Re: [PATCH] wifi: ath12k: release QMI handle on late init failures

[Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>]

On 7/8/2026 3:39 PM, Guangshuo Li wrote:
> The change referenced by the Fixes tag makes hardware group creation
> skip the device whose ath12k_core_soc_create() failed, and only destroys
> devices that were created successfully before it.
> 
> That avoids releasing an uninitialized QMI handle when qmi_handle_init()
> fails, but it also means that ath12k_qmi_init_service() must clean up any
> resources it has already acquired before returning an error.
> 
> qmi_handle_init() can succeed before later initialization steps fail. If
> the QMI event workqueue allocation fails, or qmi_add_lookup() fails, the
> function returns an error without releasing the already initialized QMI
> handle. Since the failed device is now skipped by the hardware group
> rollback path, that handle is leaked.
> 
> Release the QMI handle on those late failure paths and clear ab->qmi.ab
> so the failed device is left in the same state as the qmi_handle_init()
> failure path.
> 
> Fixes: 088a099690e4 ("wifi: ath12k: fix error handling in creating hardware group")
> Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>

Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>

btw, similar leak may be there in ath11k also, care to fix that as well?