Re: [PATCH] scsi/ipr: Fix runaway IRQs when falling back from MSI to LSI
From: Martin K. Petersen <hidden>
Date: 2016-11-29 16:59:05
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linux-scsi, lkml
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"Benjamin" == Benjamin Herrenschmidt [off-list ref] writes:
Benjamin> LSIs must be ack'ed with an MMIO otherwise they remain Benjamin> asserted forever. This is controlled by the "clear_isr" flag. Benjamin> While we set that flag properly when deciding initially Benjamin> whether to use LSIs or MSIs, we fail to set it if we first Benjamin> chose MSIs, the test fails, then fallback to LSIs. Brian: Please review! -- Martin K. Petersen Oracle Linux Engineering