ipr: add test for MSI interrupt support

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The return value from pci_enable_msi() can not always be trusted.  This patch
adds code to generate an interrupt after MSI has been enabled and tests
whether or not we can receive and process it.  If the tests fails, then fall
back to LSI.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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Wayne Boyer 2009-06-16 15:13:28 -07:00 • committed by James Bottomley

parent a9e0edb687

commit 95fecd9039

2 changed files with 105 additions and 9 deletions

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108

drivers/scsi/ipr.c

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6

drivers/scsi/ipr.h

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