Re: [PATCH] net: dsa: mv88e6xxx: fix races between lock and irq freeing

On Sun, Jul 22, 2018 at 01:04:11PM -0700, David Miller wrote: > From: Uwe Kleine-König > Date: Sun, 22 Jul 2018 21:00:35 +0200 > > > On Sat, Jul 21, 2018 at 10:44:09PM -0700, David Miller wrote: > >> From: Uwe Kleine-König > >> Date: Fri, 20 Jul 2018 11:53:15 +0200 > >> > >> > free_irq() waits

Re: [PATCH] net: dsa: mv88e6xxx: fix races between lock and irq freeing

From: Uwe Kleine-König Date: Sun, 22 Jul 2018 21:00:35 +0200 > On Sat, Jul 21, 2018 at 10:44:09PM -0700, David Miller wrote: >> From: Uwe Kleine-König >> Date: Fri, 20 Jul 2018 11:53:15 +0200 >> >> > free_irq() waits until all handlers for this IRQ have completed. As the >> > relevant handler

Re: [PATCH] net: dsa: mv88e6xxx: fix races between lock and irq freeing

Hello, On Sat, Jul 21, 2018 at 10:44:09PM -0700, David Miller wrote: > From: Uwe Kleine-König > Date: Fri, 20 Jul 2018 11:53:15 +0200 > > > free_irq() waits until all handlers for this IRQ have completed. As the > > relevant handler (mv88e6xxx_g1_irq_thread_fn()) takes the chip's reg_lock > >

Re: [PATCH] net: dsa: mv88e6xxx: fix races between lock and irq freeing

From: Uwe Kleine-König Date: Fri, 20 Jul 2018 11:53:15 +0200 > free_irq() waits until all handlers for this IRQ have completed. As the > relevant handler (mv88e6xxx_g1_irq_thread_fn()) takes the chip's reg_lock > it might never return if the thread calling free_irq() holds this lock. > > For