write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/mmc/core/host.c
..
..
@@ -516,6 +516,32 @@
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 EXPORT_SYMBOL(mmc_alloc_host);
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+static void devm_mmc_host_release(struct device *dev, void *res)
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+{
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+	mmc_free_host(*(struct mmc_host **)res);
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+}
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+
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+struct mmc_host *devm_mmc_alloc_host(struct device *dev, int extra)
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+{
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+	struct mmc_host **dr, *host;
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+
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+	dr = devres_alloc(devm_mmc_host_release, sizeof(*dr), GFP_KERNEL);
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+	if (!dr)
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+		return ERR_PTR(-ENOMEM);
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+
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+	host = mmc_alloc_host(extra, dev);
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+	if (IS_ERR(host)) {
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+		devres_free(dr);
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+		return host;
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+	}
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+
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+	*dr = host;
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+	devres_add(dev, dr);
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+
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+	return host;
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+}
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+EXPORT_SYMBOL(devm_mmc_alloc_host);
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+
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 static int mmc_validate_host_caps(struct mmc_host *host)
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 {
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 	if (host->caps & MMC_CAP_SDIO_IRQ && !host->ops->enable_sdio_irq) {