FAILED: patch "[PATCH] drivers: soc: xilinx: check return status of" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 9b003e14801cf85a8cebeddc87bc9fc77100fdce
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2024072936-ogle-royal-3339@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

9b003e14801c ("drivers: soc: xilinx: check return status of get_api_version()") 7fd890b89dea ("soc: xilinx: move PM_INIT_FINALIZE to zynqmp_pm_domains driver")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 9b003e14801cf85a8cebeddc87bc9fc77100fdce Mon Sep 17 00:00:00 2001
From: Jay Buddhabhatti <[email protected]>
Date: Wed, 15 May 2024 04:23:45 -0700
Subject: [PATCH] drivers: soc: xilinx: check return status of
get_api_version()

Currently return status is not getting checked for get_api_version and because of that for x86 arch we are getting below smatch error.

CC drivers/soc/xilinx/zynqmp_power.o
drivers/soc/xilinx/zynqmp_power.c: In function 'zynqmp_pm_probe':
drivers/soc/xilinx/zynqmp_power.c:295:12: warning: 'pm_api_version' is used uninitialized [-Wuninitialized]
295 | if (pm_api_version < ZYNQMP_PM_VERSION)
| ^
CHECK drivers/soc/xilinx/zynqmp_power.c
drivers/soc/xilinx/zynqmp_power.c:295 zynqmp_pm_probe() error:
uninitialized symbol 'pm_api_version'.

So, check return status of pm_get_api_version and return error in case of failure to avoid checking uninitialized pm_api_version variable.

index fced6bedca43..411d33f2fb05 100644
@@ -288,7 +288,9 @@ static int zynqmp_pm_probe(struct platform_device *pdev)
 	u32 pm_api_version, pm_family_code, pm_sub_family_code, node_id;
 	struct mbox_client *client;
 
-	zynqmp_pm_get_api_version(&pm_api_version);
+	ret = zynqmp_pm_get_api_version(&pm_api_version);
+	if (ret)
+		return ret;
 
 	/* Check PM API version number */
 	if (pm_api_version < ZYNQMP_PM_VERSION)