[PATCH 6/7] hwrng: ingenic - don't disable the rng in ingenic_trng_remove

[Martin Kaiser]

There's no need to disable the rng in ingenic_trng_remove.

The driver's init function sets the CFG_GEN_EN bit to enable the
rng. The cleanup function clears CFG_GEN_EN to revert this.

The remove function calls hwrng_unregister. If the ingenic-trng is not
the current rng at this point, CFG_GEN_EN has already been cleared. If
the ingenic-trng is the current rng, drop_current_rng will call the
cleanup function.

Signed-off-by: Martin Kaiser <martin at kaiser.cx>
---
 drivers/char/hw_random/ingenic-trng.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/char/hw_random/ingenic-trng.c b/drivers/char/hw_random/ingenic-trng.c
index cc88a941c929..9c54721f8399 100644
--- a/drivers/char/hw_random/ingenic-trng.c
+++ b/drivers/char/hw_random/ingenic-trng.c
@@ -111,14 +111,9 @@ static int ingenic_trng_probe(struct platform_device *pdev)
 static int ingenic_trng_remove(struct platform_device *pdev)
 {
 	struct ingenic_trng *trng = platform_get_drvdata(pdev);
-	unsigned int ctrl;
 
 	hwrng_unregister(&trng->rng);
 
-	ctrl = readl(trng->base + TRNG_REG_CFG_OFFSET);
-	ctrl &= ~CFG_GEN_EN;
-	writel(ctrl, trng->base + TRNG_REG_CFG_OFFSET);
-
 	return 0;
 }
 
-- 
2.30.2