From mboxrd@z Thu Jan 1 00:00:00 1970 From: tj@kernel.org (Tejun Heo) Date: Mon, 7 Oct 2013 14:10:43 -0400 Subject: [PATCH RFC 05/77] PCI/MSI: Convert pci_msix_table_size() to a public interface In-Reply-To: References: Message-ID: <20131007181043.GA27396@htj.dyndns.org> Hello, On Wed, Oct 02, 2013@12:48:21PM +0200, Alexander Gordeev wrote: > Make pci_msix_table_size() to return a error code if the device > does not support MSI-X. This update is needed to facilitate a > forthcoming re-design MSI/MSI-X interrupts enabling pattern. > > Device drivers will use this interface to obtain maximum number > of MSI-X interrupts the device supports and use that value in > the following call to pci_enable_msix() interface. > > Signed-off-by: Alexander Gordeev Hmmm... I probably missed something but why is this necessary? To discern between -EINVAL and -ENOSPC? If so, does that really matter? Thanks. -- tejun