[Regression: mmc: sdhci-esdhc-imx: add runtime pm support]

Martin Fuzzey
2014-02-06T14:55:39Z

Hello all,

since

commit 89d7e5c131228a8f0d8b0cb48b459c62152bf620
Author: Dong Aisheng <b29396@freescale.com>
Date: Mon Nov 4 16:38:29 2013 +0800

mmc: sdhci-esdhc-imx: add runtime pm support

My SDIO wifi module (WiiBear n modue based on Marvel 8787 chipset) using
mainline mwifiex driver is no longer working:

[ 33.465577] mwifiex_sdio mmc2:0001:1: mwifiex_cmd_timeout_func:
Timeout cmd id (7242618.212205) = 0xa9, act = 0x0
[ 33.475944] mwifiex_sdio mmc2:0001:1: num_data_h2c_failure = 0
[ 33.481793] mwifiex_sdio mmc2:0001:1: num_cmd_h2c_failure = 0
[ 33.487599] mwifiex_sdio mmc2:0001:1: num_cmd_timeout = 1
[ 33.493010] mwifiex_sdio mmc2:0001:1: num_tx_timeout = 0
[ 33.498371] mwifiex_sdio mmc2:0001:1: last_cmd_index = 1
[ 33.503693] mwifiex_sdio mmc2:0001:1: last_cmd_id: 00 00 a9 00 00 00
00 00 00 00
[ 33.511137] mwifiex_sdio mmc2:0001:1: last_cmd_act: 00 00 00 00 00 00
00 00 00 00
[ 33.518660] mwifiex_sdio mmc2:0001:1: last_cmd_resp_index = 0
[ 33.524417] mwifiex_sdio mmc2:0001:1: last_cmd_resp_id: 00 00 00 00
00 00 00 00 00 00
[ 33.532301] mwifiex_sdio mmc2:0001:1: last_event_index = 0
[ 33.537825] mwifiex_sdio mmc2:0001:1: last_event: 00 00 00 00 00 00
00 00 00 00
[ 33.545164] mwifiex_sdio mmc2:0001:1: data_sent=1 cmd_sent=1
[ 33.550863] mwifiex_sdio mmc2:0001:1: ps_mode=0 ps_state=0
[ 33.556425] mwifiex_sdio mmc2:0001:1: cmd timeout
[ 33.572375] mwifiex_sdio: Resetting card...
[ 33.728913] mmc2: card 0001 removed

Increasing the autosuspend delay from 50ms to 500ms fixes the problem.

This is using an i.MX53 SOC

This is on 3.13 cherrypicking from mainline this patch and these two
supporting patches:

commit d433dc63182825538b85de6a85e2ea3fad7f2917
Author: Dong Aisheng <b29396@freescale.com>
Date: Mon Nov 4 16:38:25 2013 +0800

mmc: sdhci-pltfm: export pltfm suspend/resume api

commit ce090a4eb9626272bfd2529520f2f16351029640
Author: Dong Aisheng <b29396@freescale.com>
Date: Mon Nov 4 16:38:28 2013 +0800

mmc: sdhci-esdhc-imx: fix runtime pm unbalance issue

Cheers,

Martin