Re: [patch] genirq/msi: Populate sysfs entry only once

Greg Kroah-Hartman
2022-01-11T08:57:18Z

On Mon, Jan 10, 2022 at 07:12:45PM +0100, Thomas Gleixner wrote:
> The MSI entries for multi-MSI are populated en bloc for the MSI descriptor,
> but the current code invokes the population inside the per interrupt loop
> which triggers a warning in the sysfs code and causes the interrupt
> allocation to fail.
>
> Move it outside of the loop so it works correctly for single and multi-MSI.
>
> Fixes: bf5e758f02fc ("genirq/msi: Simplify sysfs handling")
> Reported-by: Borislav Petkov <bp@alien8.de>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> ---
> kernel/irq/msi.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>