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Message-ID: <20250716110729.2193725-3-akshay.gupta@amd.com> Date: Wed, 16 Jul 2025 11:07:29 +0000 From: Akshay Gupta <akshay.gupta@....com> To: <linux-kernel@...r.kernel.org> CC: <gregkh@...uxfoundation.org>, <arnd@...db.de>, <Anand.Umarji@....com>, Akshay Gupta <akshay.gupta@....com>, Naveen Krishna Chatradhi <naveenkrishna.chatradhi@....com> Subject: [PATCH v5 3/3] misc: amd-sbi: Explicitly clear in/out arg "mb_in_out" - New AMD processor will support different input/output for same command. - In some scenarios the input value is not cleared, which will be added to output before reporting the data. - Clearing input explicitly will be a cleaner and safer approach. Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@....com> Signed-off-by: Akshay Gupta <akshay.gupta@....com> --- New patch drivers/misc/amd-sbi/rmi-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 9048517c088c..3dec2fc00124 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -320,6 +320,10 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, ret = regmap_read(data->regmap, SBRMI_OUTBNDMSG7, &ec); if (ret || ec) goto exit_clear_alert; + + /* Clear the input value before updating the output data */ + msg->mb_in_out = 0; + /* * For a read operation, the initiator (BMC) reads the firmware * response Command Data Out[31:0] from SBRMI::OutBndMsg_inst[4:1] -- 2.25.1
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