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scsi: sun3x_esp: Add IRQ check

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The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #), causing it to fail with -EINVAL, overriding the real
error code.  Stop calling request_irq() with the invalid IRQ #s.

Link: https://lore.kernel.org/r/363eb4c8-a3bf-4dc9-2a9e-90f349030a15@omprussia.ru
Fixes: 0bb67f181834 ("[SCSI] sun3x_esp: convert to esp_scsi")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sergey Shtylyov 2021-03-30 20:44:08 +03:00 committed by Martin K. Petersen
parent 38fca15c29
commit 14b321380e
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/sun3x_esp.c
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@ -206,7 +206,9 @@ static int esp_sun3x_probe(struct platform_device *dev)
if (!esp->command_block)
goto fail_unmap_regs_dma;
host->irq = platform_get_irq(dev, 0);
host->irq = err = platform_get_irq(dev, 0);
if (err < 0)
goto fail_unmap_command_block;
err = request_irq(host->irq, scsi_esp_intr, IRQF_SHARED,
"SUN3X ESP", esp);
if (err < 0)