nvme_get_cmd_id() returns 0 after cmdid reaches USHRT_MAX, but fails to reset cmdid itself. As a result, all subsequent calls keep returning 0 indefinitely.
Reset cmdid when wraparound occurs so command IDs continue incrementing correctly. Signed-off-by: Prashant Kamble <[email protected]> --- drivers/nvme/nvme.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c index 2b14437f69c..4f9473367d3 100644 --- a/drivers/nvme/nvme.c +++ b/drivers/nvme/nvme.c @@ -112,7 +112,10 @@ static __le16 nvme_get_cmd_id(void) { static unsigned short cmdid; - return cpu_to_le16((cmdid < USHRT_MAX) ? cmdid++ : 0); + if (cmdid >= USHRT_MAX) + cmdid = 0; + + return cpu_to_le16(cmdid++); } static u16 nvme_read_completion_status(struct nvme_queue *nvmeq, u16 index) -- 2.43.0
