> From: Brian Norris <briannorris@xxxxxxxxxxxx> > Sent: Wednesday, December 6, 2023 4:27 AM > To: David Lin <yu-hao.lin@xxxxxxx> > Cc: linux-wireless@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > kvalo@xxxxxxxxxx; francesco@xxxxxxxxxx; Pete Hsieh > <tsung-hsien.hsieh@xxxxxxx> > Subject: [EXT] Re: [PATCH] wifi: mwifiex: added extra delay for firmware ready. > > Caution: This is an external email. Please take care when clicking links or > opening attachments. When in doubt, report the message using the 'Report > this email' button > > > On Tue, Nov 28, 2023 at 04:25:44PM +0800, David Lin wrote: > > For SDIO IW416, in a corner case FW may return ready before complete > > full initialization. > > Command timeout may occur at driver load after reboot. > > Do you have any idea why? Is it specific to this chip and/or firmware? > I'm hesitant to add magic sleeps to everything, just because you have one > buggy chip/firmware. > > If it's a known issue with a single chip, it seems like you should add a flag to > struct mwifiex_sdio_device / mwifiex_sdio_sd8978. > This issue is reported by customer We confirmed it's specific to this chip and 100ms is sufficient and relatively safe/easy then change FW. Will add flag to struct mwifiex_sdio_device / mwifiex_sdio_sd8978 > Brian > > > Workaround by adding 100ms delay at checking FW status. > > > > Signed-off-by: David Lin <yu-hao.lin@xxxxxxx>
