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authorBenjamin Rood <benjaminjrood@gmail.com>2015-10-30 15:53:31 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2015-11-03 05:41:13 +0100
commitc913df3f3d6f7f5e5ed845e2786b0fc98a41482f (patch)
tree77853d04ac0b614607ba052bc6f037d4db16bda9 /scripts/cleanfile
parentpm80xx: wait a minimum of 500ms before issuing commands to SPCv (diff)
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pm80xx: avoid a panic if MSI(X) interrupts are disabled
If MSI(X) interrupts are disabled via the kernel command line (pci=nomsi), the pm8001 driver will kernel panic because it does not detect that MSI interrupts are disabled and will soldier on and attempt to configure MSI interrupts anyways. This leads to a kernel panic, most likely because a required data structure is not available down the line. Using the pci_msi_enabled() function in order to detect if MSI interrupts are enabled before configuring them resolves this issue and avoids a kernel panic when the module is loaded. Additionally, the irq_vector structure must be initialized when legacy interrupts are being used otherwise legacy interrupts will simply not function and result in another panic. Signed-off-by: Benjamin Rood <brood@attotech.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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