The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

Possible dependencies:

222cfa0118aa ("mmc: sdhci-pci: Fix possible memory leak caused by missing pci_dev_put()") c31165d7400b ("mmc: sdhci-pci: Add support for HS200 tuning mode on AMD, eMMC-4.5.1")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 222cfa0118aa68687ace74aab8fdf77ce8fbd7e6 Mon Sep 17 00:00:00 2001 From: Xiongfeng Wang wangxiongfeng2@huawei.com Date: Mon, 14 Nov 2022 16:31:00 +0800 Subject: [PATCH] mmc: sdhci-pci: Fix possible memory leak caused by missing pci_dev_put()

pci_get_device() will increase the reference count for the returned pci_dev. We need to use pci_dev_put() to decrease the reference count before amd_probe() returns. There is no problem for the 'smbus_dev == NULL' branch because pci_dev_put() can also handle the NULL input parameter case.

Fixes: 659c9bc114a8 ("mmc: sdhci-pci: Build o2micro support in the same module") Signed-off-by: Xiongfeng Wang wangxiongfeng2@huawei.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20221114083100.149200-1-wangxiongfeng2@huawei.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org

diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index 34ea1acbb3cc..28dc65023fa9 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -1749,6 +1749,8 @@ static int amd_probe(struct sdhci_pci_chip *chip) } }

+ pci_dev_put(smbus_dev); + if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ) chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;