linux-kernel - [PATCH v3 1/5] mmc: sdhci: Deduplicate sdhci_get_cd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 14 Oct 2021 16:26:09 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Eric Biggers <ebiggers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Raul E Rangel <rrangel@...omium.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: [PATCH v3 1/5] mmc: sdhci: Deduplicate sdhci_get_cd_nogpio()

The analogue of the sdhci_get_cd_nogpio() is used in the sdhci-pci-core
and sdhci-acpi modules. Deduplicate it by moving to sdhci and exporting.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
---
 drivers/mmc/host/sdhci-acpi.c     | 14 +-------------
 drivers/mmc/host/sdhci-pci-core.c | 18 ------------------
 drivers/mmc/host/sdhci.c          | 19 +++++++++++++++++++
 drivers/mmc/host/sdhci.h          |  1 +
 4 files changed, 21 insertions(+), 31 deletions(-)

diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 8fe65f172a61..f1ef0d28b0dd 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -362,23 +362,11 @@ static inline bool sdhci_acpi_no_fixup_child_power(struct acpi_device *adev)
 static int bxt_get_cd(struct mmc_host *mmc)
 {
 	int gpio_cd = mmc_gpio_get_cd(mmc);
-	struct sdhci_host *host = mmc_priv(mmc);
-	unsigned long flags;
-	int ret = 0;
 
 	if (!gpio_cd)
 		return 0;
 
-	spin_lock_irqsave(&host->lock, flags);
-
-	if (host->flags & SDHCI_DEVICE_DEAD)
-		goto out;
-
-	ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
-out:
-	spin_unlock_irqrestore(&host->lock, flags);
-
-	return ret;
+	return sdhci_get_cd_nogpio(mmc);
 }
 
 static int intel_probe_slot(struct platform_device *pdev, struct acpi_device *adev)
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index d0f2edfe296c..19e13dfae593 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -616,24 +616,6 @@ static int intel_select_drive_strength(struct mmc_card *card,
 	return intel_host->drv_strength;
 }
 
-static int sdhci_get_cd_nogpio(struct mmc_host *mmc)
-{
-	struct sdhci_host *host = mmc_priv(mmc);
-	unsigned long flags;
-	int ret = 0;
-
-	spin_lock_irqsave(&host->lock, flags);
-
-	if (host->flags & SDHCI_DEVICE_DEAD)
-		goto out;
-
-	ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
-out:
-	spin_unlock_irqrestore(&host->lock, flags);
-
-	return ret;
-}
-
 static int bxt_get_cd(struct mmc_host *mmc)
 {
 	int gpio_cd = mmc_gpio_get_cd(mmc);
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index dbe87995596c..269c86569402 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2425,6 +2425,25 @@ static int sdhci_get_cd(struct mmc_host *mmc)
 	return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
 }
 
+int sdhci_get_cd_nogpio(struct mmc_host *mmc)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	if (host->flags & SDHCI_DEVICE_DEAD)
+		goto out;
+
+	ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
+out:
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(sdhci_get_cd_nogpio);
+
 static int sdhci_check_ro(struct sdhci_host *host)
 {
 	unsigned long flags;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index e8d04e42a5af..c593af479832 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -775,6 +775,7 @@ void sdhci_set_power_and_bus_voltage(struct sdhci_host *host,
 				     unsigned short vdd);
 void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
 			   unsigned short vdd);
+int sdhci_get_cd_nogpio(struct mmc_host *mmc);
 void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq);
 int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq);
 void sdhci_set_bus_width(struct sdhci_host *host, int width);
-- 
2.33.0