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scsi: jazz_esp: Add IRQ check 

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/594aa9ae-2215-49f6-f73c-33bd38989912@omprussia.ru
Fixes: 352e921f0d ("[SCSI] jazz_esp: converted to use esp_core")
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 20:43:23 +03:00 committed by Martin K. Petersen
parent 6c11dc0604
commit 38fca15c29
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/jazz_esp.c
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@ -143,7 +143,9 @@ static int esp_jazz_probe(struct platform_device *dev)
if (!esp->command_block)
goto fail_unmap_regs;
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, "ESP", esp);
if (err < 0)
goto fail_unmap_command_block;