6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Lin <yu-hao.lin@xxxxxxx> commit 1c5d463c0770c6fa2037511a24fb17966fd07d97 upstream. For SDIO IW416, due to a bug, FW may return ready before complete full initialization. Command timeout may occur at driver load after reboot. Workaround by adding 100ms delay at checking FW status. Signed-off-by: David Lin <yu-hao.lin@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Reviewed-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> Acked-by: Brian Norris <briannorris@xxxxxxxxxxxx> Tested-by: Marcel Ziswiler <marcel.ziswiler@xxxxxxxxxxx> # Verdin AM62 (IW416) Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx> Link: https://msgid.link/20231208234029.2197-1-yu-hao.lin@xxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/marvell/mwifiex/sdio.c | 19 +++++++++++++++++++ drivers/net/wireless/marvell/mwifiex/sdio.h | 2 ++ 2 files changed, 21 insertions(+) --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -331,6 +331,7 @@ static const struct mwifiex_sdio_device .can_dump_fw = false, .can_auto_tdls = false, .can_ext_scan = false, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8787 = { @@ -346,6 +347,7 @@ static const struct mwifiex_sdio_device .can_dump_fw = false, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8797 = { @@ -361,6 +363,7 @@ static const struct mwifiex_sdio_device .can_dump_fw = false, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = { @@ -376,6 +379,7 @@ static const struct mwifiex_sdio_device .can_dump_fw = true, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8977 = { @@ -392,6 +396,7 @@ static const struct mwifiex_sdio_device .fw_dump_enh = true, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8978 = { @@ -408,6 +413,7 @@ static const struct mwifiex_sdio_device .fw_dump_enh = true, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = true, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8997 = { @@ -425,6 +431,7 @@ static const struct mwifiex_sdio_device .fw_dump_enh = true, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8887 = { @@ -440,6 +447,7 @@ static const struct mwifiex_sdio_device .can_dump_fw = false, .can_auto_tdls = true, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8987 = { @@ -456,6 +464,7 @@ static const struct mwifiex_sdio_device .fw_dump_enh = true, .can_auto_tdls = true, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static const struct mwifiex_sdio_device mwifiex_sdio_sd8801 = { @@ -471,6 +480,7 @@ static const struct mwifiex_sdio_device .can_dump_fw = false, .can_auto_tdls = false, .can_ext_scan = true, + .fw_ready_extra_delay = false, }; static struct memory_type_mapping generic_mem_type_map[] = { @@ -563,6 +573,7 @@ mwifiex_sdio_probe(struct sdio_func *fun card->fw_dump_enh = data->fw_dump_enh; card->can_auto_tdls = data->can_auto_tdls; card->can_ext_scan = data->can_ext_scan; + card->fw_ready_extra_delay = data->fw_ready_extra_delay; INIT_WORK(&card->work, mwifiex_sdio_work); } @@ -766,6 +777,7 @@ mwifiex_sdio_read_fw_status(struct mwifi static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, u32 poll_num) { + struct sdio_mmc_card *card = adapter->card; int ret = 0; u16 firmware_stat; u32 tries; @@ -783,6 +795,13 @@ static int mwifiex_check_fw_status(struc ret = -1; } + if (card->fw_ready_extra_delay && + firmware_stat == FIRMWARE_READY_SDIO) + /* firmware might pretend to be ready, when it's not. + * Wait a little bit more as a workaround. + */ + msleep(100); + return ret; } --- a/drivers/net/wireless/marvell/mwifiex/sdio.h +++ b/drivers/net/wireless/marvell/mwifiex/sdio.h @@ -258,6 +258,7 @@ struct sdio_mmc_card { bool fw_dump_enh; bool can_auto_tdls; bool can_ext_scan; + bool fw_ready_extra_delay; struct mwifiex_sdio_mpa_tx mpa_tx; struct mwifiex_sdio_mpa_rx mpa_rx; @@ -281,6 +282,7 @@ struct mwifiex_sdio_device { bool fw_dump_enh; bool can_auto_tdls; bool can_ext_scan; + bool fw_ready_extra_delay; }; /*
