Clang static analyzer complains that value stored to 'ret' is never read.
Add an error code check and print an error message if 'readl_poll_timeout'
failed.
Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
---
drivers/soundwire/amd_manager.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/soundwire/amd_manager.c b/drivers/soundwire/amd_manager.c
index 3a99f6dcdfaf..f391b541f4b7 100644
--- a/drivers/soundwire/amd_manager.c
+++ b/drivers/soundwire/amd_manager.c
@@ -1029,6 +1029,10 @@ static int amd_sdw_clock_stop_exit(struct amd_sdw_manager *amd_manager)
ret = readl_poll_timeout(amd_manager->mmio + ACP_SW_CLK_RESUME_CTRL, val,
(val & AMD_SDW_CLK_RESUME_DONE), ACP_DELAY_US,
AMD_SDW_TIMEOUT);
+ if (ret)
+ dev_err(amd_manager->dev, "%s: timed out: %pe\n", __func__,
+ ERR_PTR(ret));
+
if (val & AMD_SDW_CLK_RESUME_DONE) {
writel(0, amd_manager->mmio + ACP_SW_CLK_RESUME_CTRL);
ret = sdw_bus_exit_clk_stop(&amd_manager->bus);
--
2.30.2
