From 0dd8316037a2a6d85b2be208bef9991de7b42170 Mon Sep 17 00:00:00 2001
From: Georgii Kruglov <georgy.kruglov@yandex.ru>
Date: Tue, 21 Mar 2023 23:37:15 +0300
Subject: [PATCH] mmc: sdhci-of-esdhc: fix quirk to ignore command inhibit for data
Git-commit: 0dd8316037a2a6d85b2be208bef9991de7b42170
Patch-mainline: v6.4-rc1
References: git-fixes
If spec_reg is equal to 'SDHCI_PRESENT_STATE', esdhc_readl_fixup()
fixes up register value and returns it immediately. As a result, the
further block
(spec_reg == SDHCI_PRESENT_STATE)
&&(esdhc->quirk_ignore_data_inhibit == true),
is never executed.
The patch merges the second block into the first one.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 1f1929f3f2fa ("mmc: sdhci-of-esdhc: add quirk to ignore command inhibit for data")
Signed-off-by: Georgii Kruglov <georgy.kruglov@yandex.ru>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20230321203715.3975-1-georgy.kruglov@yandex.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/mmc/host/sdhci-of-esdhc.c | 24 +++++++++++-------------
1 file changed, 11 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 4712adac7f7c..48ca1cf15b19 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -133,6 +133,7 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
return ret;
}
}
+
/*
* The DAT[3:0] line signal levels and the CMD line signal level are
* not compatible with standard SDHC register. The line signal levels
@@ -144,6 +145,16 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
ret = value & 0x000fffff;
ret |= (value >> 4) & SDHCI_DATA_LVL_MASK;
ret |= (value << 1) & SDHCI_CMD_LVL;
+
+ /*
+ * Some controllers have unreliable Data Line Active
+ * bit for commands with busy signal. This affects
+ * Command Inhibit (data) bit. Just ignore it since
+ * MMC core driver has already polled card status
+ * with CMD13 after any command with busy siganl.
+ */
+ if (esdhc->quirk_ignore_data_inhibit)
+ ret &= ~SDHCI_DATA_INHIBIT;
return ret;
}
@@ -158,19 +169,6 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
return ret;
}
- /*
- * Some controllers have unreliable Data Line Active
- * bit for commands with busy signal. This affects
- * Command Inhibit (data) bit. Just ignore it since
- * MMC core driver has already polled card status
- * with CMD13 after any command with busy siganl.
- */
- if ((spec_reg == SDHCI_PRESENT_STATE) &&
- (esdhc->quirk_ignore_data_inhibit == true)) {
- ret = value & ~SDHCI_DATA_INHIBIT;
- return ret;
- }
-
ret = value;
return ret;
}
--
2.35.3