From: Akshay Gupta Date: Wed, 18 Mar 2026 11:27:10 +0000 (+0530) Subject: misc: amd-sbi: Add check to probe only SBRMI devices X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82e1288701c0b746397f2a133b1f93d3d48eee23;p=thirdparty%2Fkernel%2Flinux.git misc: amd-sbi: Add check to probe only SBRMI devices AMD OOB devices are differentiated by their Instance ID, with SBRMI assigned Instance ID 1. Since the device ID match does not consider the Instance ID, add an explicit check to restrict probing to only the SBRMI device and exclude other OOB devices. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://patch.msgid.link/20260318112711.2757467-2-Akshay.Gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/misc/amd-sbi/rmi-i2c.c b/drivers/misc/amd-sbi/rmi-i2c.c index f0cc99000b69..04182358bebb 100644 --- a/drivers/misc/amd-sbi/rmi-i2c.c +++ b/drivers/misc/amd-sbi/rmi-i2c.c @@ -170,6 +170,16 @@ static int sbrmi_i3c_probe(struct i3c_device *i3cdev) struct regmap *regmap; int rev, ret; + /* + * AMD OOB devices are distinguished by their Instance ID. + * For SBRMI, the Instance ID is 1. Since the device ID match + * does not account for the Instance ID, the following check + * ensures that only the SBRMI device is probed, excluding + * other OOB devices. + */ + if (I3C_PID_INSTANCE_ID(i3cdev->desc->info.pid) != 1) + return -ENXIO; + regmap = devm_regmap_init_i3c(i3cdev, &sbrmi_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap);