6.15-stable review patch. If anyone has any objections, please let me know.
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From: Rodrigo Gobbi rodrigo.gobbi.7@gmail.com
[ Upstream commit 06f77ff9d852c9f2764659ea81489364d8a69a9c ]
The start_t and finish_t variables are not properly initialized if errors happens over request_firmware actions. This was also detected by smatch:
drivers/soundwire/debugfs.c:301 cmd_go() error: uninitialized symbol 'finish_t'. drivers/soundwire/debugfs.c:301 cmd_go() error: uninitialized symbol 'start_t'.
Move the debug statement outside of firmware error handling.
Signed-off-by: Rodrigo Gobbi rodrigo.gobbi.7@gmail.com Reported-by: Dan Carpenter dan.carpenter@linaro.org Closes: https://lore.kernel.org/linux-sound/0db6d0bf-7bac-43a7-b624-a00d3d2bf829@sta... Fixes: bb5cb09eedce ("soundwire: debugfs: add interface for BPT/BRA transfers") Link: https://lore.kernel.org/r/20250626213628.9575-1-rodrigo.gobbi.7@gmail.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/soundwire/debugfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/soundwire/debugfs.c b/drivers/soundwire/debugfs.c index 3099ea074f10..230a51489486 100644 --- a/drivers/soundwire/debugfs.c +++ b/drivers/soundwire/debugfs.c @@ -291,6 +291,9 @@ static int cmd_go(void *data, u64 value)
finish_t = ktime_get();
+ dev_dbg(&slave->dev, "command completed, num_byte %zu status %d, time %lld ms\n", + num_bytes, ret, div_u64(finish_t - start_t, NSEC_PER_MSEC)); + out: if (fw) release_firmware(fw); @@ -298,9 +301,6 @@ static int cmd_go(void *data, u64 value) pm_runtime_mark_last_busy(&slave->dev); pm_runtime_put(&slave->dev);
- dev_dbg(&slave->dev, "command completed, num_byte %zu status %d, time %lld ms\n", - num_bytes, ret, div_u64(finish_t - start_t, NSEC_PER_MSEC)); - return ret; } DEFINE_DEBUGFS_ATTRIBUTE(cmd_go_fops, NULL,