mmc: sdhci-pci: Remove dead code (cd_gpio, cd_irq et al)

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2144641

commit 67f7296
Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Thu, 14 Oct 2021 16:26:12 +0300

    The last user of this struct gone couple of releases ago.
    Remove the dead code for good and encourage people to use
    MMC core functionality for that.

    The removal is dependent on the previous removal of the
    struct sdhci_pci_data.

    Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    Acked-by: Adrian Hunter <adrian.hunter@intel.com>
    Link: https://lore.kernel.org/r/20211014132613.27861-5-andriy.shevchenko@linux.intel.com
    Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Signed-off-by: Mark Salter <msalter@redhat.com>

Author: mosalter

drivers/mmc/host/sdhci-pci-core.c

@@ -345,73 +345,6 @@ static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-
-static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
-{
-	struct sdhci_pci_slot *slot = dev_id;
-	struct sdhci_host *host = slot->host;
-
-	mmc_detect_change(host->mmc, msecs_to_jiffies(200));
-	return IRQ_HANDLED;
-}
-
-static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
-{
-	int err, irq, gpio = slot->cd_gpio;
-
-	slot->cd_gpio = -EINVAL;
-	slot->cd_irq = -EINVAL;
-
-	if (!gpio_is_valid(gpio))
-		return;
-
-	err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
-	if (err < 0)
-		goto out;
-
-	err = gpio_direction_input(gpio);
-	if (err < 0)
-		goto out_free;
-
-	irq = gpio_to_irq(gpio);
-	if (irq < 0)
-		goto out_free;
-
-	err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
-			  IRQF_TRIGGER_FALLING, "sd_cd", slot);
-	if (err)
-		goto out_free;
-
-	slot->cd_gpio = gpio;
-	slot->cd_irq = irq;
-
-	return;
-
-out_free:
-	devm_gpio_free(&slot->chip->pdev->dev, gpio);
-out:
-	dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
-}
-
-static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
-{
-	if (slot->cd_irq >= 0)
-		free_irq(slot->cd_irq, slot);
-}
-
-#else
-
-static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
-{
-}
-
-static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
-{
-}
-
-#endif
-
 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
 {
 	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
@@ -2123,7 +2056,6 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
 	slot->chip = chip;
 	slot->host = host;
 	slot->rst_n_gpio = -EINVAL;
-	slot->cd_gpio = -EINVAL;
 	slot->cd_idx = -1;
 
 	host->hw_name = "PCI";
@@ -2194,15 +2126,11 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
 	if (ret)
 		goto remove;
 
-	sdhci_pci_add_own_cd(slot);
-
 	/*
 	 * Check if the chip needs a separate GPIO for card detect to wake up
 	 * from runtime suspend.  If it is not there, don't allow runtime PM.
-	 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
 	 */
-	if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
-	    !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
+	if (chip->fixes && chip->fixes->own_cd_for_runtime_pm && slot->cd_idx < 0)
 		chip->allow_runtime_pm = false;
 
 	return slot;
@@ -2222,8 +2150,6 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
 	int dead;
 	u32 scratch;
 
-	sdhci_pci_remove_own_cd(slot);
-
 	dead = 0;
 	scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
 	if (scratch == (u32)-1)

drivers/mmc/host/sdhci-pci.h

@@ -158,8 +158,6 @@ struct sdhci_pci_slot {
 	struct sdhci_host	*host;
 
 	int			rst_n_gpio;
-	int			cd_gpio;
-	int			cd_irq;
 
 	int			cd_idx;
 	bool			cd_override_level;