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Subject[PATCH] spi: Gracefully handle power supplies with disabled PM
Date
This allows use of SPI when power management is disables, such as on
early boot;

See also: commit 31eb74318054 ("PM / runtime: Fix handling of suppliers
with disabled runtime PM")

Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
drivers/spi/spi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index ec395a6baf9c..6546564e41d0 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1212,7 +1212,7 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)

if (!was_busy && ctlr->auto_runtime_pm) {
ret = pm_runtime_get_sync(ctlr->dev.parent);
- if (ret < 0) {
+ if (ret < 0 && ret != -EACCES) {
pm_runtime_put_noidle(ctlr->dev.parent);
dev_err(&ctlr->dev, "Failed to power device: %d\n",
ret);
--
2.17.1
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