6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca luizluca@gmail.com
[ Upstream commit 4f580e9aced1816398c1c64f178302a22b8ea6e2 ]
The necessity of asserting the reset on removal was previously questioned, as DSA's own cleanup methods should suffice to prevent traffic leakage[1].
When a driver has subdrivers controlled by devres, they will be unregistered after the main driver's .remove is executed. If it asserts a reset, the subdrivers will be unable to communicate with the hardware during their cleanup. For LEDs, this means that they will fail to turn off, resulting in a timeout error.
[1] https://lore.kernel.org/r/20240123215606.26716-9-luizluca@gmail.com/
Signed-off-by: Luiz Angelo Daros de Luca luizluca@gmail.com Reviewed-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/realtek/rtl83xx.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index d2e876805393b..a9c1702431efb 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -290,16 +290,13 @@ EXPORT_SYMBOL_NS_GPL(rtl83xx_shutdown, REALTEK_DSA); * rtl83xx_remove() - Cleanup a realtek switch driver * @priv: realtek_priv pointer * - * If a method is provided, this function asserts the hard reset of the switch - * in order to avoid leaking traffic when the driver is gone. + * Placehold for common cleanup procedures. * - * Context: Might sleep if priv->gdev->chip->can_sleep. + * Context: Any * Return: nothing */ void rtl83xx_remove(struct realtek_priv *priv) { - /* leave the device reset asserted */ - rtl83xx_reset_assert(priv); } EXPORT_SYMBOL_NS_GPL(rtl83xx_remove, REALTEK_DSA);