lkml.org 
[lkml]   [2022]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[patch 01/39] PCI/MSI: Check for MSI enabled in __pci_msix_enable()
    Date
    PCI/MSI and PCI/MSI-X are mutually exclusive, but the MSI-X enable code
    lacks a check for already enabled MSI.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    ---
    drivers/pci/msi/msi.c | 5 +++++
    1 file changed, 5 insertions(+)

    --- a/drivers/pci/msi/msi.c
    +++ b/drivers/pci/msi/msi.c
    @@ -935,6 +935,11 @@ static int __pci_enable_msix_range(struc
    if (maxvec < minvec)
    return -ERANGE;

    + if (dev->msi_enabled) {
    + pci_info(dev, "can't enable MSI-X (MSI already enabled)\n");
    + return -EINVAL;
    + }
    +
    if (WARN_ON_ONCE(dev->msix_enabled))
    return -EINVAL;

    \
     
     \ /
      Last update: 2022-11-11 14:55    [W:2.100 / U:0.412 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site