From: Chevron Li <chevron.li@bayhubtech.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: shaper.liu@bayhubtech.com, chevron.li@bayhubtech.com,
xiaoguang.yu@bayhubtech.com, shirley.her@bayhubtech.com,
fred.ai@bayhubtech.com
Subject: [PATCH V1 1/1] mmc:sdhci-pci-o2micro:fix card detect issue because card detect debouncing isn't done
Date: Thu, 2 Jun 2022 06:25:43 -0700 [thread overview]
Message-ID: <20220602132543.596-1-chevron.li@bayhubtech.com> (raw)
get_cd result is uncorrect during card detect debouncing
we need to wait card detect stable before return get_cd result
Signed-off-by: Chevron Li<chevron.li@bayhubtech.com>
---
change in V1:
add wait card detect stable logical before return card detect result.
---
drivers/mmc/host/sdhci-pci-o2micro.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c
index 92c20cb8074a..0d4d343dbb77 100644
--- a/drivers/mmc/host/sdhci-pci-o2micro.c
+++ b/drivers/mmc/host/sdhci-pci-o2micro.c
@@ -152,6 +152,8 @@ static int sdhci_o2_get_cd(struct mmc_host *mmc)
if (!(sdhci_readw(host, O2_PLL_DLL_WDT_CONTROL1) & O2_PLL_LOCK_STATUS))
sdhci_o2_enable_internal_clock(host);
+ else
+ sdhci_o2_wait_card_detect_stable(host);
return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
}
base-commit: d1dc87763f406d4e67caf16dbe438a5647692395
--
2.32.0
next reply other threads:[~2022-06-02 13:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 13:25 Chevron Li [this message]
2022-06-07 10:43 ` [PATCH V1 1/1] mmc:sdhci-pci-o2micro:fix card detect issue because card detect debouncing isn't done Ulf Hansson
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