[PATCH] powerpc/irq: Don't WARN continuously in arch_local_irq_restore()

[Michael Ellerman]

On Mon, 2019-07-08 at 06:10:46 UTC, Michael Ellerman wrote:
> When CONFIG_PPC_IRQ_SOFT_MASK_DEBUG is enabled (uncommon), we have a
> series of WARN_ON's in arch_local_irq_restore().
> 
> These are "should never happen" conditions, but if they do happen they
> can flood the console and render the system unusable. So switch them
> to WARN_ON_ONCE().
> 
> Fixes: e2b36d591720 ("powerpc/64: Don't trace code that runs with the soft irq mask unreconciled")
> Fixes: 9b81c0211c24 ("powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely")
> Fixes: 7c0482e3d055 ("powerpc/irq: Fix another case of lazy IRQ state getting out of sync")
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/0fc12c022ad25532b66bf6f6c818ee1c1d63e702

cheers