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usb: dwc3: qcom: add IRQ check

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[ Upstream commit 175006956740f70ca23394c58f8d7804776741bd ]

In dwc3_qcom_acpi_register_core(), the driver neglects to check the result
of platform_get_irq()'s call and blithely assigns the negative error codes
to the allocated child device's IRQ resource and then passing this resource
to platform_device_add_resources() and later causing dwc3_otg_get_irq() to
fail anyway.  Stop calling platform_device_add_resources() with the invalid
IRQ #s, so that there's less complexity in the IRQ error checking.

Fixes: 2bc02355f8 ("usb: dwc3: qcom: Add support for booting with ACPI")
Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/45fec3da-1679-5bfe-5d74-219ca3fb28e7@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sergey Shtylyov 2021-08-09 23:23:51 +03:00 committed by Greg Kroah-Hartman
parent c4e0f54a56
commit 27f102bcee
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc3/dwc3-qcom.c
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@ -610,6 +610,10 @@ static int dwc3_qcom_acpi_register_core(struct platform_device *pdev)
qcom->acpi_pdata->dwc3_core_base_size;
irq = platform_get_irq(pdev_irq, 0);
if (irq < 0) {
ret = irq;
goto out;
}
child_res[1].flags = IORESOURCE_IRQ;
child_res[1].start = child_res[1].end = irq;