Re: [PATCH] usb: serial: digi_accelport: fix crash on SPARC

On Tue, Aug 04, 2026 at 12:51:50PM +0200, Oliver Neukum wrote:
> The helper function cond_wait_interruptible_timeout_irqrestore()
> reenables interrupts. It does so by means of the flags saved
> by spin_lock_irqsave() in the caller.
> On SPARC these flags can be used only inside the same stack
> frame. Details can be found in
> 
> https://www.kernel.org/pub/linux/kernel/people/rusty/kernel-locking/x467.html
> 
> If the compiler decides to not inline the helper function,
> the kernel will crash on SPARC if the helper is executed.

I too had seen that comment about the messed up SPARC, but some years
back I looked into it and concluded that this hasn't been the case for a
very long time.

Specifically, the comment you refer to was removed from the in-tree
version of that document in 2004 after SPARC was fixed.

Johan