diff options
| author | Samuel Holland <samuel@sholland.org> | 2022-11-13 19:57:48 -0600 |
|---|---|---|
| committer | Jernej Skrabec <jernej.skrabec@gmail.com> | 2022-11-16 19:28:48 +0100 |
| commit | 077686da0e2162c4ea5ae0df205849c2a7a84479 (patch) | |
| tree | a3524681fa046f06f413fbe46f721fdc83d56ed2 /Documentation | |
| parent | 5f4696ddca4b8a0bbbc36bd46829f97aab5a4552 (diff) | |
| download | linux-stable-077686da0e2162c4ea5ae0df205849c2a7a84479.tar.gz linux-stable-077686da0e2162c4ea5ae0df205849c2a7a84479.tar.bz2 linux-stable-077686da0e2162c4ea5ae0df205849c2a7a84479.zip | |
bus: sunxi-rsb: Support atomic transfers
When communicating with a PMIC during system poweroff (pm_power_off()),
IRQs are disabled and we are in a RCU read-side critical section, so we
cannot use wait_for_completion_io_timeout(). Instead, poll the status
register for transfer completion.
Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20221114015749.28490-3-samuel@sholland.org
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions