6.15-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hansg@kernel.org
[ Upstream commit 880af854d6343b796f05b9a8b52b68a88535625b ]
mei_vsc_hw_reset() gets called from mei_start() and mei_stop() in the latter case we do not need to re-init the VSC by calling vsc_tp_init().
mei_stop() only happens on shutdown and driver unbind. On shutdown we don't need to load + boot the firmware and if the driver later is bound to the device again then mei_start() will do another reset.
The intr_enable flag is true when called from mei_start() and false on mei_stop(). Skip vsc_tp_init() when intr_enable is false.
This avoids unnecessarily uploading the firmware, which takes 11 seconds. This change reduces the poweroff/reboot time by 11 seconds.
Fixes: 386a766c4169 ("mei: Add MEI hardware support for IVSC device") Signed-off-by: Hans de Goede hansg@kernel.org Reviewed-by: Alexander Usyskin alexander.usyskin@intel.com Link: https://lore.kernel.org/r/20250623085052.12347-3-hansg@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/mei/platform-vsc.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/misc/mei/platform-vsc.c b/drivers/misc/mei/platform-vsc.c index 435760b1e86f..1ac85f0251c5 100644 --- a/drivers/misc/mei/platform-vsc.c +++ b/drivers/misc/mei/platform-vsc.c @@ -256,6 +256,9 @@ static int mei_vsc_hw_reset(struct mei_device *mei_dev, bool intr_enable)
vsc_tp_reset(hw->tp);
+ if (!intr_enable) + return 0; + return vsc_tp_init(hw->tp, mei_dev->dev); }