This is a note to let you know that I've just added the patch titled mmc: sdhci-pci-o2micro: fix card detect fail issue caused by CD# debounce timeout to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mmc-sdhci-pci-o2micro-fix-card-detect-fail-issue-caused-by-cd-debounce-timeout.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 096cc0cddf58232bded309336961784f1d1c85f8 Mon Sep 17 00:00:00 2001 From: Chevron Li <chevron.li@xxxxxxxxxxxxxx> Date: Fri, 4 Nov 2022 02:55:12 -0700 Subject: mmc: sdhci-pci-o2micro: fix card detect fail issue caused by CD# debounce timeout From: Chevron Li <chevron.li@xxxxxxxxxxxxxx> commit 096cc0cddf58232bded309336961784f1d1c85f8 upstream. The SD card is recognized failed sometimes when resume from suspend. Because CD# debounce time too long then card present report wrong. Finally, card is recognized failed. Signed-off-by: Chevron Li <chevron.li@xxxxxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20221104095512.4068-1-chevron.li@xxxxxxxxxxxxxx Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mmc/host/sdhci-pci-o2micro.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/mmc/host/sdhci-pci-o2micro.c +++ b/drivers/mmc/host/sdhci-pci-o2micro.c @@ -31,6 +31,7 @@ #define O2_SD_CAPS 0xE0 #define O2_SD_ADMA1 0xE2 #define O2_SD_ADMA2 0xE7 +#define O2_SD_MISC_CTRL2 0xF0 #define O2_SD_INF_MOD 0xF1 #define O2_SD_MISC_CTRL4 0xFC #define O2_SD_TUNING_CTRL 0x300 @@ -777,6 +778,12 @@ int sdhci_pci_o2_probe(struct sdhci_pci_ /* Set Tuning Windows to 5 */ pci_write_config_byte(chip->pdev, O2_SD_TUNING_CTRL, 0x55); + //Adjust 1st and 2nd CD debounce time + pci_read_config_dword(chip->pdev, O2_SD_MISC_CTRL2, &scratch_32); + scratch_32 &= 0xFFE7FFFF; + scratch_32 |= 0x00180000; + pci_write_config_dword(chip->pdev, O2_SD_MISC_CTRL2, scratch_32); + pci_write_config_dword(chip->pdev, O2_SD_DETECT_SETTING, 1); /* Lock WP */ ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch); Patches currently in stable-queue which might be from chevron.li@xxxxxxxxxxxxxx are queue-5.4/mmc-sdhci-pci-o2micro-fix-card-detect-fail-issue-caused-by-cd-debounce-timeout.patch