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usb: gadget: udc: gr_udc: Fix deferred probing 

When platform_get_irq() fails, it may return -EPROBE_DEFER, which
suggested deferred probing, it is very important to propagate it
upstream. We cannot override it with other error code.

Commit ce753ad154 ("platform: finally disallow IRQ0 in
platform_get_irq() and its ilk") makes sure IRQ0 is not returned.

Signed-off-by: Zhu Wang <wangzhu9@huawei.com>
Link: https://lore.kernel.org/r/20230804110005.97061-1-wangzhu9@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhu Wang 2023-08-04 19:00:05 +08:00 committed by Greg Kroah-Hartman
parent d3af2f4c04
commit 4f4bda58c5
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/gadget/udc/gr_udc.c
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@ -2136,15 +2136,15 @@ static int gr_probe(struct platform_device *pdev)
return PTR_ERR(regs);
dev->irq = platform_get_irq(pdev, 0);
if (dev->irq <= 0)
return -ENODEV;
if (dev->irq < 0)
return dev->irq;
/* Some core configurations has separate irqs for IN and OUT events */
dev->irqi = platform_get_irq(pdev, 1);
if (dev->irqi > 0) {
dev->irqo = platform_get_irq(pdev, 2);
if (dev->irqo <= 0)
return -ENODEV;
if (dev->irqo < 0)
return dev->irqo;
} else {
dev->irqi = 0;
}