linux-kernel - [PATCH v3 2/2] mei: bus-fixup: change pxp mode only if message was sent

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Message-Id: <20221116124735.2493847-3-alexander.usyskin@intel.com>
Date:   Wed, 16 Nov 2022 14:47:35 +0200
From:   Alexander Usyskin <alexander.usyskin@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...hat.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>
Cc:     Tomas Winkler <tomas.winkler@...el.com>,
        Alexander Usyskin <alexander.usyskin@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/2] mei: bus-fixup: change pxp mode only if message was sent

Move PXP mode state machine to SETUP mode only if
memory ready message sent successfully to the firmware.
Leave it in INIT mode otherwise to allow try to send message later.

Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>
---
 drivers/misc/mei/bus-fixup.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 90023c34666e..6df7679d9739 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -266,12 +266,13 @@ static void mei_gsc_mkhi_fix_ver(struct mei_cl_device *cldev)
 
 	if (cldev->bus->pxp_mode == MEI_DEV_PXP_INIT) {
 		ret = mei_gfx_memory_ready(cldev);
-		if (ret < 0)
+		if (ret < 0) {
 			dev_err(&cldev->dev, "memory ready command failed %d\n", ret);
-		else
+		} else {
 			dev_dbg(&cldev->dev, "memory ready command sent\n");
+			cldev->bus->pxp_mode = MEI_DEV_PXP_SETUP;
+		}
 		/* we go to reset after that */
-		cldev->bus->pxp_mode = MEI_DEV_PXP_SETUP;
 		goto out;
 	}
 
-- 
2.34.1