[PATCH 2/2] wifi: ath12k: Flush the posted write after writing to PCIE_SOC_GLOBAL_RESET

[Baochen Qiang]

On 6/23/2026 10:16 PM, Manivannan Sadhasivam wrote:
> ath12k_pci_soc_global_reset() tries to reset the device by writing to the
> PCIE_SOC_GLOBAL_RESET register. But it doesn't do a read-back to ensure
> that the write gets flushed to the device before the delay.
> 
> This may lead to the delay on the host to be insufficient, if the posted
> write doesn't reach the device before the delay.
> 
> So add a read-back after writing to the PCIE_SOC_GLOBAL_RESET register and
> before the delay.
> 
> Compile tested only.
> 
> Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
> Reported-by: Alex Williamson <alex at shazbot.org>
> Closes: https://lore.kernel.org/linux-pci/20260622160822.09350246@shazbot.org
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam at oss.qualcomm.com>

Reviewed-by: Baochen Qiang <baochen.qiang at oss.qualcomm.com>