PCI/MSI: Allocate MSI device data on first use

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Allocate MSI device data on first use, i.e. when a PCI driver invokes one
of the PCI/MSI enablement functions.

Add a wrapper function to ensure that the ordering vs. pcim_msi_release()
is correct.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/87r1adrdje.ffs@tglx

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This commit is contained in:

Thomas Gleixner 2021-12-15 18:19:49 +01:00

parent 3f35d2cf9f

commit 93296cd132

1 changed files with 15 additions and 2 deletions

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drivers/pci/msi/msi.c

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