From: Ronak Jain Date: Fri, 20 Sep 2024 05:54:10 +0000 (-0700) Subject: firmware: xilinx: add a warning print for unsupported feature X-Git-Tag: v6.13-rc1~139^2~13^2~2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8415a8aecdb73cadfcfd1f1e1307d84413a5eb8;p=thirdparty%2Flinux.git firmware: xilinx: add a warning print for unsupported feature As per the current code base, feature check API is used to check the version in zynqmp_pm_pinctrl_set_config() before requesting the firmware, and if the expected version is not found then it will return an error. So now when the latest kernel tries to access the tri-state functionality with older firmware, observe failure prints during booting. The failure prints, [ 1.204850] zynqmp-pinctrl firmware:zynqmp-firmware:pinctrl: failed to set: pin 37 param 2 value 0 [ 2.699455] zynqmp-pinctrl firmware:zynqmp-firmware:pinctrl: failed to set: pin 44 param 2 value 0 [ 2.708424] zynqmp-pinctrl firmware:zynqmp-firmware:pinctrl: failed to set: pin 46 param 2 value 0 [ 2.717387] zynqmp-pinctrl firmware:zynqmp-firmware:pinctrl: failed to set: pin 48 param 2 value 0 Now, these error prints mislead the user whether it is an actual failure or the feature itself is not there in the firmware. So, just to avoid confusion around this, add some debug prints before returning an error code. With that, it is easier to know whether it is an actual failure or the feature is unsupported. Signed-off-by: Ronak Jain Link: https://lore.kernel.org/r/20240920055410.2658465-1-ronak.jain@amd.com Signed-off-by: Michal Simek --- diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index c8be32d9c6af0..920aba92feeea 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -1118,8 +1118,11 @@ int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param, if (pm_family_code == ZYNQMP_FAMILY_CODE && param == PM_PINCTRL_CONFIG_TRI_STATE) { ret = zynqmp_pm_feature(PM_PINCTRL_CONFIG_PARAM_SET); - if (ret < PM_PINCTRL_PARAM_SET_VERSION) + if (ret < PM_PINCTRL_PARAM_SET_VERSION) { + pr_warn("The requested pinctrl feature is not supported in the current firmware.\n" + "Expected firmware version is 2023.1 and above for this feature to work.\r\n"); return -EOPNOTSUPP; + } } return zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_SET, NULL, 3, pin, param, value);