From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Al Cooper <alcooperx@gmail.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH 5.4 33/47] mmc: core: Disable card detect during shutdown
Date: Mon, 27 Dec 2021 16:31:09 +0100 [thread overview]
Message-ID: <20211227151321.934865917@linuxfoundation.org> (raw)
In-Reply-To: <20211227151320.801714429@linuxfoundation.org>
From: Ulf Hansson <ulf.hansson@linaro.org>
commit 66c915d09b942fb3b2b0cb2f56562180901fba17 upstream.
It's seems prone to problems by allowing card detect and its corresponding
mmc_rescan() work to run, during platform shutdown. For example, we may end
up turning off the power while initializing a card, which potentially could
damage it.
To avoid this scenario, let's add ->shutdown_pre() callback for the mmc host
class device and then turn of the card detect from there.
Reported-by: Al Cooper <alcooperx@gmail.com>
Suggested-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211203141555.105351-1-ulf.hansson@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mmc/core/core.c | 7 ++++++-
drivers/mmc/core/core.h | 1 +
drivers/mmc/core/host.c | 9 +++++++++
3 files changed, 16 insertions(+), 1 deletion(-)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2364,7 +2364,7 @@ void mmc_start_host(struct mmc_host *hos
_mmc_detect_change(host, 0, false);
}
-void mmc_stop_host(struct mmc_host *host)
+void __mmc_stop_host(struct mmc_host *host)
{
if (host->slot.cd_irq >= 0) {
mmc_gpio_set_cd_wake(host, false);
@@ -2373,6 +2373,11 @@ void mmc_stop_host(struct mmc_host *host
host->rescan_disable = 1;
cancel_delayed_work_sync(&host->detect);
+}
+
+void mmc_stop_host(struct mmc_host *host)
+{
+ __mmc_stop_host(host);
/* clear pm flags now and let card drivers set them as needed */
host->pm_flags = 0;
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -69,6 +69,7 @@ static inline void mmc_delay(unsigned in
void mmc_rescan(struct work_struct *work);
void mmc_start_host(struct mmc_host *host);
+void __mmc_stop_host(struct mmc_host *host);
void mmc_stop_host(struct mmc_host *host);
void _mmc_detect_change(struct mmc_host *host, unsigned long delay,
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -76,9 +76,18 @@ static void mmc_host_classdev_release(st
kfree(host);
}
+static int mmc_host_classdev_shutdown(struct device *dev)
+{
+ struct mmc_host *host = cls_dev_to_mmc_host(dev);
+
+ __mmc_stop_host(host);
+ return 0;
+}
+
static struct class mmc_host_class = {
.name = "mmc_host",
.dev_release = mmc_host_classdev_release,
+ .shutdown_pre = mmc_host_classdev_shutdown,
.pm = MMC_HOST_CLASS_DEV_PM_OPS,
};
next prev parent reply other threads:[~2021-12-27 15:35 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-27 15:30 [PATCH 5.4 00/47] 5.4.169-rc1 review Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 01/47] net: usb: lan78xx: add Allied Telesis AT29M2-AF Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 02/47] serial: 8250_fintek: Fix garbled text for console Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 03/47] HID: holtek: fix mouse probing Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 04/47] arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 05/47] spi: change clk_disable_unprepare to clk_unprepare Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 06/47] IB/qib: Fix memory leak in qib_user_sdma_queue_pkts() Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 07/47] netfilter: fix regression in looped (broad|multi)casts MAC handling Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 08/47] qlcnic: potential dereference null pointer of rx_queue->page_ring Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 09/47] net: accept UFOv6 packages in virtio_net_hdr_to_skb Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 10/47] net: skip virtio_net_hdr_set_proto if protocol already set Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 11/47] ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 12/47] bonding: fix ad_actor_system option setting to default Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 13/47] fjes: Check for error irq Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 14/47] drivers: net: smc911x: " Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 15/47] sfc: falcon: Check null pointer of rx_queue->page_ring Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 16/47] Input: elantech - fix stack out of bound access in elantech_change_report_id() Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 17/47] hwmon: (lm90) Fix usage of CONFIG2 register in detect function Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 18/47] hwmon: (lm90) Add max6654 support to lm90 driver Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 19/47] hwmon: (lm90) Add basic support for TI TMP461 Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 20/47] hwmon: (lm90) Introduce flag indicating extended temperature support Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 21/47] hwmon: (lm90) Drop critical attribute support for MAX6654 Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 22/47] ALSA: jack: Check the return value of kstrdup() Greg Kroah-Hartman
2021-12-27 15:30 ` [PATCH 5.4 23/47] ALSA: drivers: opl3: Fix incorrect use of vp->state Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 24/47] ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6 Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 25/47] Input: atmel_mxt_ts - fix double free in mxt_read_info_block Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 26/47] ipmi: bail out if init_srcu_struct fails Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 27/47] ipmi: ssif: initialize ssif_info->client early Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 28/47] ipmi: fix initialization when workqueue allocation fails Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 29/47] parisc: Correct completer in lws start Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 30/47] x86/pkey: Fix undefined behaviour with PKRU_WD_BIT Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 31/47] pinctrl: stm32: consider the GPIO offset to expose all the GPIO lines Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 32/47] mmc: sdhci-tegra: Fix switch to HS400ES mode Greg Kroah-Hartman
2021-12-27 15:31 ` Greg Kroah-Hartman [this message]
2021-12-27 15:31 ` [PATCH 5.4 34/47] ARM: 9169/1: entry: fix Thumb2 bug in iWMMXt exception handling Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 35/47] tee: optee: Fix incorrect page free bug Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 36/47] f2fs: fix to do sanity check on last xattr entry in __f2fs_setxattr() Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 37/47] usb: gadget: u_ether: fix race in setting MAC address in setup phase Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 38/47] KVM: VMX: Fix stale docs for kvm-intel.emulate_invalid_guest_state Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 39/47] mm: mempolicy: fix THP allocations escaping mempolicy restrictions Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 40/47] Input: i8042 - enable deferred probe quirk for ASUS UM325UA Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 41/47] pinctrl: mediatek: fix global-out-of-bounds issue Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 42/47] hwmom: (lm90) Fix citical alarm status for MAX6680/MAX6681 Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 43/47] hwmon: (lm90) Do not report busy status bit as alarm Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 44/47] ax25: NPD bug when detaching AX25 device Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 45/47] hamradio: defer ax25 kfree after unregister_netdev Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 46/47] hamradio: improve the incomplete fix to avoid NPD Greg Kroah-Hartman
2021-12-27 15:31 ` [PATCH 5.4 47/47] phonet/pep: refuse to enable an unbound pipe Greg Kroah-Hartman
2021-12-27 17:43 ` [PATCH 5.4 00/47] 5.4.169-rc1 review Florian Fainelli
2021-12-28 0:56 ` Samuel Zou
2021-12-28 10:21 ` Naresh Kamboju
2021-12-28 13:20 ` Sudip Mukherjee
2021-12-28 17:07 ` Guenter Roeck
2021-12-28 21:28 ` Shuah Khan
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