wait_for_completion_timeout() returns the remaining jiffies (at least 1) on success or 0 on timeout, but never negative error codes. The current code incorrectly checks for negative values, causing timeouts to be ignored and treated as success.

Check for a zero return value to correctly identify and handle timeout events.

Fixes: 0cf7befa3ea2 ("greybus: gb-beagleplay: Add firmware upload API") Signed-off-by: Haotian Zhang vulab@iscas.ac.cn --- drivers/greybus/gb-beagleplay.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/greybus/gb-beagleplay.c b/drivers/greybus/gb-beagleplay.c index 9610f878da1b..87186f891a6a 100644 --- a/drivers/greybus/gb-beagleplay.c +++ b/drivers/greybus/gb-beagleplay.c @@ -644,8 +644,8 @@ static int cc1352_bootloader_wait_for_ack(struct gb_beagleplay *bg)

ret = wait_for_completion_timeout( &bg->fwl_ack_com, msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); - if (ret < 0) - return dev_err_probe(&bg->sd->dev, ret, + if (!ret) + return dev_err_probe(&bg->sd->dev, -ETIMEDOUT, "Failed to acquire ack semaphore");

switch (READ_ONCE(bg->fwl_ack)) { @@ -683,8 +683,8 @@ static int cc1352_bootloader_get_status(struct gb_beagleplay *bg) ret = wait_for_completion_timeout( &bg->fwl_cmd_response_com, msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); - if (ret < 0) - return dev_err_probe(&bg->sd->dev, ret, + if (!ret) + return dev_err_probe(&bg->sd->dev, -ETIMEDOUT, "Failed to acquire last status semaphore");

switch (READ_ONCE(bg->fwl_cmd_response)) { @@ -768,8 +768,8 @@ static int cc1352_bootloader_crc32(struct gb_beagleplay *bg, u32 *crc32) ret = wait_for_completion_timeout( &bg->fwl_cmd_response_com, msecs_to_jiffies(CC1352_BOOTLOADER_TIMEOUT)); - if (ret < 0) - return dev_err_probe(&bg->sd->dev, ret, + if (!ret) + return dev_err_probe(&bg->sd->dev, -ETIMEDOUT, "Failed to acquire last status semaphore");

*crc32 = READ_ONCE(bg->fwl_cmd_response);