Re: [PATCH 1/3] PM: runtime: Stop checking pm_runtime_barrier() return code

[Guenter Roeck]

On Tue, Dec 02, 2025 at 11:30:24AM -0800, Brian Norris wrote:
> Apparently this test is the only code that checks the return code from
> pm_runtime_barrier(), and it turns out that's for good reason -- it's
> inherently racy, and a bad idea. We're going to make
> pm_runtime_barrier() return void, so prepare for that by dropping any
> return code checks.
> 
> This resolves some test failures seen like the following:
> 
> [   34.559694]     # pm_runtime_error_test: EXPECTATION FAILED at drivers/base/power/runtime-test.c:177
> [   34.559694]     Expected 1 == pm_runtime_barrier(dev), but
> [   34.559694]         pm_runtime_barrier(dev) == 0 (0x0)
> [   34.563604]     # pm_runtime_error_test: pass:0 fail:1 skip:0 total:1
> 
> Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> Closes: https://lore.kernel.org/lkml/93259f2b-7017-4096-a31b-cabbf6152e9b@xxxxxxxxxxxx/
> Signed-off-by: Brian Norris <briannorris@xxxxxxxxxxxx>

With this series on top of v6.18:

Qemu test results:
	total: 610 pass: 610 fail: 0
Unit test results:
	pass: 666898 fail: 0

Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>

Guenter