Re: [PATCH 4.19 83/92] mfd: dln2: Run event handler loop under spinlock

On Fri, Aug 21, 2020 at 10:26 AM Pavel Machek pavel@denx.de wrote:

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From: Andy Shevchenko andriy.shevchenko@linux.intel.com

[ Upstream commit 3d858942250820b9adc35f963a257481d6d4c81d ]

The event handler loop must be run with interrupts disabled. Otherwise we will have a warning:

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Recently xHCI driver switched to tasklets in the commit 36dc01657b49 ("usb: host: xhci: Support running urb giveback in tasklet context").

AFAICT, 36dc01657b49 is not included in 4.19.141, so this commit should not be needed, either.

I'm wondering if there are any other USB host controller drivers that use URB giveback in interrupt enabled context.