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authorJames Kelly <jamespeterkelly@gmail.com>2018-05-15 10:59:58 +1000
committerMark Brown <broonie@kernel.org>2018-05-17 16:11:41 +0900
commiteb4a219d19fde99616f120f5655a7121c918cd49 (patch)
tree09ab0bfd69f7357b1f556006a94f188f86d56c19
parente241e3f2bf975788a1b70dff2eb5180ca395b28e (diff)
downloadlinux-eb4a219d19fde99616f120f5655a7121c918cd49.tar.gz
regmap: Skip clk_put for attached clocks when freeing context
Capability to attach an existing clk to a MMIO regmap was
introduced in 4.17rc1.

However, when using attached clk, regmap does not do the clk_get.
Therefore it should not do the clk_put when freeing the MMIO
regmap context.

There does not appear to be any users of attached clocks yet
so this would be a good time to make this change before anything
depends on the existing behaviour.

Signed-off-by: James Kelly <jamespeterkelly@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--drivers/base/regmap/regmap-mmio.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c
index 5cadfd3394d8..8741fb5f8f54 100644
--- a/drivers/base/regmap/regmap-mmio.c
+++ b/drivers/base/regmap/regmap-mmio.c
@@ -206,7 +206,8 @@ static void regmap_mmio_free_context(void *context)
 
 	if (!IS_ERR(ctx->clk)) {
 		clk_unprepare(ctx->clk);
-		clk_put(ctx->clk);
+		if (!ctx->attached_clk)
+			clk_put(ctx->clk);
 	}
 	kfree(context);
 }