edma/dw-edma-core.c
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@ -893,10 +893,8 @@ static int dw_edma_irq_request(struct dw_edma *dw,
dw_edma_interrupt_read,
IRQF_SHARED, dw->name,
&dw->irq[i]);
if (err) {
dw->nr_irqs = i;
return err;
}
if (err)
goto err_irq_free;
if (irq_get_msi_desc(irq))
get_cached_msi_msg(irq, &dw->irq[i].msi);
@ -905,6 +903,14 @@ static int dw_edma_irq_request(struct dw_edma *dw,
dw->nr_irqs = i;
}
return 0;
err_irq_free:
for (i--; i >= 0; i--) {
irq = chip->ops->irq_vector(dev, i);
free_irq(irq, &dw->irq[i]);
}
return err;
}