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| author | Samuel Holland <samuel@sholland.org> | 2022-11-13 19:57:48 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-08 11:16:29 +0100 |
| commit | 6d8664d4590cb6e06f0100bb3def9a1dc289fd36 (patch) | |
| tree | d51ed22d5c223d7273985a3b0a63b25b6a42f41f /arch | |
| parent | 98a2e5387b64c3eb1183cdc1b4525abc3aec6768 (diff) | |
| download | linux-stable-6d8664d4590cb6e06f0100bb3def9a1dc289fd36.tar.gz linux-stable-6d8664d4590cb6e06f0100bb3def9a1dc289fd36.tar.bz2 linux-stable-6d8664d4590cb6e06f0100bb3def9a1dc289fd36.zip | |
bus: sunxi-rsb: Support atomic transfers
[ Upstream commit 077686da0e2162c4ea5ae0df205849c2a7a84479 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions