6.1-stable review patch. If anyone has any objections, please let me know.
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From: Jay Buddhabhatti jay.buddhabhatti@amd.com
commit 9b003e14801cf85a8cebeddc87bc9fc77100fdce upstream.
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.
Fixes: b9b3a8be28b3 ("firmware: xilinx: Remove eemi ops for get_api_version") Signed-off-by: Jay Buddhabhatti jay.buddhabhatti@amd.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240515112345.24673-1-jay.buddhabhatti@amd.com Signed-off-by: Michal Simek michal.simek@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/soc/xilinx/zynqmp_power.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/soc/xilinx/zynqmp_power.c +++ b/drivers/soc/xilinx/zynqmp_power.c @@ -187,7 +187,9 @@ static int zynqmp_pm_probe(struct platfo u32 pm_api_version; 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)